The magnetic pulse compression

 

(57) Abstract:

The invention relates to a pulse technique and can be used to power the pulse frequency loads, such as high-power pulsed gas lasers and high-current electron accelerators with high pulse repetition frequency. The invention allows to increase the output voltage during a magnetic pulse compression and simplifies the device. The device contains a primary capacitive drive and thyristor switch connected to a primary winding of a pulse transformer, the load is shunted by a capacitor and inductor, N serially connected links of the magnetic compression, which is included between the secondary winding of the pulse transformer and the load. In each stage magnetic compression in addition to the first storage capacitor serially connected second storage capacitors. Each link contains the output magnetic keys. The secondary winding of the pulse transformer is connected in parallel to the first storage capacitor of the first magnetic element compression. Conclusions weekend magnetic keys, except the last, is connected to the connection point pen link connected to the load. Parallel to the first storage capacitor of each of the magnetic units, except the first, is connected magnetic keys. The device passes the voltage increase in 2 times during the transition energy from link to link, and the output voltage of the 2Ntimes higher than the input voltage, where N is the number of stages of compression. When the charge current of the capacitors of each link automatically paramagnetism cores magnetic keys, which leads to simplification of the device. 1 Il.

The invention relates to a pulse technique and can be used to power the pulse frequency loads, such as high-power pulsed gas lasers and high-current electron accelerators with high pulse repetition frequency.

It is known the magnetic pulse compression, containing high-voltage charging source, gas-discharge switching thyratron and the links of the magnetic pulse compression [1]

The drawback is a limited resource due to the use of high-voltage gas-discharge switch.

Closest to the present invention is a magnetic pulse compression with a fully solid-state switching system using the PE gitogo of pulse compression and demagnetization magnetic keys.

The disadvantage of this device is that during the magnetic pulse compression due to the energy loss decreases the amplitude of the pulse in the transmission of power from link to link. This leads to a significant increase of the output voltage pulse transformer. The agreed discharge of the capacitor of the last section to the load and the energy loss in the process of magnetic pulse compression output voltage pulse transformer can 2 to 3 times greater than the amplitude of the pulse at the load, which complicates the design of pulse transformer when you want to get on the load pulses with an amplitude of ten and hundreds of kilovolts. The disadvantages include the presence of an additional system for degaussing magnetic cores of keys, complicating the device.

The purpose of the invention to increase the output voltage when the power transmission from link to link, and to simplify the device.

This is achieved by the fact that in the known device the magnetic pulse compression containing a primary capacitive drive thyristor key, pulse transformer, load, parallel to which the switched capacitor and the inductor, N pornstargalore and load, the primary capacitive drive and the primary winding of the pulse transformer are connected in series, thyristor key included among the other findings of the primary capacitive drive and the primary winding of pulse transformer, each of the magnetic parts of the compression contains the magnetic key and the first storage capacitor, one lead of which is connected to the shared bus, the secondary winding of the pulse transformer is connected in parallel to the first storage capacitor of the first magnetic element compression, in each of the N magnetic links of compression between the other output of the first storage capacitor and the first output of the magnetic key is inserted the second storage capacitor, in parallel to the first storage capacitor of each of the magnetic units, except the first, additional magnetic key, and the second output of the magnetic key of each of the magnetic parts of the compression, but the N-th connected to the connection point of the first and second storage capacitors subsequent magnetic link compression, the second terminal of the magnetic key of the N-th magnetic link compression is connected to the load, and the magnitude of the capacitances of the first and second storage capacitors each of the N magni is acesse magnetic pulse compression in the transfer of energy from the previous level to the next is a doubling of voltage. The voltage of the last section is in this case U02Nwhere U0the output voltage pulse transformer, N the number of links of the compression device. In addition, unlike the prototype, there is provided the automatic mode rismanchian cores of all magnetic keys without the use of additional system demagnetization, which greatly simplifies the device, especially at high voltages.

In the drawing given diagram of the device.

The proposed magnetic pulse compression has a primary capacitive drive thyristor 1 and key 2, is connected to the primary winding of the pulse transformer 3. The load node contains directly load the active element 4, which may be interelectrode bit period of a pulsed gas laser or vacuum diode accelerator of charged particles, and shunt it to the condenser 5 and the coil 6. Every link to the first accumulation capacitor 7, 9 and 11 are connected to the second storage capacitors 8, 10 and 12 as shown in the drawing. In this capacity capacitors in a single flight with the same: C7C8C9Cwow transformer connected in parallel to the first storage capacitor 7 of the first magnetic element compression. Conclusions magnetic keys 13 and 14 are connected with the connection point of the first and second storage capacitors subsequent links, i.e., the capacitors 9 10 and 11 12, respectively. Conclusion magnetic key 15 is connected to the load. Parallel to the first storage capacitor of each of the magnetic units, except the first, is connected magnetic keys 16 and 17. It also indicates the polarity of the charging voltage of the capacitor units and the direction of flow of the currents on magnetic key (solid arrow corresponds to the discharge current, the dashed charger).

The device operates as follows.

The capacitor 1 is charged from an external source of power indicated on the diagram, the polarity and the charging current of the capacitor flows through the primary winding of pulse transformer 3 in the direction of the dotted arrows. When turning on the thyristor 2 begins the process of energy transfer from the capacitor 1 in the capacitors of the first link 7 and 8 through a pulse transformer. The capacitor 7 is charged directly from the secondary winding of the pulse transformer and the charging current of the capacitor 8 flows through magnetic keys 13 and 16 in the direction of the dotted arrows. To reconcile the(C7+ C8) (Kit)22C7where Kitthe transformation ratio of the pulse transformer. At the end of charge of the capacitors 7 and 8 there is a saturation of the core of the pulse transformer and the capacitor 7 recharged through its secondary winding. During recharge of the capacitor 7, the voltage at the point 18 increases from 0 to 2U0according to the law (1 cos), where U0charging voltage of the capacitors 7 and 8. Increasing the voltage at the point 18 is blocked by the magnetic key of the first link 13, which is saturated at the time of maximum stress on it. After you turn the key 13 begins the process of energy transfer from the first link to the second, i.e. the capacitors 9 and 10. The discharge current of the first line, passing through the key 13 (solid arrow) is the charging current of the capacitors 9 and 10 of the second link. When the capacitor 10 is charged by current flowing through the keys 14 and 17 (dotted arrows). For coherent energy transfer from the first link to the second of the capacitors 9 and 10, which are also equal to each other, are selected from the relation C74C9, i.e., the capacitance of the capacitors of the next link should be 4 times less than the capacitance of the capacitors of the previous link. This is due to the LSA in the transition from link to link is doubled. After charging of the capacitors 9 and 10 (each of them is charged to a voltage 2U0) there is a saturation of the core of the key 16. The capacitor 9 recharged through intense key 16, the voltage at the point 19 is changed from 0 to-4U0. This voltage until the maximum value is blocked key 14. After the saturation energy of the capacitors of the second link is similarly transmitted to the capacitors 11 and 12 of the third link. After saturation of the key 17 and overcharging of the capacitor 11, the voltage at point 20 is changed from 0 to +8U0. The saturation of the key 15 leads to the transfer of energy from the last link in the load.

Thus, in the proposed device is the magnetic pulse compression with pressure increase in 2 times during the transition energy from link to link. Output voltage without regard to the active losses in the 2Ntimes higher than the input voltage, where N is the number of links of the compression device. When the charge current of the capacitors of the next link, which is the discharge current of the capacitor of the previous link, automatically paramagnetism cores magnetic keys next link, and therefore there is no need of applying additional external system demagnetization. In addition to the expense of re-charging of the capacitors 7, 9 and 11. This allows comparison with the prototype to halve the required number of stages of compression.

The magnetic pulse compression containing a primary capacitive drive thyristor key, pulse transformer, load, parallel to which the switched capacitor and the inductor, N series-connected magnetic links of compression, which is included between the secondary winding of the pulse transformer and the load, and the primary capacitive drive and the primary winding of the pulse transformer are connected in series, thyristor key included among the other findings of the primary capacitive drive and the primary winding of pulse transformer, each of the magnetic parts of the compression contains the magnetic key and the first storage capacitor, one lead of which is connected to a common bus, the secondary winding of the pulse transformer is connected in parallel to the first storage capacitor of the first magnetic element compression, characterized in that each of the N magnetic links of compression between the other output of the first storage capacitor and the first output of the magnetic key is inserted the second storage capacitor, parallelnavi magnetic key, and the second conclusion of the magnetic key of each of the magnetic parts of the compression, but the N-th connected to the connection point of the first and second storage capacitors subsequent magnetic link compression, the second terminal of the magnetic key of the N-th magnetic link compression is connected to the load, and the magnitude of the capacitances of the first and second storage capacitors each of the N magnetic links of compression is chosen equal.

 

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