SU517121A1 - Electrical circuit regulator - Google Patents

Description

(54) ELECTRIC CIRCUIT REGULATOR

one

MsofjpeieiBie is related to power equipment, mainly electrophysical installations for poly5-1 and studying high-energy charged particles and creating strong MarHHTffijix fields. The power supply of such plants must be regulated in the ujHpOKOM range and with high accuracy at power supplies up to 100 MVA and more.

It is known a regush digging device for electrical circuits containing several sources of alternating current combined with controlled keys in a series circuit. The synchronous input of the device key control circuit, containing an analog-to-phased converter (A1Sh), is connected through a control unit with an external signal delay to the output of the clock generator. The grubl setting of the value of the input nc-pr-aJ a device is given by the HSMeiiCHiiH number of consecutive sources, and the exact one by adjusting the sync delay delay in the input signal: the difference between the input signal and the signal. On the ASH1. A disadvantage of the known device is connected with the discreteness of the adjustment characteristic of the signal: that control} g.

The proposed device eliminates the discreteness of the regulation characteristic due to the fact that in it the control input of the adjustable delay unit is connected to the main input of the control circuit of the switch through a signal pin, and the second input of this divider is connected to the ADC of the control circuit of the switch.

The drawing shows the scheme of the proposed controller. where 1 is a switch with controllable keys Kts ... KiN, Kj i, K. 2-synchronization input cxeMbf key management 3, 4 — adjustable delay block, 5 — generator of sound foils, 6 — control input of delay block 4, 7 signal divider, 8 - the first input of the divider 7, 9 the main input of the control circuit 3, 10 - the second ixoa divider 7,11-А1ДП of the control circuit 3, 12in .: - one ADC with triggers TI ... T | m, 13 inner; and n control circuit of the ADC, 14 - sawtooth generator, 15 - comparator, 16 - ADC generator, A, B - controller output terminals, Ci ... em - sources of alternating voltage, Hj, .. And |) coincidence circuits, F, ... Fj-j - forg.z1rovateli impulses control key Mil, V ,,,, - input signal, V, У .. „primary and

In ACII-iT

delayed sync pulses, V - sync pulse triggering the ADC,

With the help of controllable keys Kz I ... Kj, connections via the switch 1 with the variable sources wi ei ... are connected to a common serial circuit AB and are shunted in it with the keys K,, ... K,. A sync pulse generator 5 is connected to the synchronization input 2 of the control circuit 3 via a variable delay unit 4. The control input b of the delay block 4 is connected to the output of the signal divider 7, whose input is connected to the main input 9 of the control circuit 3. The input 10 of the divider 7 is connected to the output, The ATP 11, in particular, with the outputs of the trigger TI ... TM of the regastor 12. The outputs of the triggers of the register 12 are connected, in addition, through the matching circuits AND, ... with the formers Fj ... of the control pulses of the switch keys 1. The second inputs of the circuit coincidence Mi ... connected to syn input 2 of the control circuit 3. The input of the register 12 is connected to the output of the internal control circuit of the A / D converter 13, the second input of which is connected to the input of the comparator 15 via the sawtooth generator 14, the other input of which is connected to the input 9 of the control circuit 3. The output of the comparator 15 is connected to the input of the control circuit 13, to the second input of which the output of the pulse generator 16 is connected, and the third is connected to the clock pulse generator 5.

As yupochey K ,, ... K; . K ,, ... K, m can be used any controlled devices that provide switching of high-power alternating or alternating current circuits with sufficient speed, for example, triacs, thyristors or circuit connections of transistors. As sources of alternating current ei ... secondary transformer windings can be used, for example. The control circuit should be excluded (; | 1ena, the possibility of simultaneous opening of keys idunting the source or the winding and connecting the same source or the winding. The A / D converter 12 of the control circuit 3 can also be constructed using other circuits, for example, with feedback, including with comparison of analog values or codes, etc. The specific execution of the control circuit 3 is determined by the type of code used and the specific switch circuit. Blocks 4, 5, 7 can be higher than any known circuit, depending on the version of the ADC 12 input 10 divides l vsholnen 7 should be digital or analog.

The device works as follows. The clock pulse V Cc, through the control circuit 13, starts the generator of the saw-tooth voltage 14 and simultaneously opens the communication channel of the generator 16 to the input of the register 12. When the voltage at the generator output reaches 14,

the voltage V in, the comparator 15 outputs a pulse to the control circuit 13, the communication channel of the generator 16c by the register 12 is closed. The code from the triggers is fed to the inputs of the matching circuits AND and to the input 10 of the divider 7. The sync pulse V ci from the generator 5 comes at the moment of natural switching of the keys, to which the conversion of the V in signal to the digit ends and the input signal is fed to the control input 6 of the delay block 4 V in Dele1 on the value of the code p. Delayed sync V C2 is fed to the synchronization input 2 of circuit 3 and through the second inputs of the N ... circuit produces a code from the output of the ADC 11, providing through the drivers FI ..., switching sources ej ... using keys comm Ator. In this case, the output voltage is regulated discretely to the value of the voltage of one source by the number of connected sources, and smoothly due to the shift in

sync pulse time V cj. When the next sync pulse arrives, the operation of the device is repeated.

The maximum delay of the clock pulse V sa relative to V Ci is equal to the maximum duration of the valve X in this circuit. The minimum delay is zero and the field} D1 when the signal at control input 6 reaches the delay block 4 is equal to the maximum value of the input signal Vg divided by the maximum value of the maxmax code. Increasing the input signal and a corresponding increase in the code at the output of the ADC reduces the maximum delay of the sync pulse V Ca to the value X / n, where n is the current value of the code. The minimum delay remains zero for the adjustment characteristic of the device.

Claims (1)

Invention Formula An electrical circuit regulator containing several sources of alternating voltage, united by controlled keys in a series circuit, a key control circuit with an analog-digital converter, a clock generator, the output of which through a block is controlled by an external delay signal connected to the synchronization input of the control circuit, characterized in that, in order to eliminate the discreteness of the adjustment characteristic, the control input of the variable delay unit is connected to the main input of the circuit switch control through a signal divider, and the second input of this divider is connected to the analog-to-digital converter of the switch control circuit.