Transforming circuit for commutation of a set of levels of commutated voltage

FIELD: power electronics.

SUBSTANCE: transforming circuit for commutation of a set of levels of commutated voltage contains n first commutation groups provided for each phase (R, S, T). To reduce accumulated electric energy of transforming circuit n≥1, p second commutation groups and p third commutation groups are provided, formed respectively by first semiconductor power switch and second semiconductor power switch and with a capacitor connected to first semiconductor power switch and second semiconductor power switch, while p≥1, and each one of p second commutation groups is connected in parallel to appropriately adjacent second commutation group, each one of p third commutation groups is connected in parallel to appropriately adjacent third commutation group, first second commutation group is connected to first semiconductor power switch of n first commutation group (1.n), and first third commutation group is connected to second semiconductor power switch of n first commutation group (1.n). Capacitor of p second commutation group is serially connected to capacitor of p third commutation group.

EFFECT: increased efficiency.

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The technical field

The invention relates to the field of power electronics and, in particular, to the conversion scheme for switching a switching voltage according to the restrictive part of the independent claims.

The level of technology

The inverter circuits are used today in many applications of power electronics. Requirements for such conversion scheme are, first, to create smaller high harmonic phases are usually connected to Converter the schematic of the AC voltage, and secondly, using as fewer electronic components as large capacity. A suitable Converter circuit for switching a switching voltage is described in DE 69205413 T2. Here for each phase is provided by the n first switching groups, and n-th first switching group is formed by the first and second power semiconductor switches, and the switching group from the first to (n-1)-th formed respectively first and second power semiconductor switches and connected to the first and second power semiconductor switches, capacitor, and n≥2. Each of the n first switching groups are connected in parallel with the respectively adjacent the first commutatio the Noah group, moreover, the first and second power semiconductor switches of the first switching group are connected. The first and second power semiconductor switches respectively formed bipolar transistor (IGBT - Insulated Gate Bipolartransistor) and included a counter-parallel bipolar transistor diode.

The problem of Converter circuit for switching a switching voltage on DE 69205413 T2 is the fact that accumulated in this scheme, during operation, electrical energy is very large. Since the electric energy accumulated in the capacitors of the n first switching groups of the Converter circuit, the capacitors must be designed for this electrical energy, i.e. its electrical strength and/or capacity. This, however, requires large capacitors constructive values, which are respectively the road. Besides converting circuit because of the large capacitors constructive magnitude requires a lot of space, so that a compact design is required for many applications, such as traction devices will be possible. In addition, the use of large capacitors constructive value leads to high costs for installation and maintenance.

The invention

The task of izaberete the Oia is the creation of a Converter circuit for switching a switching voltage, which would have accumulated less electrical energy during its operation and could be implemented in a compact. This problem is solved by the characteristics of claim 1 of the formula. In dependent clauses is shown a preferred improvement of the invention.

Converter circuit according to the invention, for switching a switching voltage has provided for each phase of the n first switching groups, and n-th first switching group is formed by the first and second power semiconductor switches, and the switching group from the first to (n-1)-th switching groups are formed, respectively, first and second power semiconductor switches and connected to the first and second power semiconductor switches, capacitor, and according to the invention n≥1, and each of the n first switching groups from several existing first switching group is connected in parallel with the respectively adjacent the first switching group, and the first and second power semiconductor switches of the first switching group are connected. According to the invention is provided by R. second switching groups and R third switching groups formed, respectively, first and second power Polop vodnikova switches and connected to the first and second power semiconductor switches of the capacitor, moreover, R≥1, and each of the p second switching groups from several existing second switching group is connected in parallel with the respectively adjacent second switching group. Each of the p third switching groups from several available third switching group is connected in parallel with the respectively adjacent the third switching group, the first second switching group is connected with the first power semiconductor switch of the n-th first switching group, first and third switching group is connected to the second power semiconductor switch of the n-th first switching group. In addition, the capacitor of the R-th second switching group serially connected to the capacitor of the R-th third switching group.

Due to prescribed R and second R third switching groups and the above-described compounds R second switching groups involved in the operation of the Converter circuit according to the invention, for example, only during the positive half-cycle of oscillation in relation to the phase of the output AC voltage, and R the third switching group is only when a negative half-cycle of oscillation. This makes it possible, it is preferable to reduce electrical energy that is accumulated in the Converter circuit, in particular in the condensate of the arts R the second and third switching groups. Next, the n first switching groups serve only to balance the phase of the output AC voltage, so that several existing first switching groups capacitors n first switching groups in a balanced condition, in the main, do not miss the current and thus also, in the main, do not accumulate electric energy. Thus, the accumulated electric energy conversion schemes can generally be maintained at a low level, causing the capacitors of the Converter circuit should be calculated only on a small quantity of electrical energy, i.e. its electrical strength and/or capacity. Due to the small structural size of the capacitors of the Converter circuit requires very little space, so it is possible to compact design required for many applications, such as traction devices. In addition, due to the small structural size of the capacitors, the costs of installation and maintenance can be maintained preferably at a low level.

These and other objectives, advantages and features of the present invention become apparent from the following detailed descriptions of preferred options for its implementation in conjunction with the drawings.

Brief description of drawings

In the drawings, the image which are:

- figa: first embodiment of a Converter circuit according to the invention;

- fig.1b second embodiment of a Converter circuit according to the invention;

- figs third embodiment of a Converter circuit according to the invention;

- figure 2: the fourth embodiment of the Converter circuit according to the invention;

- tiga: the fifth embodiment of the Converter circuit according to the invention;

- fig.3b: the sixth embodiment of the Converter circuit according to the invention;

- figure 4: the seventh embodiment of the Converter circuit according to the invention.

Used in the drawings, the reference positions and their meaning are given in the list. In principle, identical parts are marked on the figures the same reference position. Describes the different ways of execution are examples of the subject matter and have no restrictive effect.

Detailed description of the invention

On figa depicts the first, in particular single-phase embodiment of a Converter circuit according to the invention for switching a switching voltage. The inverter circuit has provided for each phase R, S, T first switching groups 1.1, ..., 1.n, and n-th first switching group 1.n formed the first 2 and second 3 power the semiconductor switches, and switching groups of the first 1.1 first to (n-1)-th switching groups 1.(n-1) formed, respectively, the first 2 and second 3 power semiconductor switches and connected with the first 2 and second 3 power semiconductor switches of the capacitor 4, and according to the invention n≥1, and each of the n first switching groups 1.1, ..., 1.n several existing first switching groups 1.1, ..., 1.n connected in parallel with the respectively adjacent first switching group 1.1, ..., 1.n, i.e. the n-th first switching group 1.n connected in parallel with (n-1)-th first switching group 1.(n-1), and (n-1)-I first switching group 1.(n-1) - (n-2)-th first switching group 1.(n-2), etc. On figa first 2 and second 3 power semiconductor switches of the first switching groups 1.1 interconnected. The connection point of the first 2 and second 3 power semiconductor switches forms on figa phase output, in particular for phase R.

According to the invention on figa provided by R. the second switching groups 5.1, ..., R and p third switching group 6.1, ..., R formed the first 2 and second 3 power semiconductor switches and connected with the first 2 and second 3 power semiconductor switches of the capacitor 4, and according to the invention R≥1, and to which each of the p second switching groups 5.1, ..., R several existing second switching groups 5.1, ..., R connected in parallel with the respectively adjacent second switching group 5.1,...,R, i.e. p-I second switching group R connected in parallel with (R-1)-th second switching group 5.(p-1), and (p-1)-I second switching group 5.(p-1) - (R-2)-th second switching group 5.(n-2), etc. On figa each of the p third switching groups 6.1, ..., R several existing third switching groups 6.1, ..., R connected in parallel with the respectively adjacent the third switching group 6.1,...,R, i.e. p-I third switching group R connected in parallel with (R-1)-th third switching group 6.(p-1), and (p-1)-I third switching group 6.(p-1) - (R-2)-th third switching group 6.(n-2), etc.

The first second switching group 5.1 connected with the first semiconductor switch 2 to the n-th first switching group 1.n, first and third switching group 6.1 - with the second semiconductor switch 2 to the n-th first switching group 1.n. The condenser 4 R-th second switching group R serially connected to the capacitor 4 R-th third switching group R provided By R. second switching groups 5.1, ..., R and p third switching groups 6.1,..., R and described their connections respectively between themselves, what about the relation to each other and with the n-th first switching group 1.n R second switching groups 5.1, ..., R participate in the work of the Converter circuit according to the invention, for example, only during the positive half-cycle of oscillation in relation to the phase of the output AC voltage, and R the third switching group is only when a negative half-cycle of oscillation. This makes it possible, it is preferable to reduce electrical energy that is accumulated in the Converter circuit, in particular in the capacitors 4 R 5.1 second, ..., R and third 6.1, ..., R switching groups. Next, the n first switching groups 1.1, ..., 1.n serve only to balance the phase of the output AC voltage, so that the capacitors 4 n first switching groups 1.1, ..., 1.n in a balanced state, i.e. the balanced condition of the phase of the output AC voltage, in the main, do not miss the current and thus also, in the main, do not accumulate electric energy. Thus, the accumulated electric energy conversion circuit according to the invention can generally be maintained at a low level, causing the capacitors 4 Converter circuit should be calculated only on a small quantity of electrical energy, i.e. its electrical strength and/or capacity. Due to the small structural size of the capacitors 4 Converter scheme requires m is nimum places so it is possible to preferably compact design required for many applications, for example for traction. In addition, due to the small structural size of the capacitors 4 costs for installation and maintenance can be maintained preferably at a low level.

On figa parallel to the first semiconductor switch 2 to the n-th first switching group l.n included, for example, the circuit 7 limit voltage, and parallel to the second semiconductor switch 3 to the n-th first switching group 1.n the circuit 7 voltage limitation. Circuit 7 limit voltage can be selected as options and is preferable for stabilizing the phase of the output voltage, in particular when the desired phase output voltage 0 Century. Mainly circuit 7 limit voltage includes a capacitor or, as shown in figa, a serial circuit of a resistor and a capacitor. Specialist clear that all other first 2 and second 3 of the semiconductor switches of the first 1.1, ..., 1.(n-1), and also the second 5.1, ..., R and third 6.1, ..., R switching groups may contain circuit 7 limit voltage, in particular of any kind, and/or the circuit current limit, in particular any kind.

On fig.1b depicted the second, in particular single-phase embodiment of a Converter circuit according to of the briteney for switching a switching voltage. Unlike the first version run on figa n-th first switching group 1.n the second option run on fig.1b includes a capacitor 4 connected with the first 2 and second 3 of the semiconductor switches of the n-th first switching group 1.n, and the first second switching group 5.1 connected to the condenser 4 to the n-th first switching group 1.n, first and third switching group 6.1 - condenser 4 to the n-th first switching group 1.n. Due to the condenser 4 to the n-th first switching group 1.n is achieved it is preferable that, in particular, when the desired phase output voltage 0 In this phase the output voltage can be stabilized and thereby achieved without problems and spurious effects. Compared with the first option run on figa the second option run on fig.1b the condenser 4 to the n-th first switching group 1.n can be selected as options and serves not only to limit or voltage regulation and should not be regarded, therefore, as a voltage source. It is also possible, however, figa for clarity, not shown, instead of the capacitor 4 to the n-th first switching group 1.n was provided by a serial circuit of a capacitor 4 and a resistor. It is clear that the condenser 4 to the n-th first switching group 1.n or follow Adelina diagram of the capacitor 4 and resistor can be selected for all of the described embodiments as an option.

On figs depicts a third, in particular single-phase embodiment of a Converter circuit according to the invention for switching a switching voltage. Here the number n first switching groups 1.1, ..., 1.n less than the number p of the second 5.1, ..., R and third 6.1, ..., R switching groups. On figs it then n=1 the first switching groups 1.1, 1.2, p=2 the second switching groups 5.1, 5.2 and p=2 third switching groups 6.1, 6.2. From this it is preferable that need less than the first switching groups 1.1, ..., 1.n and thus less than the first 2 and second 3 power semiconductor switches and fewer capacitors 4, and the inverter circuit according to the invention can be, thus, in General, is additionally reduced in relation to occupy space. Mainly the first and second power semiconductor switches when n=1 the first switching groups 1.1, 1.2, as shown in the example on figs represent respectively wysokonapieciowe bidirectional power semiconductor switch, i.e. formed managed vysokosidyaschim electronic element with a one-way direction pulses, such as turning off thyristor (GTO - Gate Turn-Off Thyristor) or integrated switched thyristor with gate (IGCT - Integrated Gate Commutated Thyristor), and included built-in is a rule-parallel passive unmanaged vysokosidyaschim electronic element with a one-way direction pulses, for example a diode.

Figure 2 shows the fourth, in particular single-phase embodiment of a Converter circuit according to the invention for switching a switching voltage. Here the number n first switching groups 1.1, ..., 1.n corresponds to the number p of the second 5.1, ..., R and third 6.1, ..., R switching groups. Figure 2 is then n=2 the first switching groups 1.1, 1.2, p=2 the second switching groups 5.1, 5.2 and p=2 third switching groups 6.1, 6.2. If the number n first switching groups 1.1, ..., 1.n corresponds to the number p of the second 5.1,...,R and third 6.1, ..., R switching groups, it can preferably be switched in total (2n+1) levels of dial-up voltage Converter circuit according to the invention, i.e. when n=2 in figure 2 can be switched then five levels of dial-up voltage.

Further, it is also possible that the number n first switching groups 1.1, ..., 1.n was greater than the number p of the second 5.1, ..., R and third 6.1, ..., R switching groups.

On figa, 1C of the first 2 and second 3 power semiconductor switches of the first and second switching groups 5.1 are connected, and the connection point of the first 2 and second 3 power semiconductor switches of the first and second switching groups 5.1 connected to the connection point of the capacitor 4 to the n-th first switching GRU is dust 1.n and the first power semiconductor switch 2 to the n-th first switching group 1.n. The first 2 and second 3 power semiconductor switches of the first to third switching group 6.1 are connected, and the connection point of the first 2 and second 3 power semiconductor switches of the first to third switching group 6.1 is connected to the connection point of the capacitor 4 to the n-th first switching group 1.n and the second power semiconductor switch 3 to the n-th first switching group 1.n.

Mainly the first 2 and second 3 power semiconductor switches of each switching groups 1.1, ..., 1.n, 5.1, ..., 5.p and 6.1, ..., R represent bidirectional power semiconductor switches, as shown in the variants run on figa, 1b, 1C and 2.

On figa depicted fifth, in particular single-phase embodiment of a Converter circuit according to the invention for switching a switching voltage. Here the first power semiconductor switch 2, each of the first 1.1, ..., 1.n and each second 5.1, ..., R switching groups is a bidirectional power semiconductor switch. The second power semiconductor switch 3 in each of the first 1.1, ..., 1.n and every third 6.1, ..., R switching groups is also a bidirectional power semiconductor switch. In contrast to the embodiments on figa, 1b, and 2 of the second power semiconductor switch 3 in each of the second switching groups 5.1, ..., R and the first power semiconductor switch 2, each of the third switching group 6.1, ..., R represent unidirectional power semiconductor switches. By this measure it is possible to further simplify the inverter circuit according to the invention.

On fig.3b shows the sixth, in particular single-phase embodiment of a Converter circuit according to the invention for switching a switching voltage. Here the first power semiconductor switch 2, each of the first 1.1, ..., 1.n and every third 6.1,...,R switching groups is a bidirectional power semiconductor switch. The second power semiconductor switch 3 in each of the first 1.1,...,1.n and each second 5.1, ..., R switching groups is also a bidirectional power semiconductor switch. In addition, the first power semiconductor switch 2, each of the second switching groups 5.1, ..., R and the second power semiconductor switch 3 in each of the third switching group 6.1, ..., R represent unidirectional power semiconductor switches. In addition to the benefits of simplifying the Converter circuit, already mentioned in connection with the fifth option run on figa, the voltage across the corresponding capacitor 4 each the Torah 5.1,...,R and every third 6.1, ..., R switching groups in the sixth embodiment, the Converter circuit on fig.3b can be installed very simply, for example, by the specified value, in particular through the regulation.

Figure 4 shows the seventh, in particular single-phase embodiment of a Converter circuit according to the invention for switching a switching voltage. Here the first 2 and second 3 power semiconductor switches of each of the first switching groups 1.1, ..., 1.n are bidirectional power semiconductor switches. The first 2 and second 3 power semiconductor switches each second 5.1, ..., R and every third 6.1, ..., R switching groups are unidirectional power semiconductor switches. By this measure Converter circuit according to the invention is a rectifier implemented very simply and also compact, since it costs a minimum number of bidirectional power semiconductor switches.

Mainly corresponding bidirectional power semiconductor switch of the embodiment of the Converter circuit according to the invention on figa-4 formed manageable electronic element with a one-way direction pulses, for example, b is the polar transistor (IGBT - Insulated Gate Bipolartransistor) or, as shown in figs, - off thyristor (GTO - Gate Turn-Off Thyristor) or integrated switched thyristor with gate (IGCT - Integrated Gate Commutated Thyristor), and included a counter-parallel passive unmanaged vysokosidyaschim electronic element with a one-way direction pulses, for example a diode. The first 2 and second 3 power semiconductor switches made on figa, 1b, 1C, 2 in the form of bidirectional power semiconductor switches, are installed within the corresponding switching groups 1.1, ..., 1.n, 5.1, ..., R, 6.1, ..., R so that they have a counter controlled the direction of the main current, i.e. controlled electronic elements with unidirectional direction pulses have opposite relative to each other managed direction of the main current. In addition, passive, unmanaged electronic elements with unidirectional direction of the pulses of the first 2 and second 3 power semiconductor switches in figa, 1b, 1C, 2 installed within the corresponding switching groups 1.1, ..., 1.n, 5.1, ..., R, 6.1, ..., R so that they are opposite with respect to each other driven current direction.

The corresponding unidirectional power semiconductor switch in the options perform transformations is bateley circuit according to the invention on figa, 3b, 4 formed predominantly passive unmanaged electronic element with a one-way direction pulses, for example a diode. As mentioned above, the Converter circuit according to the invention on figa, 3b, 4 due to this measure can be further simplified so that it takes less managed electronic elements with unidirectional direction pulses and management costs can be dramatically reduced. The first 2 and second 3 power semiconductor switches made on figa, 3b, 4 in the form of bidirectional power semiconductor switches, are installed within the corresponding first switching groups 1.1, ..., 1.n so that they have a counter controlled the direction of the main current, i.e. controlled electronic elements with unidirectional direction pulses have opposite relative to each other managed direction of the main current. Next on figa, 3b have respective second 5.1, ...,R and third 6.1, ..., R switching groups passive unmanaged electronic elements with unidirectional direction of the pulses of the first 2 and second 3 power semiconductor switches are set within the respective second 5.1,...,R and third 6.1, ..., R switching groups so that they have built cnie in relation to each other in the direction of the current. Finally, the first 2 and second 3 power semiconductor switches made to figure 4 in the form of a unidirectional power semiconductor switches, are installed within the corresponding second 5.1, ..., R and third 6.1, ..., R switching groups so that they are opposite relative to each other in the direction of the current.

In addition, the most preferred was the integration of the n first switching groups 1.1, ..., 1.n the first two power semiconductor switches 2, respectively, adjacent the first switching groups 1.1, ..., 1.n into a single module, i.e. there are several available first switching groups 1.1, ..., 1.n in one integrated module, the first power semiconductor switch 2 to the n-th first switching group 1.n and the first power semiconductor switch 2 (n-1)-th first switching group 1.(n-l), the first power semiconductor switch 2 (n-1)-th first switching group 1.(n-1) and the first power semiconductor switch 2 (n-2)-th first switching group 1.(n-2) and so on were the preferred integration of the n first switching groups 1.1, ..., 1.n two second power semiconductor switch 3, respectively adjacent the first switching groups 1.1, ..., 1.n into a single module, i.e. there are several available first switching groups 1.1, ..., 1.n in one module integrated ofany second power semiconductor switch 3 to the n-th first switching group 1.n and the second power semiconductor switch 3 (n-1)-th first switching group 1.(n-1), the second power semiconductor switch 3 (n-1)-th first switching group 1.(n-1) and the second power semiconductor switch 3 (n-2)-th first switching group 1.(n-2), etc. Such modules are usually standard half-bridge modules, and in accordance with this simple, little prone to failure and also inexpensive. Further, several existing second switching groups 5.1, ..., R was preferred integration o u R second switching groups 5.1, ..., R first two power semiconductor switches 2, respectively, adjacent the second switching groups 5.1, ..., R in one module and the second power semiconductor switch 3 respectively adjacent second switching groups 5.1, ..., R in one module are described in detail above for the first switching groups 1.1, ..., 1.n. In addition, several existing third switching groups 6.1, ..., R was preferred integration o u R third switching groups 6.1, ..., R first two power semiconductor switches 2, respectively neighboring third switching groups 6.1, ..., R in one module and the second power semiconductor switch 3, respectively neighboring third switching groups 6.1, ..., R in one module are described in detail above for the first switching groups 1.1,..., 1.n way. It is clear that in detail above, the integration of the respective first 2 and second 3 power semiconductor switches applies to all variants of execution of the Converter circuit according to the invention on figa-4.

It is also possible to integrate the n first switching groups 1.1, ..., 1.n, p 5.1 second, ..., R and third 6.1, ..., R switching groups, respectively, the first 2 and second 3 power semiconductor switches in a single module. As already mentioned, the modules are usually standard half-bridge modules, and in accordance with this simple, little prone to failure and also inexpensive. Here it is clear that in detail above, the integration of the respective first 2 and second 3 power semiconductor switches applies to all variants of execution of the Converter circuit according to the invention on figa-4.

The multiphase sold Converter circuit according to the invention mainly parallel connected p-th second switching group R phases R, S, T and R-e third switching group R phases R, S, T. the Appropriate connections are made on the capacitors 4 corresponding second switching groups R and the capacitor 4 to the relevant third switching groups R

In order preferably by multiphase put into effect the Anna Converter circuit, it was possible to save space, capacitors 4 R-th second switching group R phases R, S, T mostly combined into a single capacitor. In addition, the capacitors 4 p's third switching groups R phases R, S, T mainly also combined into a single capacitor.

In General, the inverter circuit according to the invention for switching a switching voltage is, thus, a solution that is small accumulated electric energy during its operation and a compact design and is thus simple, stable and not prone to failure of the device.

The reference list of items

1.1, ..., 1.n first switching group,

2 - the first power semiconductor switch,

3 - second power semiconductor switch,

4 - condenser,

5.1, ..., R second switching group,

6.1, ..., R third switching group,

7 - circuit voltage limitation.

1. Converter circuit for switching a switching voltage, containing provided for each phase (R, S, T) n first switching groups 1.1, ...1.n), and n-th first switching group 1.n) formed the first power semiconductor switch (2) and the second power semiconductor switch (3)and the switching group from the first lane is Oh (1.1) to (n-1)-th formed, respectively, the first power semiconductor switch (2), the second power semiconductor switch (3) and the capacitor (4), which is connected with the first and second power semiconductor switches (2, 3), and each of the n first switching groups 1.1, ...1.n) is connected with the respectively adjacent first switching group (1.1, ...1.n), and the first power semiconductor switch (2) and the second power semiconductor switch (3) first switching group (1.1) are connected, characterized in that n≥1 and R second switching groups 5.1, ..., R) and p third switching groups (6.1, ..., R)formed, respectively, the first power semiconductor switch (2), the second power semiconductor switch (3) and the capacitor (4), which is connected with the first and second power semiconductor switches (2, 3), and R≥1, and each of the p second switching groups 5.1, ..., R) connected in parallel with the respectively adjacent second switching group (5.1, ..., R), each of R third switching groups (6.1, ..., R) are connected in parallel respectively with neighbouring third switching group (6.1, ..., R), the first second switching group (5.1) connected with the first power semiconductor switch (2) the n-th first switching group 1.n), first and third switching group (6.1) is connected to the second is silt semiconductor switch (3) the n-th first switching group 1.n), when this capacitor (4) R-th second switching group (R) serially connected with the capacitor (4) R-th third switching group (R).

2. The circuit according to claim 1, characterized in that parallel to the first power semiconductor switch (2) the n-th first switching group 1.n) includes a circuit (7) to limit the voltage and parallel to the second power semiconductor switch (3) the n-th first switching group 1.n) includes a circuit (7) to limit the voltage.

3. The circuit according to claim 2, characterized in that the circuit (7) limitation of voltage includes a capacitor.

4. The circuit according to claim 2, characterized in that the circuit (7) to limit the voltage contains a serial circuit of a resistor and a capacitor.

5. The circuit according to claim 1, characterized in that the n-th first switching group 1.n) includes a capacitor (4)connected with the first power semiconductor switch (2) and the second power semiconductor switch (3) the n-th first switching group 1.n)and the capacitor (4) the n-th first switching group 1.n) are connected to the first second switching group (5.1) and the first to third switching group (6.1).

6. The circuit according to any one of claims 1 to 4, characterized in that the first power semiconductor switch (2) and the second power semiconductor switch (3) first second switching group (5.1) the connection is between us, moreover, the connection point of the first power semiconductor switch (2) and the second power semiconductor switch (3) first second switching group (5.1) connected with the first power semiconductor switch (2) the n-th first switching group 1.n), the first power semiconductor switch (2) and the second power semiconductor switch (3) first and third switching groups (6.1) are connected, and the connection point of the first power semiconductor switch (2) and the second power semiconductor switch (3) first and third switching groups (6.1) is connected to the second power semiconductor switch (3) the n-th first switching group 1.n).

7. The circuit according to claim 5, characterized in that the first power semiconductor switch (2) and the second power semiconductor switch (3) first second switching group (5.1) are connected, and the connection point of the first power semiconductor switch (2) and the second power semiconductor switch (3) first second switching group (5.1) is connected to the connection point of the capacitor (4) the n-th first switching group 1.n) and the first power semiconductor switch (2) the n-th first switching group 1.n), the first power semiconductor switch (2 and the second is silt semiconductor switch (3) first and third switching groups (6.1) are connected, moreover, the connection point of the first power semiconductor switch (2) and the second power semiconductor switch (3) first and third switching groups (6.1) is connected to the connection point of the capacitor (4) the n-th first switching group 1.n) and the second power semiconductor switch (3) the n-th first switching group 1.n).

8. The circuit according to any one of claims 1 to 5 or 7, characterized in that the number n first switching groups 1.1, ..., 1.n) corresponds to the number p of the second (5.1, ..., R) and third (6.1, ..., R) switching groups.

9. The circuit according to any one of claims 1 to 5 or 7, characterized in that the number n first switching groups 1.1, ..., 1.n) is less than the number p of the second (5.1, ..., R) and third (6.1, ..., R) switching groups.

10. The circuit according to any one of claims 1 to 5 or 7, characterized in that the number n first switching groups 1.1,...,1.n) is greater than the number p of the second (5.1, ..., R) and third (6.1, ..., R) switching groups.

11. The circuit according to claim 1, characterized in that the first power semiconductor switch (2) and the second power semiconductor switch (3) each switching group (1.1, ..., 1.n, 5.1, ..., R, 6.1, ..., R) is a bidirectional power semiconductor switch.

12. The circuit according to claim 1, characterized in that the first power semiconductor switch (2) and the second power semiconductor switch (3) each of the first (1.1, ..., 1.n) is every second (5.1, ..., R) switching groups is a bidirectional power semiconductor switch, the second power semiconductor switch (3) each of the first (1.1, ..., 1.n) and every third (6.1, ..., R) switching groups is also a bidirectional power semiconductor switch, the second power semiconductor switch (3) each second switching group (5.1, ..., R) and the first power semiconductor switch (2) each of the third switching group (6.1, ..., R) are unidirectional power semiconductor switches.

13. The circuit according to claim 1, characterized in that the first power semiconductor switch (2) each of the first (1.1, ..., 1.n) and every third (6.1, ..., R) switching groups is a bidirectional power semiconductor switch, the second power semiconductor switch (3) each of the first (1.1, ..., 1.n) and each second (5.1, ..., R) switching groups is also a bidirectional power semiconductor switch, the first power semiconductor switch (2) each second switching group (5.1, ..., R) and the second power semiconductor switch (3) each of the third switching group (6.1, ..., R) are unidirectional power semiconductor switches.

14. The circuit according to claim 1, characterized in that the first power semiconductor switch (2) and the second power semiconductor switch (3) each first switching group (1.1, ..., 1.n) represent bidirectional power semiconductor switch, the first power semiconductor switch (2) and the second power semiconductor switch (3) every second (5.1, ..., R) and every third (6.1, ..., R) switching groups are unidirectional power semiconductor switches.

15. The scheme on any of 11 to 14, characterized in that the bidirectional power semiconductor switch formed by a controlled electronic element with a one-way direction pulses and included a counter-parallel passive unmanaged electronic element with a one-way direction pulses.

16. The circuit according to any one of p-14, characterized in that the unidirectional power semiconductor switch formed passive unmanaged electronic element with a one-way direction pulses.

17. The circuit according to claim 1, wherein the n first switching groups 1.1, ..., 1.n) two of the first power semiconductor switch (2) respectively adjacent the first switching groups 1.1, ..., 1.n) are combined in one module and devorah power semiconductor switch (3) respectively adjacent the first switching groups 1.1, ..., 1.n) are also combined into a single module.

18. The scheme 17, characterized in that R second switching groups 5.1, ..., R) two of the first power semiconductor switch (2) respectively adjacent second switching groups 5.1, ..., R) combined in one module and two second power semiconductor switch (3) respectively adjacent second switching groups 5.1, ..., R) also combined into a single module, with R third switching groups (6.1, ..., R) two of the first power semiconductor switch (2) respectively adjacent third switching groups (6.1, ..., R) combined in one module and two second power semiconductor switch (3) respectively adjacent third switching groups (6.1, ..., R) also combined into a single module.

19. The circuit according to claim 1, wherein the n first switching groups 1.1, ..., 1.n) and R second (5.1, ..., R) and third (6.1, ..., R) switching groups, respectively, the first power semiconductor switch (2) and the second power semiconductor switch (3) are combined into one module.

20. The circuit according to claim 1, characterized in that several phases (R, S, T) R-th second switching group (5.1, ...,R) phases (R, S, T) and p s third switching group (6.1, ..., R) phases (R, S, T) are connected in parallel.

21. Scheme in claim 20, characterized in that the capacitor (4) p-s : the x switching groups (R) phases (R, S, T) combined into a single capacitor, and the capacitor (4) p's third switching groups (R) phases (R, S, T) also combined into a single capacitor.



 

Same patents:

FIELD: electronics, possible use as synchronized source of high voltage with low output resistance, large impulse power and controlled multiplication coefficient.

SUBSTANCE: in accordance to invention, serial-wave method of commutation of multiplication sections allows usage of components only meant for original voltage. Output multi-kilovolt voltage may exceed original voltage dozens and hundreds of times. Principle of operation - parallel charge of accumulating capacitors of sections, then enabling of them into serial circuit, synchronously with control signal. Multiplication coefficient is varied by duration of control impulse and alteration of original voltage from outside.

EFFECT: overcoming of dependence of key capacitor multiplexers on component parameters; invention of compact, easily adaptable, universal, with possible synchronization, flexibly controlled, powerful module for multiplication of voltage without induction.

2 cl, 7 dwg

FIELD: power engineering, industrial techniques for transformerless voltage rise, multistage generators, radio electronics, and medical instrumentation engineering.

SUBSTANCE: proposed multistage voltage multiplier has two bridge circuits, each incorporating two valves and two capacitors. Bridge circuit is connected at its inputs in phase opposition. Each output lead of every bridge circuit is connected to output valve. Integrated leads of output valves form output of first-stage. Each output lead of bridge circuit is connected to one output lead of one similar additional bridge circuit whose second output lead is connected to additional output valve lead. Other leads of additional output valves are connected to respective additional output leads of other additional bridge circuit and to ripple capacitor to form common output of next stage. Input of each additional bridge circuit formed by interconnection of two valves is connected through capacitor to respective input of respective bridge circuit. Connected to output lead of each additional bridge circuit coupled with additional output lead is output lead of next similar first additional bridge circuit to form output of next stage. As an alternative, one respective additional bridge circuit is connected to diagonally opposite terminals of first output lead of first bridge circuit and of second output lead of second bridge circuit, as well as to diagonally opposite terminals of second output lead of first bridge circuit and of first output lead of second bridge circuit. Each additional bridge circuit has two valves inserted in opposing arms of additional bridge circuit, capacitors being inserted in two other opposing arms; like valves of bridge circuit and of additional one are connected cumulatively. Each output lead of second diagonally opposite terminals of bridge circuit is connected to additional output valves, the latter being integrated in pairs with other respective valves. Integrated leads of additional output valves form output leads of next stage which are connected to ripple capacitor. Connected to output lead of each additional bridge circuit coupled with additional output valve is output lead of next additional bridge circuit similar to first one in its arrangement and connection. This forms output of next stage.

EFFECT: enhanced efficiency of multiplier incorporating provision for attaining several different voltage levels across output.

2 cl, 2 dwg

FIELD: power engineering.

SUBSTANCE: proposed cascaded voltage amplifier has two bridge circuits each incorporating two diodes and two capacitors. Outputs of bridge circuits are connected in phase opposition. Each output lead of either bridge circuit is connected to output diode. Interconnected leads of output diodes form first-stage output. Each output lead of bridge circuit is connected to one output lead of respective identical additional bridge circuit whose second output lead is connected to lead of additional output diode. Additional output diodes have their other leads connected to respective additional output diodes of other additional bridge circuit and to ripple capacitor to organize output of next stage. Input of each additional bridge circuit formed by interconnection of two diodes is connected through capacitor to respective input of bridge circuit. Output lead of next additional bridge circuit identical to first one and connected in same way as first additional bridge circuit to organize output of next stage is connected to output lead of each additional bridge circuit connected to additional output diode. As an alternative, each respective additional bridge circuit is connected across two diagonally opposite junctions of first output lead of first bridge circuit and second output lead of second bridge circuit, as well as second output lead of first bridge circuit and first output lead of second bridge circuit. Each additional bridge circuit has two diodes inserted in opposite arms of additional bridge circuit and capacitors are inserted in two other opposing arms, like-polarity diodes of bridge circuit and additional bridge circuit being connected cumulatively. Each output lead of second pair of diagonally opposite junctions of bridge circuit is connected to additional output diode, additional output diodes being interconnected in pairs through other leads. Interconnected leads of additional output diodes form output leads of next stage which are connected to ripple capacitor. Output of next stage is organized like that of first alternative.

EFFECT: enhanced multiplier efficiency for organizing several different voltage levels at output.

4 cl, 5 dwg

The invention relates to electrical engineering and can be used in devices power

The invention relates to a circuit for generating negative voltage to the first transistor, the first output of which is connected to the input of the output circuit and the second output of which is connected to the output pin of the circuit and the output gate of which is connected through the first capacitor to the first output clock signal, the second transistor, the first output of which is connected to the output gate of the first transistor, the second terminal of which is connected with the second output of the first transistor and the output gate of which is connected to the first output of the first transistor and the second capacitor, the first output of which is connected with the second output of the first transistor, and the second output of which is connected with the second output clock signal, and the transistors are MOS transistors, made at least one triple pocket (Triple Well)

The invention relates to a Converter equipment and can be used as load testing and adjustment of different types of DC power systems

FIELD: power engineering.

SUBSTANCE: proposed cascaded voltage amplifier has two bridge circuits each incorporating two diodes and two capacitors. Outputs of bridge circuits are connected in phase opposition. Each output lead of either bridge circuit is connected to output diode. Interconnected leads of output diodes form first-stage output. Each output lead of bridge circuit is connected to one output lead of respective identical additional bridge circuit whose second output lead is connected to lead of additional output diode. Additional output diodes have their other leads connected to respective additional output diodes of other additional bridge circuit and to ripple capacitor to organize output of next stage. Input of each additional bridge circuit formed by interconnection of two diodes is connected through capacitor to respective input of bridge circuit. Output lead of next additional bridge circuit identical to first one and connected in same way as first additional bridge circuit to organize output of next stage is connected to output lead of each additional bridge circuit connected to additional output diode. As an alternative, each respective additional bridge circuit is connected across two diagonally opposite junctions of first output lead of first bridge circuit and second output lead of second bridge circuit, as well as second output lead of first bridge circuit and first output lead of second bridge circuit. Each additional bridge circuit has two diodes inserted in opposite arms of additional bridge circuit and capacitors are inserted in two other opposing arms, like-polarity diodes of bridge circuit and additional bridge circuit being connected cumulatively. Each output lead of second pair of diagonally opposite junctions of bridge circuit is connected to additional output diode, additional output diodes being interconnected in pairs through other leads. Interconnected leads of additional output diodes form output leads of next stage which are connected to ripple capacitor. Output of next stage is organized like that of first alternative.

EFFECT: enhanced multiplier efficiency for organizing several different voltage levels at output.

4 cl, 5 dwg

FIELD: power engineering, industrial techniques for transformerless voltage rise, multistage generators, radio electronics, and medical instrumentation engineering.

SUBSTANCE: proposed multistage voltage multiplier has two bridge circuits, each incorporating two valves and two capacitors. Bridge circuit is connected at its inputs in phase opposition. Each output lead of every bridge circuit is connected to output valve. Integrated leads of output valves form output of first-stage. Each output lead of bridge circuit is connected to one output lead of one similar additional bridge circuit whose second output lead is connected to additional output valve lead. Other leads of additional output valves are connected to respective additional output leads of other additional bridge circuit and to ripple capacitor to form common output of next stage. Input of each additional bridge circuit formed by interconnection of two valves is connected through capacitor to respective input of respective bridge circuit. Connected to output lead of each additional bridge circuit coupled with additional output lead is output lead of next similar first additional bridge circuit to form output of next stage. As an alternative, one respective additional bridge circuit is connected to diagonally opposite terminals of first output lead of first bridge circuit and of second output lead of second bridge circuit, as well as to diagonally opposite terminals of second output lead of first bridge circuit and of first output lead of second bridge circuit. Each additional bridge circuit has two valves inserted in opposing arms of additional bridge circuit, capacitors being inserted in two other opposing arms; like valves of bridge circuit and of additional one are connected cumulatively. Each output lead of second diagonally opposite terminals of bridge circuit is connected to additional output valves, the latter being integrated in pairs with other respective valves. Integrated leads of additional output valves form output leads of next stage which are connected to ripple capacitor. Connected to output lead of each additional bridge circuit coupled with additional output valve is output lead of next additional bridge circuit similar to first one in its arrangement and connection. This forms output of next stage.

EFFECT: enhanced efficiency of multiplier incorporating provision for attaining several different voltage levels across output.

2 cl, 2 dwg

FIELD: electronics, possible use as synchronized source of high voltage with low output resistance, large impulse power and controlled multiplication coefficient.

SUBSTANCE: in accordance to invention, serial-wave method of commutation of multiplication sections allows usage of components only meant for original voltage. Output multi-kilovolt voltage may exceed original voltage dozens and hundreds of times. Principle of operation - parallel charge of accumulating capacitors of sections, then enabling of them into serial circuit, synchronously with control signal. Multiplication coefficient is varied by duration of control impulse and alteration of original voltage from outside.

EFFECT: overcoming of dependence of key capacitor multiplexers on component parameters; invention of compact, easily adaptable, universal, with possible synchronization, flexibly controlled, powerful module for multiplication of voltage without induction.

2 cl, 7 dwg

FIELD: power electronics.

SUBSTANCE: transforming circuit for commutation of a set of levels of commutated voltage contains n first commutation groups provided for each phase (R, S, T). To reduce accumulated electric energy of transforming circuit n≥1, p second commutation groups and p third commutation groups are provided, formed respectively by first semiconductor power switch and second semiconductor power switch and with a capacitor connected to first semiconductor power switch and second semiconductor power switch, while p≥1, and each one of p second commutation groups is connected in parallel to appropriately adjacent second commutation group, each one of p third commutation groups is connected in parallel to appropriately adjacent third commutation group, first second commutation group is connected to first semiconductor power switch of n first commutation group (1.n), and first third commutation group is connected to second semiconductor power switch of n first commutation group (1.n). Capacitor of p second commutation group is serially connected to capacitor of p third commutation group.

EFFECT: increased efficiency.

21 cl, 7 dwg

FIELD: electrical engineering, concerns the method of deposition of metals in electrolyte, charging of storage batteries using the summation of direct current and impulse current.

SUBSTANCE: the power supply unit has a DC supply source and an impulse current supply source, where the current power is set depending on the process of coating. The first DC supply source consists of a feeding transformer, thyristor rectifier, instrument shunt, electronic control unit, smoothing reactor. The second impulse current supply source consists of a feeding transformer, diode rectifier, smoothing reactor, thyristor-capacitor unit, electronic control unit, double-wound reactor-transformer.

EFFECT: provided deposition of any metal, enhanced rate of metal deposition, due to variation of the relation of currents, provided the required physical properties of the coating, recovery of storage batteries.

2 cl, 1 dwg

FIELD: electricity.

SUBSTANCE: invention is attributed to pulse technique, specifically to pulse power supply units and is intended for feeding high-voltage pulses to anode or control electrode to provide power supply of klystrons, particle accelerators, magnetrons, travelling-wave tubes and similar devices. Modulator (fig. 1) contains power supply unit (1), capacitors C1, C2), regulation circuit (2), voltage sensing device (VSD) (3), control circuit (CC) (4), modulating device (MD) (5), reference-voltage source (RVS) (12). Switching element (SE) of regulation circuit is made in the form of field-controlled or bipolar insulated-gate transistor (T) with resistor (R) connected with sink or in the form of field-controlled or bipolar insulated-gate T with R connected with source or in the form of field-controlled or bipolar insulated-gate T with inductance connected with sink. Furthermore CC includes comparator one of inputs of which is connected with VSD output the other output of which is connected with RVS, and output of comparator is connected with SE control input. MD is made in the form of connected in series block of switches and switch control circuit. Versions of device configuration and circuit of electronic switch for it are presented.

EFFECT: decrease of mass-dimension characteristics with reliability enhancement.

20 cl, 8 dwg

FIELD: electricity.

SUBSTANCE: present invention can be used in electrical engineering. The element for a distributing device contains a group of connections (1), comprising six bidirectional power semiconductor switches (2, 3, 4, 5, 6, 7) and a capacitor (25). The first switch (2) is connected anti-parallel and in series with switch (3). The third switch (4) is connected anti-parallel and in series with switch (5). The capacitor (25) is connected with the point of connection of the first switch (2) and the second switch (3) and with point of connection of the third (4) and fourth (5) switches. The fifth switch (6) is connected to the point of connection of the first (2) and second (3) switches, and with the fourth switch (5). The sixth switch (7) is connected to the point of connection of the third (4) and fourth (5) switches and with the second switch (3). There are first and second series-connected capacitors (8, 9). The first switch (2) and the third switch (4) are connected to each other at the point of connection of the fist (8) and second (9) capacitors. Proposed also is a converter circuit for switching many voltage levels, containing the said element of a distributing device.

EFFECT: reduced amount of accumulative electrical energy and decrease in dimensions.

15 cl, 5 dwg

Voltage converter // 2374745

FIELD: electricity.

SUBSTANCE: voltage converter consists of transistor switch, transformer, encircling diode, pulse-width modulation controller, current protection sensor, peak detector, the first and the second operating amplifiers, reserve capacity, resistors, smoothing capacitor, throttle, current transformer and their connections. The method differs by the fact that to current transformer there introduced is the third winding which is connected through an additional detector to adjustable output voltage to output "Current Blocking" of pulse-width modulation controller.

EFFECT: steady start up of voltage converter in the system with similar voltage converter operating in parallel for total load irrespective of the number of voltage converters and their power.

3 dwg

FIELD: electric engineering.

SUBSTANCE: bidirectional step-down DC voltage converter (BSVC) may be used as high-voltage dc-dc converter of medium capacity in systems of DC electric equipment, for instance for DC electric locomotives with voltage 3(1.5) kV for supply from contact network with increased voltage of (12(6) kV, 18(9) kV etc.). Proposed BSVC with ratio of high voltage value to amplitude of low voltage pulses equal to K, where K is even number, higher than two, comprises 3-K+5 keys formed by opposite connection of valve with full control and diode, and K capacitors used at single polarity of voltage. Structure of this BSVC includes two key modules (M1 and M2), K-2 additional key modules (AM), three additional keys (AK) and capacitors. Modules M1 and M2 consist each of four keys, serially connected with identical terminals, and middle points of these points serve as low voltage terminals. Each of AM modules consists of three keys, which are serially connected by opposite terminals. Two of AK keys are connected one by one between the first points of M1 and M2 module keys connection, which are counted from terminals of low voltage to the left and right. AM modules are connected in a cascade to modules of M1 and M2 symmetrically relative to them to the left and to the right. K capacitors are connected one by one between points of connection of according terminal outputs of modules M1 and M2 with modules AM, between connection points of neighbouring modules AM and between terminal outputs of terminal modules AM. One of two high voltage terminals is connected to according output terminal of according terminal AM directly, and the second one - via the third AK key connected either by cathode of diode to positive output of high voltage, or by anode of diode to negative output of high voltage.

EFFECT: reduced losses of active power in capacitors, due to use of capacitors with limit values of voltage, which do not exceed amplitude of voltage pulses at low voltage outputs of converter.

5 dwg

FIELD: electricity.

SUBSTANCE: adjustable voltage multiplier includes voltage source consisting of in-series connected storage battery and circuit breaker, switching device, locking diodes and capacitor bank. As switching device there used is locked thyristor the control electrode of which is connected to secondary winding of transformer the beginning of primary winding of which is connected to transistor collector; end of winding is connected to alternating capacitor the second output of which is connected to transistor base; emitter base circuit of transistor includes in-series connected resistor and the second capacitor; one pole of voltage source is connected to average point of primary winding of transformer and between resistor and the second capacitor; the second pole of voltage source is connected to transistor emitter; locked thyristor is connected by means of one of power electrodes to voltage source, and by means of the other power electrode it is connected to throttle with inductance adjustable with core; the second output of throttle is connected to the second pole of voltage source; capacitor bank is connected parallel to throttle through locking diodes; locking diodes have reverse polarity in relation to voltage source.

EFFECT: obtaining the source of adjustable high and low constant voltage of wide control range of potentials and power.

1 dwg

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