Method for extracting power for auxiliary device from signal, sent to light from phase light controller

FIELD: technology for providing power to auxiliary devices of a light.

SUBSTANCE: power of one or several auxiliary devices 26 of light is extracted from lamp power impulse series, fed by phase light controller 28. Direct current power block 44 is connected to output 38,40 of light controller 28 to produce and store direct current energy for powering auxiliary devices. Controller 48 of lamp is connected to output 38,40 of light controller 28 to transfer power of power impulses to lamp 24. Lamp controller 48 has adjustable impulse transfer characteristic for powering the lamp not to interfere with its operation due to alterations to power consumed by auxiliary devices. Adjustable impulse transfer characteristic may be provided with switching device 76, which either interrupts or blocks selected parts of lamp power impulses. Adjustable impulse transfer characteristic maintains constant apparent brightness of lamp, independently on changes of power consumption by auxiliary devices. In disabled state or in preliminary heating mode transfer of power to lamp 24 is decreased to avoid emission of visible light. In full brightness mode lamp power impulses are practically left unchanged by lamp controller 48.

EFFECT: provision of power to auxiliary devices without using auxiliary force cables and without interfering with operation of light.

3 cl, 16 dwg

 

The invention relates to providing power auxiliary devices of the lamp and, in particular, for the recovery of input DC power from the signal lamp power supplied to the phase dimmer.

Description of the prior art

Lighting for theatrical and architectural applications are provided with food using phase dimmers (dimmers), so that the lamp lights could be turned off gradually or could work with adjustable on the choice of the brightness level. Phase dimmers used for this purpose are well known, they usually contain solid-state switches such as thyristors included between the source of AC power and lamp load. AC voltage source is sinusoidal. Diagram of the phase control unlocks solid key, making it conductive, at some point within the half-cycle sine wave. This point is chosen to serve on the lamp pulse power desired power required to obtain the desired brightness level.

Although the lamp may have a separate internal dimmer, a typical approach in systems with multiple lamps is to install centralized regulators, the input power supply through a cable system, nalozenih to diffuse lighting. Typically, centralized dimmers preferable, as in this case, many lamps can be powered by a single dimmer, they can jointly manage and implement an effective power distribution.

Systems containing lamps and phase dimmers that are widely and successfully used to control light levels in many areas. The effects of regulating the illumination provided by such lamps are increasingly required to complement other adjustable parameters, which are provided with auxiliary devices and automation. For example, the lamp is powered by a dimmer, it may be desirable to add a mechanical device such as a cassette for remote changing of filters (scrolling) or rotating disks with filters or patterns (gobos) or similar device. It may be desirable to move the lamp motors built into its mounting supports to the beam of light from the lamp could be aimed by its horizontal and vertical movement. The lamp can be provided with other support mechanisms, such as a lens with a variable focal length, iris or shutter.

Such subsidiary will ustroystvami.imeet power supply for its operation. The engines used for automation and assistive devices, usually are driven by direct current at low voltage. The power supplied by the regulators to power the lamps, served in a sequence of pulses of power lamps with a frequency depending on the frequency of the AC current. The pulses can follow with the mains frequency, or a multiple of it by frequency, depending on the design of the dimmer. The engines typically used for auxiliary devices cannot be powered directly by the pulses supplied by the dimmer on the lamp. Therefore, in the well-known centralized lighting control to supply power DC with the aim of driving the auxiliary devices are used auxiliary power cables. In the system this type of lamp connected to a single cable system that supplies power to the lamp from the dimmer, and other independent cable system providing auxiliary power. Such a system is expensive and complex, especially in view of the fact that a single plant can be used a large number of lamps.

Another disadvantage of using independent wiring to power auxiliary devices are faced with retrofitting existing with the system light control, in which the lamps and the system power cables have been installed previously. If a previously installed system, it is desirable to add the supplied power auxiliary devices, adding a new additional cable systems for power auxiliary devices can be expensive and difficult process.

In order to overcome the problems arising from the needs of individual cable systems to power the lamps and auxiliary devices, it would be desirable to remove power to power auxiliary devices from the power supply of the lamps is supplied to the lamp phase dimmer.

One potential difficulty with this extraction of power to auxiliary devices is that assistive devices used in conjunction with lamps have a variable power consumption. For example, the motor moving the lamp for the guidance of the light beam, may consume little power or not to consume it at all, when the lamp is fixed, but will consume increased power when the lamp is moved. Similarly, when operating other types of assistive devices lamp, requires power supply, power consumption may change over time. If auxiliary power extracted from the power, under the by a dimmer for the lamp supply, changes the brightness of the light emitted by the lamp can be changed. The changes in light due to power auxiliary devices are distracting, annoying and unwanted.

Another potential difficulty is that the power for powering auxiliary devices to be extracted from the power supply of the lamp coming from the dimmer must be sufficient to operate the auxiliary device, even when the lamp is off. But if the auxiliary device and the lamp is supplied with power at the same time, the level of power required for operation of the auxiliary device may be so large that the lamp will be powered enough to glow. This is undesirable, because the lamp must be able to shut down or go into a state of preheating filaments, and even in this mode, power to power the auxiliary devices must be available.

Another requirement is the ability to power the lamp for her work on full brightness. If power to power the auxiliary device is removed from the power supply of the lamp, it must be achieved so as not to reduce the power supply of the lamp in a state of full inclusion.

The invention

The main the purpose of the present invention is the extraction of power to auxiliary devices of the lamp from the power supply of the lamp, submitted phase dimmer, without the use of auxiliary power DC cables and without deterioration of the lamp. Other purpose is to provide a method and system for extraction of power to auxiliary devices in a wide range of loads generated by the auxiliary devices, while maintaining the ability to use the lamp with the selected brightness levels, from an off state to full power; the creation of a method and system for extraction of power to auxiliary devices, allowing the lamp to operate in the off state or mode preheating; and a method and system for extraction of power to auxiliary devices, allowing the lamp to operate at full brightness.

Briefly, in accordance with the invention, a system power supply for lamp having a lamp and an auxiliary device requiring power supply and having a variable power consumption. The power supply system includes a phase dimmer with solid key, supplying the lamp pulse power and having access. Power supply auxiliary device connected between the output of the dimmer, and fed by the auxiliary device. Branch circuit power lamp connected between the output of the m dimmer and lamp, to transmit power pulses of power to the lamp.

Also in accordance with the invention proposes a method of extracting power to operate auxiliary devices of the lamp pulse lamp power supplied to the lamp phase dimmer. The method includes applying the output pulse from the phase dimmer input power scheme assistive devices. Power output from the power circuit of the auxiliary device is an auxiliary device lamp with variable power consumption. The output pulses from the phase dimmer is fed to the input of the controller lamp. Power output from the lamp controller is fed to the lamp. Transmission output pulses from the phase dimmer on the lamp is regulated by the controller of the lamp.

List of drawings

The present invention together with the above and other objectives and advantages may be better understood from the following detailed description of preferred forms of implementation, illustrated in the drawings, in which:

Figure 1 shows a block diagram of a system power supply of the lamp, constructed in accordance with the present invention.

Figure 2 is a schematic diagram of the power supply unit auxiliary device in the system electr the power shown in figure 1.

Figure 3 is a schematic diagram of a controller of the lamp in the power supply system shown in figure 1.

Figa and 4B represent the shape of the voltage at the output of the phase dimmer and controller input lamp mode preheating of the lamp at high and low auxiliary load, respectively.

Figa and 5B represent the shape of the voltage at the output of the phase dimmer and controller input lamp in the regime of moderate brightness lamp at high and low auxiliary load, respectively.

Figa and 6B represent the shape of the voltage at the output of the phase dimmer and controller input lamp mode high brightness lamp at high and low auxiliary load, respectively.

Figa and 7B represent the shape of the voltage at the output of the phase dimmer and controller input lamp at full brightness lamp at high and low auxiliary load, respectively.

On Fig shows a block diagram of another form of execution of the power of the lamp in accordance with the present invention, using pulse-width modulation.

Fig.9 is a graph illustrating operating characteristics of the inverter voltage, the fill factor" in the power supply system shown in IG.

Figure 10 shows a simplified schematic diagram of buck Converter that can be used in power supply systems shown in Fig or 11.

Figure 11 shows a block diagram of another implementation of a power system lamp constructed on the basis of the microprocessor in accordance with the present invention.

On Fig shows a block diagram of the algorithm of the program control lamp power, the system power supply of the lamp shown in 11.

Detailed description of preferred forms of carrying out the invention

Refer now to the drawings, first to Fig 1, where schematically shows a block diagram of a power system, generally indicated by the position 20 and constructed in accordance with the principles of the present invention. The system 20 power supply delivers power to power the lamps and auxiliary devices to the lamp 22. The lamp 22 has one or more lamps, forming in General, lamp load 24. In a typical case, the lamp is an incandescent lamp with one or more resistive filaments. The lamp 22 has one or more fed power auxiliary devices, forming generally supporting the load 26. Auxiliary load can be created by any auxiliary devices, is akimi as motors horizontal or vertical movement of the beam, discs of filter or cartridge with remote-controlled filters or wheels with stencils with motor-driven, or requiring power lens with a variable focal length, iris and/or courses or other devices. Auxiliary load varies depending upon the amount of auxiliary power devices.

The power supply system 20 includes a phase dimmer, generally indicated by the position 28. In General dimmer 28 may be a dimmer conventional type containing a pair of solid-state keys 30 and 32. As can be seen in figure 1, the keys 30 and 32 can be of triode thyristors. Scheme 34 phase control unlocks the thyristors 30 and 32, making them conductive at the selected point of each half-cycle of the input alternating current signal supplied from a standard source 36 of the electricity. Thyristors become non-conductive at the end of each half-cycle. The point of unlocking chosen to submit to the lamp load 24 power corresponding to the desired brightness of the lamp.

After switching thyristors 30 and 32, the dimmer 28 serves to couple its output terminals 38 and 40, a sequence of pulses the lamp supply. The frequency of the pulse power of the lamp is determined by the frequency source 36 AC. In normal SV is coregulator, shown in figure 1, the pulses of alternating polarity are served with double frequency. In other known devices, the pulses may be supplied alternately to the array of lamps with mains frequency or a different frequency associated with the frequency of the network. The pulse duration set point control set by the circuit 34, the phase control specifies the amount of decrease brightness and, thus, determines the brightness of the glow lamp load 24. The inductor 42 is typically included in the transmission path of the pulses of power to the lamp, to reduce abrupt changes in current and to limit the resulting vibration and noise of the filaments of the lamps.

In accordance with one feature of the invention the power for the auxiliary load 26 is extracted from the pulse power lamp, supplied by the dimmer 28. The system 20 of the power supply contains the auxiliary unit 44 power supply (power supply auxiliary loads)connected between the dimmer 28 and the auxiliary load 26. The auxiliary unit 44 food extracts the auxiliary power from the output signal of the dimmer and delivers it to the auxiliary load 26. The system 20 power supply also contains the branch 46 of the power circuit of the lamp connected between the dimmer 28 and lamp load 24 to supply power from the dimmer 28 on Arroway the load 24. This results in a lamp load 24, and the auxiliary load 26 are fed from the dimmer 28. Since the auxiliary load is supplied from the dimmer 28, for supplying power to lamp and auxiliary loads 24 and 26 need only one cable 50.

In accordance with another feature of the invention, the branch circuit feeding the lamp contains the controller 48 of the lamp, which selectively converts the pulse power lamp coming from the dimmer 28, and transmits power to the lamp load 24. The controller 48 of the lamp has an adjustable characteristic of the transmission pulses. Adjustable characteristic of the transmission pulses allows the controller 48 of the lamp to maintain a constant apparent brightness of the lamp, irrespective of changes in the power consumed by the auxiliary load, allows the lamp load to work with full brightness and makes it possible to power an auxiliary device in the shutdown mode lamp or mode preheating.

In order to realize all the advantages of the present invention, the auxiliary unit 44 of the power supply and the controller 48 of the lamp in the preferred case are arranged in the lamp 22 or around it and connected to output terminals 38 and 40 of the dimmer cable 50. As shown in figure 1, the auxiliary unit 44 of the power supply and the controller 48 Lam is s included in the lamp 22.

The auxiliary unit 44 of the power supply shown in figure 2. Shown in scheme block 44 power supply is a switching power supply DC wide range input signal, forming positive and negative DC supply voltage on the output terminals 52 and 54, respectively, "floating" relative to the terminals 56 of the chassis ground/earth. This power supply is one example of a buck Converter can be used and another form of execution. The block 44 of the power supply used to power auxiliary devices lamp driven by a DC motor. In the framework of the present invention are possible and other auxiliary loads and power sources.

The pulse power lamp output terminals 38 and 40 of the dimmer are fed through the cable 50 and fed to the input terminals 58 and 60 of the power supply. Capacitors 62 and 64 provide filtered pulses for suppression of electromagnetic interference coming from the AC input. The diodes 66 and 68 together with the capacitors 70 and 72 form a voltage doubler, providing a high DC voltage for the block 44 power.

The transformer 74 operates at a high frequency, for example, one hundred kilohertz, running solid-state switching module 76, such as a module OR sold n the d mark "TOPSwitch" firm Power Integrations, Inc. A pair of limiting diodes 78 and 80 is in parallel with the primary of the high-frequency winding of the transformer 74 is connected to the drain of the transistor switching module 76 to protect the switching module 76 surge due to the inductance of the transformer. Diode 82 is a rectifier for the bias winding of the transformer 74. The capacitors 84 and 86 are shunt capacitors.

Feedback is provided by the optocoupler 88, the output of which is connected to the control output switching module 76.

The capacitor 90 provides a bypass for high frequency. The capacitor 92 and resistor 94 provide frequency compensation to stabilize the feedback. The capacitor 90 and the branch including a capacitor 92 and a resistor 94 connected in the bridge scheme Thomson to the point 106, which is an output of the source of the transistor switching module 76. A circuit containing resistors 96 and 98, the capacitor 100 and diode 102, generates the reference voltage for power optocoupler 88. Resistors 104 and 98 form a divider of the input voltage for the circuit of the reference voltage.

The output signal of the transformer 74 is fed through a diode 110 to the P-shaped lowpass filter containing capacitors 112 and 114 and the coil 116 of the inductance. Capacitors 118 and 120 smooth high frequencies. DC voltage charges condense the Torah 112 and 114 to continuously supply a constant current during the pulse supply power to the lamp from the dimmer 28 and in the intervals between these pulses. The power given to the auxiliary power unit 44, varies with changing power auxiliary load 26. This changing power is derived directly and continuously repeated pulses of power to the lamp.

The controller 48 of the lamp shown in figure 3. The pulse power lamp comes on input terminals 122 and 124 with the output terminals 38 and 40 of the dimmer via cable 50. Rectifier bridge 126 rectifies the pulses of power to the lamp, so that the impulses of the same polarity are integrated in the same way the integrator circuit 128 containing the resistors 130 and 132 and capacitor 134. Integrated signal is accumulated in the capacitor 134. When the accumulated integrated signal reaches a threshold, the switching circuit 135 starts the transmission of pulses in the lamp load 24. When the threshold value is reached, the Zener diode 136 becomes conductive, so that through the voltage divider containing resistors 140 and 142, to include normally open bidirectional thyristor optocoupler (optotrak) 138.

When triac optocoupler 138 conducts current, the starting circuit containing resistors 144, 146 and 148, unlock included opposing pair transistors 150 and 152, making them conductive to apply a selectable and adjustable part of the pulse power lamp output terminals of light is the slider 38 and 40 to the lamp load 24. Thyristors 150 and 152 are of opposite polarity and function as a bidirectional solid state switching device. Bypass the ballast resistor 154, which is in parallel with the input terminals 122 and 124 of the controller 48 of the lamp, provides the minimum resistive load for the dimmer 28, when the thyristors 150 and 152 are locked. Shunt resistor 154 is shunted by thyristor 150 and 152, when they conduct current.

The integrator 128 and the switching circuit 135 function to provide an adjustable characteristic of the transmission pulses. The controller 48 of the lamp is not simply transmits impulses to the lamp power from the dimmer 28 to the lamp load 24, and modifies part of the pulses that are transmitted, and thus makes possible the extraction of the auxiliary power without deterioration of the lamp. The effect of such work may be considered on the example of the signals shown figa and b, 5A and b, 6A and b and 7A and B. These images are a little bit idealized, high frequencies in them largely removed to show the basic shape of the signals on the shared input controller 48 lamps and auxiliary unit 44 power. On these graphs, the horizontal X-axis represents time and the vertical axis Y - voltage.

The system 20 power supply can operate in stop mode lamp or preheating filaments, etc is must to apply sufficient power to auxiliary devices of the lamp. This mode is illustrated in figa and 4B. On figa depicts a timing diagram of the voltage pulse power lamp at the output of the dimmer 28 and to the input of the controller 48 of the lamp. This impulse is one of a sequence of pulses fed from the dimmer 28. In the shown circuit pulses the lamp supply serves a dual frequency AC current with alternating opposite polarity, however, can be used and other forms of pulse sequence.

On figa shows the system when the lamp load is in the mode of preliminary heating, and power consumption of the auxiliary load 26 is at a low level. During the first part of the pulse power of the lamp, from the moment T1 to moment T2, the auxiliary power supply unit extracts a relatively small auxiliary power sufficient to generate and maintain the accumulated DC voltage in preparation for the increased need for auxiliary power. During this period, the switching circuit 135 of the controller 48 of the lamp is not conducting current, or open, while the magnitude of the integrated signal accumulated in the capacitors 112 and 114 to the controller 48 of the lamp is maintained or increases.

At the time T2 in the integrator 128 is reached, the threshold switching, and the switching circuits is 135 unlocked and becomes conductive, or closed. The decrease in impedance causes a voltage drop signal at the time T2. During the rest of the pulse, up to the moment T3, the auxiliary unit 44 of the power supply continues to operate, while the switching circuit 135 remains closed and power is supplied to the lamp load 24. This power is sufficient to maintain the lamp filament is in a heated state, but not enough to lamp radiated visible light. At the end of the pulse power of the lamp, at the time T3, the controller 48 of the lamp returns to its initial state. Characteristics of impulse transmission controller 48 of the lamp in this mode of operation is such that only a small part of the full pulse is transmitted to the lamp load.

Figv illustrates the lamp on the condition of preheating and with increased consumption of auxiliary power. Between the beginning of the pulse at time T4 and the time T5 is run in the integrator 128 is not reached, the switching circuit 135 is open, and the circuit supporting unit 44 power remove power for powering auxiliary devices. At the time T5 in the integrator 128 is achieved is run and the switching circuit 135 is closed. The value of the voltage signal falls at time T5 due to the reduction of impedance. During the remaining part of the pulse, from the time T5 to the time T6 at figv, subsidiary b is OK 44 power continues to extract auxiliary power, while the power lamp is also fed through the controller 48 lamp on lamp load 24.

The coil 42 of the inductance in the dimmer 28 prevents changes in the magnitude of the electric current and has a greater impact at higher values of the electric current. Because of this influence the time required for the integrator 128 to start the switching circuit 135, more at higher power consumed by the auxiliary load (pigv)than at lower power consumed by auxiliary load (figa). However, as with low consumption auxiliary power shown in figa, the characteristic of the transmission pulses is such that the power delivered to the lamp load, sufficient only to maintain the filament lamp in a heated state and insufficient to lamp radiated visible light.

If desirable, the operating characteristic of the integrator 128 and the duration of the pulses supplied by the dimmer 28 may be selected to provide full off lamp load. In this case, instead of during the pulse with delay to enable the switching circuit 135 at the time T2, the switching circuit may be kept open during the entire pulse. Mode preheating is preferable mode is full the on off switch, because it is a more constant resistance of the filament and prevents the occurrence of stress.

Figa and 5B illustrate, respectively, the low and the high power consumption of the auxiliary load is low or moderate level of brightness of the lamp load 24. The start pulse power lamp is passed at the time T11 to figa, and from the time T11 to the time T12, the auxiliary unit 44 power produces and stores energy DC, while the controller 48 of the lamp initially blocks the transmission of pulse power on lamp load 24. At the time T12 integrator 128 threshold value, and the switching circuit 135 is closed. Then power is supplied to the lamp load 24 from the time T12 to the end of the pulse power lamp at the time T13. There is a momentary voltage drop at the time T12 due to the reduction of impedance. The characteristic of the transmission pulses is such that the lamp load 24 is applied to the selected part of the full impulse power lamps to maintain the desired moderate level of brightness of the light.

Figv illustrates the operation of the supply system at moderate light and high, not low, the power consumed by the auxiliary load. With the beginning of the pulse power lamp at the time T14 to the time T15, when the integrator 128 is charging and switching circuit 135 is open, the auxiliary unit 44 of the power supply is operating and the DC current power is produced and accumulated. At the time T15, the integrator 128 triggers the switching circuit 135, and power is supplied to the lamp load 24 from the time T15 to the end of the pulse power lamp at the time T16. There is a momentary voltage drop at the time T15 due to the reduction of impedance. Due to the influence of inductor 42, the time required for the integrator 128 to reach the threshold level is a little smaller at low auxiliary power (figa)than at higher level auxiliary power (pigv). The characteristic of the transmission pulses is such that the selected portion of the full impulse power lamp is applied to the lamp load 24 to maintain the same desired moderate level of brightness of the light. The auxiliary unit 44 of the power supply continues to operate from the time T11 to the time T12.

The controller 48 of the lamp maintains a constant apparent brightness of the lamp irrespective of changes in the power consumed by the auxiliary load. In the intermittent fed by auxiliary devices do not degrade the performance of the lamp. If you compare the transmitted part of the pulse figa and 5B, the shape of the pulse at figa between T12 and T13 has a peak, rounded and somewhat sinusoidal. On the contrary, figv forms the pulse between T15 and T16 has a smaller peak, and the shape is more square in its initial part. The shapes of the two parts of the pulse are different from each other, primarily because of the influence of inductor 42, which responds to different current regimes. However, despite differences in form, the power supplied to the lamp load 24, a relatively constant in the cases of low and high auxiliary power, because the area under the curves, or the effective value of the parts of the pulse, in General the same. Transmitted power in regimes of low and high auxiliary power is fairly constant, so that any difference in brightness was not found or was not visible to the observer.

Figa and 6B illustrate a more high, but not maximum, the brightness level of the lamp and at low and high level auxiliary power, respectively. From the beginning of the pulse power lamp at the time T21 at figa until T22 integrator 128 is charged, the switching circuit 135 is turned off, and the auxiliary unit 44 power produces and accumulates energy DC. At the time T22, the integrator 128 includes a switching circuit 135, and from the time T22 to the end of the pulse at the time T23 to the lamp load 24 is energized.

Similarly, as shown in figv, increased auxiliary load from the beginning of the pulse power lamp at the time T24 to the time KZT25 integrate the 128 charging, the switching circuit 135 is turned off, and the auxiliary unit 44 power produces and accumulates energy DC. At the moment KZT25 integrator 128 includes a switching circuit 135, and from that moment KZT25, before the end of the pulse at the time T26, the power is supplied to the lamp load 24.

Waveforms on figa and 6B are quite similar to each other. The influence of the coil 42 of the inductance of the dimmer 28 is smaller than at lower brightness levels (figa and 4B and figa and 5B). In addition, the level average continuous power pulse power lamp coming from the dimmer 28, here above, and the integrator 128 is not fully discharged between pulses. This reduces the time at the beginning of each pulse, necessary to charge the integrator and start the switching circuit 135. As a result, and at low and at high auxiliary power characteristics of the transmission of the pulses is such that the momentum transfer is only slightly delayed after the beginning of the pulse and is transmitted almost the entire pulse. Between low and high levels of consumption auxiliary power there is no visible difference in the brightness of the lamp.

Figa and 7B illustrate the operation of the system 20 power with full brightness level of the lamp and at low and high level auxiliary power, respectively. With a low level of ancillary what Noah capacity (figa) pulse begins at the moment t and ends at time T32. At high auxiliary power (pigv) pulse begins at the moment of tactile substitution for human vision and ends when kzt34. Waveform at figa and 7B are essentially identical. Throughout the pulse and in fact, in another case, the auxiliary unit 44 power produces and stores auxiliary energy DC. Level average continuous power pulses to the lamp power supplied from the dimmer 28 is relatively high and sufficient to support the integrator 128 is fully or almost fully charged. The result is that all, or essentially all, of the pulse power lamp passes through the controller 48 lamp on lamp load 24. Characteristics of impulse transmission at full lamp load is such as to pass essentially full impulse power lamp does not reduce the brightness of the lamp. Extract from the pulse power lamps auxiliary power auxiliary unit 44 power at any level of the auxiliary power has no discernible effect on the apparent full lamp brightness.

Changing the transmission characteristics of pulse controller 28 of the lamp is seen from the comparison of curves on figa, 4A, 6A and 7A and FIGU, 5B, 6B and 7B. In General, the lamp controller receives the pulses of power to the lamp from the dimmer 28 and blocks (does not transmit) are adjustable the selected portion of the pulses of power to the lamp, to regulate their size to reduce the power supplied to the lamp load 24. The reduction is greatest at low levels of power lamp (figa and 4B) and is reduced when the level of the lamp power increases (figa, 5B, 6A and 6B). At high levels of lamp power reduction pulse lamp power is reduced to virtually zero and the pulse power of the lamp is transmitted to the lamp load 24 essentially in the undiscounted state (figa and 7B).

Work and/or management undertaken by the dimmer 28, preferably is adjusted so as to compensate for the characteristics of impulse transmission controller 48 of the lamp. Compared with conventional lamp, with no auxiliary loads 26 and any auxiliary unit 44 power supply, dimmer 28 must submit pulses the lamp supply larger quantities at low and intermediate power levels of the power tubes to get the same brightness of the lamp.

The system 160 power supply in accordance with another form of the present invention shown in Fig-10, where elements identical to elements shown in figure 1-7, are denoted by the same numbers of positions. Dimmer 28 is connected to the lamp 22A of the cable 50. Auxiliary load 26 supplies the power for the auxiliary unit 44 power. Systems is 160 power supply and the auxiliary unit 44 power supply can be included in the lamp 22A, or may be located near it.

The system 160 power supply uses pulse-width modulation (PWM)to convert the pulses to the lamp supply coming from the dimmer 28, and transmit the power to the lamp load 24 with an adjustable characteristic of the transmission pulses. The PWM controller 162 lamp receives the pulses of power to the lamp selected length from dimmer 28, selectively converts these pulses and delivers the power to the lamp load 24. Adjustable characteristic of the transmission pulse controller 162 lamp allows the controller 162 of the lamp to maintain a constant apparent brightness of the lamp, irrespective of changes in the power consumed by the auxiliary load 26, and allows the lamp load to work with full brightness and allows you to provide power to the auxiliary device in the shutdown mode or preheating of the lamp.

The rectifier 164 rectifies the pulses of power to the lamp, the alternating polarity coming from the dimmer 28, and applies the pulses of one polarity to the integrator 166. The integrator 166 generates a DC voltage proportional to the pulse duration of the lamp power supplied by the dimmer 28. This voltage is applied as an input signal to the inverter 168 "voltage fill factor", which from the generator 17 receives the control signal with a constant high frequency. Booster Converter 172 connected between the inverter 168 "voltage fill factor and lamp load 24. Pulses with pulse-width modulation produced by the Converter 168 "voltage fill factor", these pulses have a duty cycle, defined by the DC voltage coming from the integrator 166. Pulses with pulse-width modulation control of the inverter 172 for adjustable and partial blocking of parts of the pulse power lamp, supplied by the dimmer 28, and to ensure thus adjustable transmission characteristics of the pulses.

The operating characteristic of the inverter 168 "voltage fill factor graphically shown in Fig.9. At low power levels the power lamp rectifier 164 and the integrator 166 serves a relatively low voltage V, as indicated by the position 174 figure 9. This state corresponds to the mode preheating of lamp load. The fill factor of the inverter 168 "voltage fill factor is relatively low, and pulses with pulse-width modulation of a relatively short duration serves to control the inverter 172.

When the pulse duration of the lamp power coming from the dimmer 28, increasing the W rectifier 164 and integrator 166 is formed by increasing the voltage V. Increasing the voltage indicated by the position 176 figure 9. When the voltage V increases, the fill factor of the inverter 168 "voltage, the fill factor increases, and pulses with pulse-width modulation increasing duration serves to control the inverter 172. When approaching full brightness of lamp load 24, the voltage V generated by the rectifier 164 and integrator 166, reaches its maximum 178. The fill factor of the inverter 168 "voltage fill factor" also reaches its maximum.

Figure 10 shows an example of a simplified buck Converter 172. Converter 172 contains the key 180, which preferably is a high-speed solid-state switching device controlled by pulses with pulse-width modulation applied by inverter 168 "voltage fill factor". When a pulse with a pulse-width modulation is present, the key 180 is closed, and when the pulse with pulse-width modulation is absent, the key 180 is open. When the pulse duration of the pulse width modulation supplied by inverter 168 "voltage fill factor increases, the proportion of time when the switch 180 is closed, that the same is increased.

The rectified pulses of power to the lamp is served from a rectifier 164 to input terminals 182 and 184 of the inverter 172. A filtering circuit consisting of the coil 186 of the inductor and capacitor 188, delivers a constant voltage power lamp on the capacitor 188. Diode 190 provides a continuous flow of current caused by the decrease of the magnetic field coil 186 inductance after disconnection of the switching device 180.

During operation of the system 160 power supply, shown in Fig-10, the inverter 168 "voltage fill factor" controls the booster Converter 172 to selectively adjustable to block part of the pulse power lamp, supplied by the dimmer 28. The operation of the adjustable block is the key 180 under control of inverter 168 "voltage fill factor, which in turn controls the voltage supplied by the integrator 166 in accordance with the pulse duration of the supply of the lamp.

At low levels of power, for example in mode preheating of lamp load, the key 180 is open for a relatively small fraction of the time, so blocked relatively large part of the pulse power lamp and produces a relatively low voltage lamp. With increasing power levels : the I lamp key 180 is in the closed condition during the growing share of time so are blocked by the lower portions of the pulse power lamp and lamp load 24 serves increasing voltage. At high power levels the power lamp key 180 is closed within the maximum time fraction, and to the lamp load 24 is applied maximum voltage. If it is desired at maximum brightness key 180 may be closed permanently.

Mode preheating lamp power consumption lamp load is low, and sufficient power available for auxiliary load 26. The brightness of the lamp is regulated essentially independently variable power consumed by the auxiliary load 26. At maximum power levels power lamp load during the operation of the auxiliary load 26, the lamp brightness is not reduced.

The system 200 power supply of the lamp in accordance with another form of the present invention is shown at 11, in which elements identical to elements shown in figure 1-10, are denoted by the same numbers of positions. Dimmer 28 is connected to the lamp 22B cable 50. Auxiliary load 26 is fed with direct current from the auxiliary unit 44 power. The system 200 power supply and the auxiliary unit 44 power supply can be included in the lamp 22A or can be located near it.

With the system 200, the power supply provides the microprocessor 202 to the Central processor 204 and memory 206. The rectifier 164 receives the pulses of power to the lamp, the alternating polarity from the dimmer 28 and delivers the impulses of the same polarity on the microprocessor 202 and the input terminals 182 and 184 booster Converter 172.

The sensor 208 time spent in the on state and the sensor 210 of the current values generated from the microprocessor 202 conventional programming tools. Sensor time spent in the on state control pulses supplied from a rectifier 164 and determines the duration of each pulse. This provides a reference operating level of brightness of the lamp, which is determined by the dimmer 28. The sensor current value receives the pulse supplied from the rectifier 164, and performs the computation of its mean-square values to determine the energy contained in each pulse of power to the lamp.

The processor 204 sends a pulse to control the operation of the inverter 172 as described above. These pulses can be pulses with pulse-width modulation with adjustable duration, or they can have a constant duration and adjustable frequency or number of pulses. Actual actual power determined by the sensor 210 of the current values for a given pulse duration will be longer when the power consumption of auxiliary materials the major load, small or absent, and less when the power consumed by the auxiliary load increases. This difference is used to change the supply of pulses from the processor 204 to the inverter 172 to support the lamp brightness constant despite changes in the power consumed by the auxiliary load.

Fig is a block diagram of the algorithm of the program control lamp power performed by the microprocessor 202 of the system 200 power and implements the characteristic of the transmission pulses to power the lamp load 24. The program is invoked by the processor 204 for each pulse received from the rectifier 164, and begins with block 212 beginning. In block 214, the sensor 208 time spent in the on state determines the time spent in the on state, or the duration of the pulse power of the lamp.

In block 216, the program uses found time spent in the on state to obtain the nominal RMS value. Nominal RMS value is the root-mean-square power pulse with duration determined in block 214, in the absence of any power auxiliary load. In block 218, the program also uses found time spent in the on state, to get the batteries the e pulse value pulse-width modulation. Nominal pulse value pulse-width modulation is the magnitude of the impulse, which, when filed by the processor 204 to the inverter 172, provides the desired brightness of the lamp in the absence of any power auxiliary load. The nominal value of pulse width modulation and the nominal RMS value can be obtained from one or more conversion tables stored in memory 206, or can be calculated using a suitable algorithm stored in memory 206.

The value of the pulse width modulation depends on the controlled parameter, such as pulse duration or frequency or number of pulses, which can be modified to change the characteristics of impulse transmission system. This is achieved by changing the proportion of pulses the lamp supply coming from the dimmer 28, which is blocked in the inverter 172. The nominal value of pulse-width modulation for various specific values of time spent in the on state is selected so as to achieve the transmission characteristics of pulse-like characteristic of the transfer pulse provided by the power supply systems 20 and 180. At low power levels the power of the lamp, the share of pulses of power to the lamp and the power transmitted by the tube h is the load 24, is relatively low, so that the power available for auxiliary loads 26, while the on lamp load 24 is fed the low-power or power is not available. With increasing power levels power lamp, the share of pulses the lamp supply blocked in the inverter 172 is reduced, and the power level of the transmitted lamp load increases. With the full power of the lamp is minimal blocking pulse power lamp or lock fails, and passed the maximum power supply of the lamp, so the lamp load 24 works with full brightness.

The pulse power supplied by the dimmer 28, provide for a given brightness of the lamp in the absence of the power consumption of the auxiliary load 26. If the auxiliary load selects the power pulses from the lamp supply current power value of the pulse may be reduced. The magnitude of the reduction may depend on the magnitude of the auxiliary load power switches 28 and other factors. If the pulse power lamp with a reduced current value of power transferred to the lamp load 24 without correction, the resulting brightness of the lamp may be less than a preset desired brightness of the lamp.

The power supply 200 eliminates this problem. In block 220 algorithm sensor 210 about which defines the actual current (RMS) power value of the pulse power of the lamp. This value can be calculated by determining the envelope of the voltage pulse and calculate the RMS value.

In block 222 of the algorithm the actual current value determined in block 220, compared to the nominal current value obtained in block 216. Their difference, ΔRMS is calculated, and is passed to block 224, where it is used to adjust the nominal value of the pulse-width modulation. If a certain current value is equal to the rated current value, then the difference ΔRMS is equal to zero. In this case, the processor supplies the inverter 172 pulses with a nominal pulse-width modulation and it set the desired brightness of the lamp.

If a certain current value differs from the nominal value, the difference ΔRMS different from zero. In this case, the processor 204 executes the adjustment values of pulse width modulation to the nominal value for the correction of this difference. If the power consumption of the auxiliary load reduces the effective value of the power pulse power lamp, the processor 204 modifies the nominal value of the pulse-width modulation to reduce the share of pulses supply of the lamp, which is blocked in the Converter 172, and increases the power transmitted on lamp load is RL 24. Depending on the form of the invention, this change can be performed by changing the pulse width or number of pulses or frequency or similar measures. The processor may obtain a correction factor by calculating the or of the reference table stored in memory 206. The program ends in block 226 the end.

Although the present invention has been described with reference to details of the variants of the implementation shown in the drawings, these details are not intended to limit the scope of the invention, which is defined by the claims.

1. The method of extracting power to operate auxiliary devices of the lamp pulse lamp power supplied to the lamp phase dimmer, including

the output pulse from the phase dimmer input circuit power auxiliary devices;

feeding the output signal from the circuit power auxiliary device to the auxiliary device lamp with variable power consumption;

the output pulse from the phase dimmer input controller lamp;

feeding the output signal from the controller lamp lamp lamp and

regulation of the transmission of the output pulses from the phase dimmer on La the PU controller of the lamp.

2. The method according to claim 1, wherein the adjustment includes changing the transmission characteristics of pulse controller lamp.

3. The method according to claim 1, wherein the adjustment includes changing the transmission characteristics of pulse controller lamp so as to maintain the apparent brightness of the lamp constant irrespective of changes in the power consumed by the auxiliary device is a lamp.

4. The method according to claim 1, in which the output pulse from the phase dimmer input circuit of the auxiliary power supply device and supply the output signal from the controller lamp lamp lamp perform simultaneously by connecting the phase dimmer to the input circuit of the auxiliary power supply device and to the input of the controller lamp.

5. The method according to claim 4, in which the output pulse from the phase dimmer input circuit power auxiliary devices perform constantly for all pulses of power to the lamp.

6. The method according to claim 1, in which the supply of the output signal from the controller lamp includes the production and conservation of energy direct current in the power supply circuit of the auxiliary device while receiving the pulse power lamp and supply the stored energy to the DC auxiliary device is a lamp.

7. The method according to claim 3, in which the change in transmission characteristics of the pulses includes transmission of the lamp is regulated parts of the pulse power of the lamp.

8. The method according to claim 7, in which changing the transmission characteristics of pulse adjustable part of the pulse is chosen so as to prevent visible changes the brightness of the lamp when changing the power consumed by the auxiliary device.

9. The method according to claim 7, in which the said change in transmission characteristics of the pulses comprises using a resistive-capacitive circuit for integrating the pulse power of the lamp, and determining the ratio between the full pulse power lamp and adjustable parts in accordance with the result of integration.

10. The method according to claim 3 in which the said change in transmission characteristics of the pulses includes blocking portions of the pulses of power to the lamp.

11. The method according to claim 10, in which the said change in transmission characteristics of the pulses includes blocking the initial portion of each pulse of power to the lamp and passing the remaining part of each pulse of power to the lamp.

12. The method according to claim 10, in which the said change in transmission characteristics of the pulses includes a pulse-width modulation pulse-power lamp.

13. The method according to claim 3, in which when casting lamp in the off state still referred to the output pulse from the phase dimmer input circuit of the auxiliary power device and the said hearth is, the output signal from the circuit power auxiliary device to the auxiliary device of the lamp, in order to maintain the supply of auxiliary devices, and at the same time, performing the specified regulation of impulse transmission power lamp, reduce the impulse transmission power of the lamp to a level insufficient to radiation lamp light.

14. The method according to claim 3, in which when the lamp mode preheating the transfer pulse supply of the lamp is reduced to a level sufficient only for preheating the lamp.

15. Power supply system for a lamp having a lamp and an auxiliary device, which consumes a variable capacity, containing

phase dimmer, including solid-state key pulse shaping power of the lamp and having an output;

power supply auxiliary device connected between the output of the phase dimmer and the specified auxiliary device; and

branch circuit power lamp included between the output of the phase dimmer and lamp, for transmitting power from the pulse power lamp on the lamp, and this branch of the power circuit of the lamp includes a lamp controller with solid-state switching device in a transmission path of the pulses of power to the lamp.

16. The power supply system according to clause 15, in which the controller lamp has an adjustable characteristic of the transmission pulses for blocking the Oia regulated parts of the pulse power lamp and supplying power to the lamp; and

this lamp controller includes a sensor power level in the transmission path of the pulses of the lamp supply and regulator controlled by this sensor, to modify transmission characteristics of the pulses so as to maintain the apparent brightness of the lamp constant, irrespective of changes in the power consumed by the auxiliary device.

17. The power supply system according to clause 16, in which the specified sensor contains an integrator, connected to the input of the specified power scheme lamps.

18. The power supply system according to clause 16, in which the specified detector includes a rectifier placed between the specified phase dimmer and specified by the integrator.

19. The power supply system according to clause 16, in which the specified controller contains the specified solid state switching device for blocking portions of the pulses of power to the lamp.

20. The power supply system according to claim 19, in which the specified controller includes a pulse-width modulator for controlling the aforementioned switching device.

21. The power supply system according to claim 19, in which the specified controller includes a microprocessor for supplying control pulses on said switching device.

22. The block lamp for use with phase dimmer, the input pulse power tubes containing

an input for receiving pulses of power is any from the dimmer;

lamp load;

auxiliary loads having variable power consumption;

power supply auxiliary loads connected between the said input and auxiliary load; and

the lamp controller, connected between the said input and lamp load,

moreover, the lamp controller includes a solid state switching device in a transmission path of the pulses of power to the lamp.



 

Same patents:

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20 cl, 15 dwg, 1 tbl

FIELD: electrical engineering; starting and operating circuits for gas-discharge lamps.

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1 cl, 2 dwg

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7 cl, 1 dwg

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Voltage stabilizer // 2291475

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Voltage converter // 2290738

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1 cl, 4 dwg

FIELD: electric transport.

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2 dwg

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2 dwg

FIELD: electric engineering, possible use in electricity provision systems for stabilization of one-phased voltage of electric energy source of alternating current.

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2 dwg

Impulse stabilizer // 2282233

FIELD: radio engineering.

SUBSTANCE: impulse stabilizer contains serial adjusting p-n-p transistor, control block, LCD-filter, connected to output clamps of stabilizer and to collector of adjusting p-n-p transistor, first resistor, connected by one clamp to input clamp of stabilizer, by another clamp - to emitter of adjusting p-n-p transistor. Input clamp is connected to emitter of protective p-n-p transistor, collector of which is connected to base of adjusting p-n-p transistor and to first output of second resistor composite p-n-p transistor is connected, base of which is connected to inverse output of control block and to input clamp through third resistor. Collector of composite p-n-p transistor is connected to second output of second resistor, emitter of which is connected to power input of control block. Impulse stabilizer also contains germanium diode of Schottky diode, anode of which is connected to emitter of adjusting p-n-p transistor, and cathode - to base of protective p-n-p transistor, and through resistor - to power input of control block. Control input of control block is connected to first clamp of check connection resistor, connected by second output to output positive clamp of stabilizer. Collector of composite p-n-p transistor through resistor is connected to first output of check connection resistor.

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1 dwg

FIELD: systems for uniform distribution of reactive power between connected in parallel voltage sources.

SUBSTANCE: apparatus is designed for uniform distribution of reactive power between connected for parallel operation voltage sources having voltage regulators of those voltage sources with the same number of inlet terminals of each voltage regulator. Apparatus includes several groups of windings of differentiating induction measuring transducers (one for each voltage source); number of said groups is equal to number of inlet terminals of each voltage regulator. Each winding of any group is coupled inductively with one of load-current conductors of said power sources that are connected to inlet terminals of voltage regulators of said sources. Load current conductors which are inductively coupled with windings of the same group are connected between similar-polarity terminals of said voltage sources and one of common buses connected with load. Apparatus includes in addition (one for each group of windings) parallel-operation transformers. Each transformer is connected with windings only of one group and it has the same turn number in all windings. Primary windings of said transformers are connected to windings related to first (driving) power source having voltage regulator whose inlet terminals are connected to outlet terminals of said source. Each secondary winding of any transformer is connected between inlet terminal of voltage regulator of other (driven) voltage source and back end terminal of winding inductively coupled with current conductor of said source. Lead end terminal of said winding is connected to such outlet terminal of voltage source that is connected with said current conductor. Voltage sources with different nominal currents are used with windings whose mutual inductance with load electric current conductors have voltages inversely proportional to nominal currents of voltage sources.

EFFECT: improved quality parameters of produced electric energy.

2 cl, 1 dwg

FIELD: electrical engineering, namely stabilizers of AC voltage, possibly used in electric power supply systems for stabilizing three phase voltage of AC power sources.

SUBSTANCE: stabilizer includes three phase transformer 1, terminals 1, 2, 3 for connecting primary windings of transformer to three phase AC power source. Each secondary winding includes three branches 5, 8, 11 of lead terminals of windings, mean terminals 6, 9, 12 and back terminals 7,10,13 of secondary windings. Lead terminals 5, 8, 11 are connected one to other and to first inlet of power source 17. Mean terminals 6, 9, 12 and back terminals 7, 10, 13 of secondary windings are connected through voltage stabilizing units 14, 15, 16 with terminals 18, 19, 20 for connecting load of stabilizer. Outlet terminals of power source 17 are connected with voltage stabilizing units 14, 15, 16. Each voltage stabilizing unit includes first and second opto-symistors 21, 22; null-organ 23; saw tooth voltage generator 24; comparator 25; first and second pulse shapers 26, 27.

EFFECT: enhanced operational reliability and efficiency of three phase voltage stabilizer.

2 dwg

FIELD: electrical engineering; secondary power supplies.

SUBSTANCE: novelty consists in that load is connected to step-up transformer output in series with two parallel-interconnected coils of different inductance wound on one enclosed ferromagnetic core and that connected to higher-inductance coil is variable resistor adjusted by means of control unit whose input is connected to regulator output.

EFFECT: enhanced efficiency, reduced output voltage waveform curve distortion, and simplified circuit design which enhances operating reliability of device.

1 cl, 4 dwg

FIELD: electric engineering.

SUBSTANCE: in case of continuous grid voltage excess higher than acceptable level contacts of stabilizer overload protection relay disengage, disabling adjusting transformer. Power for microprocessor device for controlling stabilizer and for all relays is taken from additionally provided power source with independent low-power transformer, constantly connected to stabilizer input and not switching off during overloads. After stop of effect from grid voltage excess contacts of overload protection relay engage, and normal operation of stabilizer is continued. Power for stabilizer control microprocessor and for all relays automatically switches to operation from power source, connected to windings of adjusting transformer of stabilizer. In case of effect from short-time pulse overloads in the grid, fast protection circuit, on dischargers and varistors, switches to operation, which does not disrupt stabilizer operation mode. Power for all relays and control microprocessor is taken from rectifier connected to windings of adjusting transformer of stabilizer, without switching to continuous protection mode. At the beginning of stabilizer operation microprocessor sets necessary states of relay for providing given voltage at output, after that voltage from adjusting transformer is sent to stabilizer output.

EFFECT: lesser dimensions, simplified construction, higher reliability.

1 dwg

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