CN109407740A - Three-phase alternating current pressure stabilizing control method - Google Patents

Abstract

A kind of three-phase alternating current pressure stabilizing control method, by including compensation three-phase main circuit unit, compensation control unit, trigger unit, the three-phase AC voltage stabilizer of driving unit being protected to realize.Compensation control unit differentiates that the compensation control circuit of circuit forms including sampling comparison circuit, delay protection circuit, triggering gate control circuit, error detection by three; voltage sample is carried out to the AC power source phase voltage of three-phase respectively, exporting corresponding three-phase Trig control signal, three-phase, trigger region control signal, three-phase triggering gating controlling value do not differentiate signal；Protection driving unit differentiates whether signal effectively comes to carry out open-circuit-protection to the three-phase thyristor bridge in main circuit according to the three-phase triggering gating controlling value of input.Whether the pressure stabilizing control method also occurs logic error to carry out open-circuit-protection to thyristor bridge control circuit, effectively strengthens and occur abnormal protection for the three-phase pressure stabilizing course of work while realizing mutual lock control.

Description

Three-phase alternating current pressure stabilizing control method

Technical field

The present invention relates to power technique fields, especially a kind of three-phase alternating current pressure stabilizing control method.

Background technique

Existing compensation single-phase and three-phase AC voltage stabilizer, its advantage is that voltage stabilized range is wide, waveform almost without distortion, Overall efficiency is high, and workload-adaptability is strong.Its principle is the height situation according to input voltage, is automatically controlled on compensator transformer just The switching of the different winding coils of grade winding, using the no-load voltage ratio relationship of primary side Working winding and secondary windings, or passes through tune The alive mode of institute, provides the voltage compensation of two-way multi gear, to realize the purpose of voltage-regulation voltage-stabilization on whole armature winding.

The shortcoming of existing compensation type ac voltage stabilizer is: being changed using the movement of motor control carbon brush to compensation transformation When device magnet exciting coil applies different voltages, carbon brush is prone to wear, and is often broken down.Using electronic switch switching by the way of come into On the switching of the different winding coils of armature winding on row compensator transformer, or adjustment armature winding when institute's making alive, electronics Being delayed to turn off for switch be easy to cause power supply short circuit failure；Using the program mode (PM) control electronic switch switching of single-chip microcontroller, PLC etc. When, the problems such as program runs fast, crashes, will also result in voltage-stablizer failure, or cause power supply short circuit because of control logic mistake therefore Barrier.

Summary of the invention

In order to solve the problems of existing compensation type ac voltage stabilizer, the present invention provides a kind of three-phase alternating current pressure stabilizings Control method, comprising:

In each phase, the voltage of AC power source phase voltage waving interval range is divided into multiple voltage class sections to carry out Compensation control；The voltage class section of AC power source phase voltage is identified, trigger corresponding with voltage class section is obtained Gate controlling value；It is selected by diode triggered gating matrix according to triggering gating controlling value and has corresponding Trig control signal Effect controls the on-off assembled state of thyristor in thyristor bridge；Choosing is controlled by the on-off assembled state of thyristor in thyristor bridge 0 in the multiple compensator transformers of this phase 1 or multiple compensator transformers are selected to carry out voltage compensation, is realized Voltage compensation state corresponding with voltage class section；The corresponding compensation in each voltage class section of AC power source phase voltage The voltage compensation state of transformer.

In each phase, the fluctuation of AC power source phase voltage makes triggering gating controlling value change, and results in the need for changing brilliant lock In pipe bridge when the on-off assembled state of thyristor, between successive 2 kinds different on-off assembled states of thyristor in thyristor bridge, Maintain not trigger region time, all thyristors in cutoff thyristor bridge.

In each phase, whether triggering gating controlling value is effectively differentiated；When in maintaining not trigger region time State, or when triggering gating controlling value is invalid, cuts off the power supply of trigger circuit, stop the triggering arteries and veins for issuing the phase Punching.

In each phase, the trigger region time is not realized by not trigger region control signal for the maintenance one；Control not trigger region Control signal exports a pulse after triggering gating controlling value changes；Trigger region control signal is not in output pulse Period is effective, invalid during non-output pulse；When trigger region control signal is not effective, when maintaining one not trigger region Between.Further, after the triggering gating controlling value changes, the spaced time of pulse does not exist in trigger region control signal 10ms chooses between 30ms.

Three-phase triggering gating controlling value in, have one and more than one it is invalid when, control three-phase thyristor bridge be in open circuit Guard mode.

In each phase, triggering gating controlling value is M binary values；Differentiate the triggering gating whether effective foundation of controlling value It is in the position the M binary value of triggering gating controlling value, to have and when only one effective, it is effective that triggering gates controlling value；Otherwise, Triggering gating controlling value is invalid；Position in triggering gating controlling value is 1 effective, is 0 invalid, i.e. triggering gating controls in value signal High level it is effective, low level is invalid；Either, the position in triggering gating controlling value is 0 effective, is 1 invalid, i.e. triggering gating The low level controlled in value signal is effective, and high level is invalid；Shared M triggering gating controlling value is effective.The M be more than or equal to 2 integer.

In each phase, the Trig control signal for controlling thyristor bridge is generated by the triggering gating controlling value control postponed；Prolong The signal change moment of slow triggering gating controlling value is later than after triggering gating controlling value changes not trigger region control signal The forward position moment of middle pulse, and trigger region controls in signal after pulse earlier than triggering after gating controlling value changes Along the moment.

In each phase, if sharing N number of thyristor in thyristor bridge；Diode triggered gating matrix includes M root triggering gating Control alignment, N root triggering driving line and multiple diodes；M root triggering gating control alignment gates controlling value one with M triggerings One is corresponding, and an effective triggering gating controlling value is corresponding to keep a triggering gating control alignment signal effective；The triggering driving of N root Line and N number of thyristor correspond, and an effectively corresponding triggering for making a thyristor of triggering driving line signal controls letter Number effectively；Trig control signal effectively makes corresponding turn on thyristors；It is corresponding when every triggering gating control alignment signal is effective The on-off assembled state of thyristor in one thyristor bridge；In every triggering gating control alignment and effective alignment signal pair On-off assembled state is answered to need to control and be respectively provided with diode between the triggering driving line of turn on thyristors and be attached, when certain root When triggering gating control alignment signal is effective, have the triggering for needing to control turn on thyristors driving line signal by diode Effect.The N is the integer more than or equal to 4.

In each phase, the voltage class section of AC power source phase voltage is identified, obtain triggering gating controlling value by Comparison circuit is sampled to realize；Sampling comparison circuit includes voltage comparator electricity between AC power source phase voltage sample circuit and multi-region AC power source phase voltage RMS-DC converter is AC power source phase voltage sampled value by road, AC power source phase voltage sample circuit；It is more Section voltage comparator circuit is compared AC power source phase voltage sampled value with M-1 threshold voltage, obtains M triggering choosings Logical controlling value.

In each phase, voltage comparator circuit includes M-1 comparator between multi-region, and M-1 comparator is all made of original electricity Source power supply；M-1 different threshold voltages are respectively connected to the non-inverting input terminal of M-1 comparator, and AC power source phase voltage is adopted Sample value is connected to the inverting input terminal of M-1 comparator simultaneously；In M-1 comparator, the minimum comparator of threshold voltage is direct It is powered using positive single supply, other comparators are all made of controllable electric power and are powered；Comparator is powered using controllable electric power When, output is terminated with pull down resistor, only in all threshold voltages comparator lower than it all output low levels, controllable electric Source is powered to its positive power source terminal, and otherwise controllable electric power stops being powered to its positive power source terminal；Comparator uses controllable electric When source powers and controllable electric power stops being powered to its positive power source terminal, low level is exported；M triggering gating controlling values are by M-1 The output valve and highest section judgment value of a comparator form；When all low levels of the output valve of M-1 comparator, highest Interval judgement value is high level, and otherwise, highest section judgment value is low level.Comparator between multi-region in voltage comparator circuit Preferably using the rail-to-rail amplifier of low-power consumption of single supply power supply.

In each phase, triggering gating controlling value is postponed, and generates the function of not trigger region control signal by prolonging When protection circuit realize；Differentiate that circuit is realized by error detection to whether triggering gating controlling value is effectively differentiated, error detection differentiates electricity Road differentiates whether the triggering gating controlling value after delay is effective, and output triggering gating controlling value differentiates signal.

The three-phase alternating current pressure stabilizing control method is by including compensation three-phase main circuit unit, compensation control unit, triggering Unit protects the three-phase AC voltage stabilizer of driving unit to realize.Every phase main circuit of compensation three-phase main circuit unit includes Compensator transformer group, thyristor bridge and relay protection switch；Control unit output three-phase Trig control signal is compensated to triggering Unit；Trigger unit issues trigger signal to compensation three-phase main circuit unit, control three according to the Trig control signal of input The on-off of thyristor in phase thyristor bridge；Compensation control unit exports three-phase not trigger region control signal and three-phase triggering choosing simultaneously Logical controlling value differentiates signal to driving unit is protected, and protection driving unit differentiates letter according to the three-phase triggering gating controlling value of input Number whether effectively stop/starting the open-circuit-protection to three-phase thyristor bridge, while triggering gating controlling value according to three-phase and differentiate Signal whether effectively and three-phase not trigger region control signal whether the power supply effectively to control trigger unit.Three-phase thyristor Thyristor in bridge is the thyristor alternating-current switch that thyristor or 2 unidirectional thyristor reverse parallel connections are formed.

Compensation control unit is made of the identical compensation control circuit of three structures；Three compensation control circuits are respectively to three Phase AC power source phase voltage carries out voltage sample, and trigger region control signal, three do not touch for output three-phase Trig control signal, three-phase Hair gating controlling value differentiates signal.

The compensation control circuit of each phase include function sampling comparison circuit identical with structure, delay protection circuit, Gate control circuit, error detection differentiation circuit are triggered, the delay protection circuit function of each phase is identical as structure, the sampling of each phase Comparison circuit function is identical as structure, and the triggering gate control circuit function of each phase is identical as structure, and the error detection of each phase is sentenced Other circuit function is identical as structure.

In each phase, triggering gate control circuit includes diode triggered gating matrix；A piece triggering drives line signal Effectively correspondence makes the effective method of the Trig control signal of a thyristor be, N root triggering driving line signal corresponds straight Connect the Trig control signal as N number of thyristor；A piece effectively corresponding triggering for making a thyristor of triggering driving line signal Control the effective method of signal either, the triggering gate control circuit further includes Trig control signal driving circuit；Triggering The input for controlling signal drive circuit is the signal of N root triggering driving line, is exported as the triggering of one-to-one N number of thyristor Control signal.

Protection driving unit differentiates whether signal effectively stops/starting pair according to the three-phase triggering gating controlling value of input The specific method of the open-circuit-protection of three-phase thyristor bridge is to differentiate in signal there is one and one when three-phase triggers gating controlling value When above invalid, control disconnects all upper bridge arms of three-phase thyristor bridge to make three-phase thyristor bridge be in open-circuit-protection state Under, or all lower bridge arms of disconnection three-phase thyristor bridge are controlled be in three-phase thyristor bridge under open-circuit-protection state. Three-phase thyristor bridge is under open-circuit-protection state, when three-phase triggering gating controlling value differentiates that signal full recovery is effective, is protected Shield driving unit is automatically stopped the open-circuit-protection state of three-phase thyristor bridge.

Protect driving unit according to three-phase triggering gating controlling value differentiate signal whether effectively and three-phase not trigger region control Whether the specific method effectively to control the power supply of trigger unit is signal, differentiates signal when three-phase triggers gating controlling value In have one and more than one it is invalid when, control break trigger unit in all three-phase trigger circuits power supply；When three-phase triggers When gating controlling value and differentiating that signal is all effective, in each phase, trigger region control signal is not effectively then same in break trigger unit Otherwise the power supply of phase trigger circuit connects the power supply in trigger unit with phase trigger circuit, work normally with phase trigger circuit, Trig control signal according to input issues trigger pulse.

Thyristor in three-phase thyristor bridge is that bidirectional thyristor or 2 unidirectional thyristor reverse parallel connections are formed Thyristor alternating-current switch.

The beneficial effects of the present invention are: three intersections for carrying out voltage compensation using compensator transformer group and thyristor bridge It flows pressure stabilizing control method and controlling value is gated using an only effective, different triggering, it is real by diode triggered gating matrix Show to the control of the gating of every phase thyristor bridge various combination on off operating mode, and ensure that on the same full-bridge circuit of thyristor bridge Lower bridge arm thyristor cannot simultaneously turn on, that is, realize the mutual lock control of same full-bridge circuit upper and lower bridge arm thyristor.It is same herein When, mistake occurs when also identifying to the voltage class section for carrying out AC power source phase voltage, causes to output invalid triggering choosing The case where logical controlling value, stops issuing trigger pulse and carries out the open-circuit-protection of three-phase thyristor bridge, effectively strengthens described Control method is directed to the protection of three-phase alternating current pressure stabilizing course of work exception；Open-circuit-protection state is in three-phase thyristor bridge When, if three-phase triggering gating controlling value full recovery be it is effective, the open-circuit-protection of three-phase thyristor bridge can be automatically stopped State simultaneously makes it be in compensation work state again.Three-phase alternating current pressure stabilizing control method does not use the program side of single-chip microcontroller, PLC etc. Formula controls the switching switching of thyristor, avoids voltage-stablizer failure caused by the problems such as program runs fast, crashes.

Detailed description of the invention

Fig. 1 is the three-phase AC voltage stabilizer composition block diagram for realizing AC voltage-stabilizing control method；

Fig. 2 is the composition block diagram of A phase compensation control circuit；

Fig. 3 is the A phase main circuit in compensation three-phase main circuit unit embodiment 1；

Fig. 4 is the A phase main circuit in compensation three-phase main circuit unit embodiment 2；

Fig. 5 is that comparison circuit embodiment 1 is sampled in A phase compensation control circuit；

Fig. 6 is that comparison circuit embodiment 2 is sampled in A phase compensation control circuit；

Fig. 7 is that A phase delay protects circuit embodiments block diagram；

Fig. 8 is the delay detection circuit embodiment 1 for triggering gating control value signal Y11 in delay detection module needle to A phase；

Fig. 9 is the delay detection circuit embodiment 2 for triggering gating control value signal Y11 in delay detection module needle to A phase；

Figure 10 is the delay detection circuit embodiment for triggering gating control value signal Y11 in delay detection module needle to A phase 3；

Figure 11 is that trigger region does not control signal generator module embodiment to A phase；

Figure 12 is that A phase delay protects split-phase in the middle part of circuit to close waveform diagram；

Figure 13 is the trigger circuit embodiment that bidirectional thyristor SR1 in A phase main circuit is triggered in trigger unit；

Figure 14 is that A phase triggers gate control circuit embodiment 1；

Figure 15 is that A phase triggers gate control circuit embodiment 2；

Figure 16 is that A phase triggers gate control circuit embodiment 3；

Figure 17 is that the error detection of A phase differentiates circuit embodiments；

Figure 18 is protection drive unit embodiment.

Specific embodiment

Below in conjunction with attached drawing, the invention will be further described.

Fig. 1 realizes that the three-phase AC voltage stabilizer composition block diagram of AC voltage-stabilizing control method, compensation control unit export three-phase Trig control signal P5 to trigger unit, three-phase Trig control signal P5 by A phase, B phase, C phase Trig control signal P5A, P5B, P5C composition；Trigger unit issues three-phase trigger signal P6 to the main electricity of compensation three-phase according to the three-phase Trig control signal of input Road unit controls the on-off of bidirectional thyristor in A, B, C three-phase main circuit thyristor bridge.Compensation control unit exports three-phase simultaneously Trigger region control signal P4 and three-phase triggering gating controlling value do not differentiate signal P7 to protecting driving unit, three-phase not trigger region control Signal P4 processed includes A phase, B phase, C phase not trigger region control signal P4A, P4B, P4C, and three-phase triggering gating controlling value differentiates signal P7 includes that A phase, B phase, C phase A phase triggers gating controlling value differentiation signal P7A, P7B, P7C；Protect driving unit according to input Three-phase triggering gating controlling value differentiates whether signal effectively stops/starting the open-circuit-protection to three-phase thyristor bridge, while according to According to three-phase trigger gating controlling value differentiate signal whether effectively and three-phase not trigger region control signal whether effectively come control trigger The power supply of unit.

Compensation control unit is made of the compensation control circuit of A, B, C three-phase, and Fig. 2 is the composition of A phase compensation control circuit Block diagram, sampling comparison circuit carry out voltage sample to A phase AC power source phase voltage, and output A phase triggers gating controlling value P2A；Prolong When protection circuit input A phase trigger gating controlling value P2A, output delay after A phase trigger gating controlling value P3A and A phase do not touch It sends out area and controls signal P4A；A phase after triggering gate control circuit input delay triggers gating controlling value P3A, and output A phase triggers Control signal P5A；Error detection differentiates that circuit differentiates that the A phase of input triggers whether gating controlling value P3A is effective, and output A phase triggers choosing Logical controlling value differentiates signal P7A.B phase, the structure of C phase compensation control circuit, function, control logic are identical as A phase, respectively to B Phase AC power source phase voltage, C phase AC power source phase voltage carry out voltage sample and control, export B phase, C phase Trig control signal P5B, P5C, trigger region does not control signal P4B, P4C and B phase, C phase A phase triggers gating controlling value differentiation signal P7B for B phase, C phase, P7C。

Fig. 3 is the A phase main circuit in compensation three-phase main circuit unit embodiment 1, and compensator transformer TB1, TB2 form A Phase compensator transformer group, 6 bidirectional thyristor SR1-SR6 collectively constitute A phase thyristor bridge, fuse FU1 and relay normally open Switch KA-1, KA-2, KA-3, relay normally closed switch KA-5, KA-6 form A phase relay and protect circuit.

In Fig. 3, the bucking coil of compensator transformer TB1, TB2 are connected in the phase line of A phase, and phase line input terminal is L1A, Output end is L2A.Voltage on TB1, TB2 magnet exciting coil is controlled by A phase thyristor bridge.1 thyristor full-bridge circuit include it is upper, It is complete to be connected to the thyristor that SR1 and SR2 is formed in Fig. 3, after one end of TB1, TB2 magnet exciting coil is in parallel for lower 2 thyrister bridge arms Bridge circuit, the other end of TB1, TB2 magnet exciting coil are respectively connected to the thyristor full-bridge electricity of SR3 and SR4, SR5 and SR6 composition Road.If the offset voltage of TB1, TB2 is not identical, the compensation way that offset voltage is cancelled out each other is not considered, then A phase compensator transformer Group includes that 6 kinds of voltages such as positive TB1, forward direction TB2, forward direction TB1+TB2, reversed TB1, reversed TB2, reversed TB1+TB2 are mended altogether Repay state, 0 voltage compensation state when a kind of additional input voltage is within normal range (NR), the A phase of phase line input terminal L1A input AC power source phase voltage can at most be divided into 7 voltage ranges and compensate control.In Fig. 3, N is zero curve, and G11A, G12A are extremely G61A, G62A are respectively the trigger signal input terminal of bidirectional thyristor SR1 to SR6.

Fig. 4 is the A phase main circuit in compensation three-phase main circuit unit embodiment 2, compensator transformer TB1, TB2, TB3 group At A phase compensator transformer group, 8 bidirectional thyristor SR1-SR8 collectively constitute A phase thyristor bridge, and fuse FU1 and relay are normal Switch KA-1, KA-2, KA-3, KA-4, relay normally closed switch KA-4, KA-5, KA-6 form A phase relay and protect circuit.

In Fig. 4, the bucking coil of compensator transformer TB1, TB2, TB3 are connected in the phase line of A phase, and phase line input terminal is L1A, output end L2A.Voltage on TB1, TB2, TB3 magnet exciting coil is controlled by A phase thyristor bridge, TB1, TB2, TB3 excitation Be connected to the thyristor full-bridge circuit of SR1 and SR2 composition after one end of coil is in parallel, TB1, TB2, TB3 magnet exciting coil it is another End is respectively connected to the thyristor full-bridge circuit of SR3 and SR4, SR5 and SR6, SR7 and SR8 composition.If the benefit of TB1, TB2, TB3 It repays voltage to be all different, does not consider the compensation way that offset voltage is cancelled out each other, then the at most shared forward direction of A phase compensator transformer group 7 kinds, reversed 7 kinds, totally 14 kinds of voltage compensation states, 0 voltage compensation shape when a kind of additional input voltage is within normal range (NR) State, the AC power source phase voltage of phase line input terminal L1A input can at most be divided into 15 voltage ranges and compensate control.Figure In 4, N is zero curve, and G11A, G12A to G81A, G82A are respectively the trigger signal input terminal of bidirectional thyristor SR1 to SR8.

Each bidirectional thyristor in Fig. 3, Fig. 4 can be substituted with the unidirectional thyristor of 2 reverse parallel connections.Fig. 3, Fig. 4 In, relay normally open switch and relay normally closed switch composition relay protection switch.

Compensation three-phase main circuit unit is three-phase four-line system, and the main circuit of A, B, C three-phase uses identical circuit Structure and form respectively compensate the phase voltage of A, B, C phase, i.e., B, C two-phase use with A phase main circuit identical circuit knot Structure and compensation way respectively compensate the phase voltage of B, C phase.

Fig. 5 is that comparison circuit embodiment 1 is sampled in A phase compensation control circuit, real for compensation three-phase main circuit unit It applies example 1 and compensates control.The voltage of A phase AC power source phase voltage waving interval range is divided into M voltage class section, A Mutually sampling comparison circuit carries out voltage sample to A phase AC power source phase voltage and obtains A phase AC power source phase voltage sampled value, by M A comparator is compared A phase AC power source phase voltage sampled value, and the A phase that output M-bit binary number is constituted triggers gating control Value processed；When A phase AC power source phase voltage is in one in M voltage class section, M A phases are triggered in gating controlling value Corresponding one effectively, other positions are invalid.The significance bit that M A phases trigger gating controlling value is high level, i.e. binary one；In vain Position is low level, i.e. Binary Zero；Either, it is low level, i.e. Binary Zero that M A phases, which trigger the significance bit of gating controlling value,；Nothing Effect position is high level, i.e. binary one.

In the AC power source phase voltage sample circuit of Fig. 5, from the A phase AC power source phase of A phase phase line L1A and zero curve N input After transformer TV decompression, the rectifier bridge being made of diode DV1-DV4 rectifies voltage, then filters through capacitor CV1 and resistance RV1, RV2 partial pressure obtain mutually electric with the A phase AC power source of the A phase AC power source phase voltage virtual value direct proportionality of input Press sampled value U1.

Between the multi-region of Fig. 5 in voltage comparator circuit, resistance RF1-RF8 forms bleeder circuit, divides to power supply+VCC1 Afterwards, 7 threshold voltage UF1-UF7 are obtained.7 comparator FA1-FA7 realize A phase AC power source phase voltage sampled value U1 and 7 The comparison of threshold voltage UF1-UF7, the A phase of output trigger gating controlling value P2A by the output Y11- of 7 comparator FA1-FA7 Y17 composition, is divided into 7 voltage class section 1-7 for the voltage of A phase AC power source phase voltage waving interval range.Amplifier FA0 group At follower, A phase AC power source phase voltage sampled value U1 is sent simultaneously after follower FA0 driving to comparator FA1-FA7's Inverting input terminal；A phase AC power source phase voltage sampled value U1 can also drive without follower FA0 and directly send simultaneously to comparator The inverting input terminal of FA1-FA7；7 threshold voltage UF1-UF7 are sent respectively to the non-inverting input terminal of comparator FA1-FA7.Fig. 5 In, power supply+VCC1 can also be replaced with other precision voltage sources, bleeder circuit divides precision voltage source, can make threshold value Voltage is more accurate.Amplifier FA0 and comparator FA1-FA7 is preferably using the rail-to-rail amplifier of low-power consumption single supply power supply, example Such as, the quiescent operations such as OPA317, AD8517, MCP6291, TLV2450, TLV2451, TLV2460, TLV2461 power supply electricity is selected Stream is less than the rail-to-rail amplifier of single channel of 1mA.

In Fig. 5, nor gate FH2-FH7 forms the controllable power supply of comparator FA2-FA7, i.e. comparator FA2-FA7's The power supply control by output Y11-Y16 respectively；Resistance RB2-RB7 is respectively the pull down resistor for exporting Y12-Y17, works as phase The power supply for answering comparator is to draw level for low level when output is high-impedance state close to 0V.The power supply of comparator FA1 Power supply is connected to power supply+VCC1, is in normal operating conditions, and output Y11 controls the power supply of comparator FA2-FA7 simultaneously.Example Such as, when the A phase AC power source phase voltage of input is low, when a minimum voltage class section 1 in 7 voltage class sections, Y11 exports high level, and all output is low level to nor gate FH2-FH7, and the single supply power supply of comparator FA2-FA7 is whole To approach 0V, output is close to 0V either high-impedance state, and resistance RB2-RB7 respectively draws output Y12-Y17 for low level.When For the A phase AC power source phase voltage of input not at a minimum voltage class section 1 in 7 voltage class sections, Y11 output is low Level, nor gate FH2 exports high level and provides power supply to comparator FA2, at this point, if the A phase AC power source phase of input When voltage is in voltage class section 2, Y12 exports high level, and all output is low level, comparator to nor gate FH3-FH7 The single supply power supply of FA3-FA7 is all close to 0V, and output is close to 0V either high-impedance state, and resistance RB3-RB7 divides Output Y13-Y17 is not drawn as low level.When the A phase AC power source phase voltage of input is higher than voltage class section 2, Y11, Y12 exports low level, and nor gate FH2, FH3 export high level, provides power supply to comparator FA2, FA3 respectively, this When, if the A phase AC power source phase voltage of input is in voltage class section 3, Y13 exports high level, nor gate FH4-FH7 All output is low level, and the single supply power supply of comparator FA4-FA7 is all close to 0V, output be close to 0V or It is high-impedance state, resistance RB4-RB7 respectively draws output Y14-Y17 for low level.The rest may be inferred, when the A phase AC power source of input When phase voltage is in voltage class section 4, Y14 exports high level, other outputs are low level；When the A phase AC power source of input When phase voltage is in voltage class section 5, Y15 exports high level, other outputs are low level；When the A phase AC power source of input When phase voltage is in voltage class section 6, Y16 exports high level, other outputs are low level；When the A phase AC power source of input When phase voltage is in voltage class section 7, Y17 exports high level, other outputs are low level.Nor gate FH2-FH7 selection When 74HC series of high speed CMOS gate circuit, for example, selection 8 inputs nor gate 74HC4078, three tunnels 3 input nor gate 74HC27, When four tunnels 2 input nor gate 74HC02 etc. or 74HC series of high speed CMOS or door add NOT gate to realize nor gate function, due to The high level driving current of 74HC series of high speed CMOS can reach 4mA, drive quiescent operation source current less than 1mA's enough The rail-to-rail amplifier of single channel.The power supply of nor gate FH1-FH6 is power supply+VCC1.

If the A phase AC power source phase voltage fluctuation range of input is 220V ± 10%, it is desirable that stablized in 220V ± 2% In the range of export.Comparing unit embodiment 1 is sampled using Fig. 5, input can be divided into 242V to the voltage between 198V Section voltage swing is 7 voltage class sections of 6.4V, and the voltage in 3 voltage class sections therein is higher than desired output Voltage range needs to carry out drop compensation；The voltage in 3 voltage class sections lower than require output voltage range, need into Row boosting compensation；1 voltage class section carries out 0 voltage compensation, i.e. uncompensation within desired output voltage range. The voltage range of 6.4V is not more than 220V ± 1.5%, meets requirement of the output control within 220V ± 2%；7 electricity of 6.4V Pressing the corresponding AC supply voltage waving interval of grade interval is 242.4V to 197.6V, covers the range actually fluctuated.It adopts It is compensated with the compensation three-phase main circuit unit embodiment 1 of Fig. 3, and TB1 offset voltage is low, TB2 offset voltage is high；TB2's Offset voltage is 2 times of TB1 offset voltage, then when voltage is alternating current 220V on magnet exciting coil at this time, TB1 offset voltage is 6.4V, TB2 offset voltage are 12.8V.The selection and A phase AC power source phase voltage sampled value U1 and A phase of threshold voltage UF1-UF7 Ratio between AC power source phase voltage is related；If A phase AC power source phase voltage sampled value U1 and A phase AC power source phase voltage it Between ratio be 0.01, i.e. A phase AC power source phase voltage sampled value U1 be A phase AC power source phase voltage virtual value 1%, input It is 2.42V to 1.98V in 242V to the corresponding phase voltage sampled value range of phase voltage between 198V；By A phase AC power source phase Voltage be divided into section voltage swing be 6.4V 7 voltage class sections when, 7 threshold voltage UF7-UF1 be respectively 2.424V, 2.36V, 2.296V, 2.232V, 2.168V, 2.104V, 2.04V divide into 7 with by 242.4V to 197.6V range of voltages respectively The voltage sample value of a voltage class section upper limit value is corresponding；It, can be with according to the size of 7 threshold voltage UF1-UF7 and+VCC1 Calculate the size of resistance RF1-RF8.

Since the compensation way of compensation main circuit embodiment 1 has Schmidt's characteristic, comparator FA1 to comparator automatically FA7 does not form Schmidt's comparator.The triggering gating controlling value high level of Fig. 5 output is effective；In the defeated of comparator FA1-FA7 Outlet increases level-one phase inverter, then it is effective that the triggering gating controlling value exported becomes low level.

In the sampling comparing unit embodiment 1 of Fig. 5, when the A phase AC power source phase voltage of input is lower than minimum voltage levels When interval range, output signal corresponding with minimum voltage levels section is effective in the triggering gating controlling value of output, that is, exports It is effective for Y11；Main circuit is in minimum voltage levels section according to the A phase AC power source phase voltage of input and carries out accordingly at this time Voltage step-down compensation.When the A phase AC power source phase voltage of input is higher than maximum voltage grade interval range, the triggering choosing of output All signals are invalid in logical controlling value, and main circuit is without voltage compensation at this time.If the sampling comparing unit for removing Fig. 5 is real The comparator FA7 in example 1 is applied, 6 threshold voltage UF6-UF1 of comparator FA6-FA1 are constant, are and separate 7 voltage class The intermediate dividing voltage value of 6 of the corresponding phase voltage sampled value of the AC power source phase voltage value in section；Directly by nor gate FH7 Output signal, i.e. highest section judgment value Y17-1 as triggering gating controlling value in Y17, then when the A phase alternating current of input When source phase voltage is at or above maximum voltage grade interval range, be Y17 output effectively, main circuit according to input A Phase AC power source phase voltage is in maximum voltage grade interval and carries out corresponding voltage step-down compensation.

The embodiment 1 of Fig. 5 can also be carried out for compensation three-phase main circuit unit embodiment 2, at this time, it may be necessary to by A phase The voltage of AC power source phase voltage waving interval range is divided into more voltage class sections.For example, A phase AC power source is mutually electric When the voltage of pressure waving interval range is divided into 15 voltage class sections, the circuit of Fig. 5 should extend to 15 comparators, with 15 A threshold voltage of different sizes is compared；Either use 14 comparators, with 14 threshold voltages of different sizes into Row compares；The triggering gating controlling value P2A of output will be by 15, for example, Y11-Y115 is formed.

The A phase of Fig. 5 samples comparison circuit embodiment 1 either for going back to compensation three-phase main circuit unit embodiment 1 It is that control is compensated to compensation three-phase main circuit unit embodiment 2, B phase, C phase are all made of identical with A phase structure, function Sample comparison circuit；A, the threshold voltage in B, C three-phase sampling comparison circuit, can be provided by the same bleeder circuit, can also To be provided by respective bleeder circuit.

Fig. 6 is that comparison circuit embodiment 2 is sampled in A phase compensation control circuit, real for compensation three-phase main circuit unit It applies example 2 and compensates control.In Fig. 6, FD1 is that real available value detects device LTC1966, LTC1966 and transformer TV1, capacitor CV2, capacitor CV3 constitute AC power source phase voltage sample circuit, to the A phase AC power source inputted from A phase phase line L1A and zero curve N Phase voltage virtual value measures, and obtains AC power source phase voltage sampled value U2.UIN1, UIN2 of LTC1966 is alternating voltage Differential input end, USS are the negative supply input terminal that can be grounded, and UDD is positive power input, and GND is ground terminal, and EN is low level Effectively enabled control signal, UOUT are voltage output end, and COM is output voltage return terminal.

In Fig. 6, voltage comparator circuit between FD2, resistance RD1, resistance RD2, phase inverter FB1-FB10 composition multi-region；FD2 Compare display driver LM3914 for 10 grades, the internal voltage divider circuit that inside is together in series containing 10 1k Ω precision resistances is formed 10 comparative threshold voltages are respectively connected to the positive input terminal of internal 10 comparators, by A phase AC power source phase voltage wave zone Between the voltage of range be divided into 10 voltage class section 1-10.6 feet are that internal voltage divider circuit is high-end, are connected to 7 feet through resistance RD1 Internal standard power supply export VREF；4 feet are internal voltage divider circuit low side, are connected to the ground through resistance RD2；8 feet are internal standard Power supply low side, is connected to the ground；2 feet are negative power end, are connected to the ground；3 feet are positive power source terminal, are connected to power supply+VCC1；5 feet are Signal input part is connected to A phase AC power source phase voltage sampled value U2, is connected internally to the negative input end of 10 comparators； The 10-18 foot of LM3914, the output of 1 foot signal L10 to L1 be with the output of 10 comparators as a result, wherein threshold compared with L10 Threshold voltage highest, successively reduces, and L1 comparative threshold voltage is minimum；The equal low level of L1 to L10 is effective；The scheme control end of 9 feet is outstanding Sky, realizes the dotted output of L1 to L10, i.e., single low level output is effective.In Fig. 6, internal voltage divider circuit is high-end can also be through Resistance RD1 is connected to other power supplys, for example, power supply+VCC1.

In Fig. 6,10 phase inverter FB1-FB10 for carrying out reverse phase respectively to output signal L1-L10, obtain 10 two into Y11-Y110 processed is formed, the effective A phase of high level triggers gating controlling value P2A.A phase AC power source phase voltage is in 10 electricity When pressing one in grade interval 1-10, corresponding one is high level in Y11-Y110, other positions are low level.For example, working as When the A phase AC power source phase voltage of input is in voltage class section 10, Y110 exports high level, other outputs are low level； When the A phase AC power source phase voltage of input is in voltage class section 9, Y19 exports high level, other outputs are low level； When the A phase AC power source phase voltage of input is in voltage class section 5, Y15 exports high level, other outputs are low level； When the A phase AC power source phase voltage of input is in voltage class section 1, Y11 exports high level, other outputs are low level. Cancelling the phase inverter FB1-FB10 in Fig. 5 directly uses output signal L1-L10 to trigger gating controlling value Y11-Y110 as A phase When, it is effective that A phase triggers gating controlling value low level.Phase inverter FB1-FB10 is all made of power supply+VCC1 power supply.

10 comparators inside LM3914 in 10 comparators have been used in Fig. 6, and A phase AC power source phase voltage has been compared Divide into 10 voltage class sections.If A phase AC power source phase voltage fluctuation range is 220V+10% to 220V-20%, it is desirable that Stablized and is exported in the range of 220V ± 2%.Using the sampling comparison circuit embodiment 2 of Fig. 6, will input 242V extremely Voltage between 176V is divided into 10 voltage class sections that section voltage swing is 7V, 3 voltage class sections therein Voltage is higher than desired output voltage range, needs to carry out drop compensation；The voltage in 6 voltage class sections is defeated lower than what is required Voltage range out needs to carry out boosting compensation；1 voltage class section carries out 0 voltage within desired output voltage range Compensation, i.e. uncompensation.The voltage range of 7V is 220V ± 1.6%, meets requirement of the output control within 220V ± 2%, 7V 10 voltage class sections corresponding AC supply voltage waving intervals be 244.5V to 174.5V, cover and actually fluctuate Range.It is compensated using the A phase main circuit in the compensation three-phase main circuit unit embodiment 2 of Fig. 4, and TB1 offset voltage is most It is low, TB3 offset voltage highest；The offset voltage of TB2 is 2 times of TB1 offset voltage, and the offset voltage of TB3 is TB2 offset voltage 2 times, then at this time on magnet exciting coil voltage be alternating current 220V when, TB1 offset voltage be 7V, TB2 offset voltage be 14V, TB3 mend Repaying voltage is 28V.Between the selection and A phase AC power source phase voltage sampled value U2 and A phase AC power source phase voltage of threshold voltage Ratio it is related；If the ratio between A phase AC power source phase voltage sampled value U2 and A phase AC power source phase voltage is 0.005, i.e., A phase AC power source phase voltage sampled value U2 be A phase AC power source phase voltage virtual value 0.5%, input 242V to 176V it Between the corresponding phase voltage sampled value range of phase voltage be 1.21V to 0.88V；A phase AC power source phase voltage is then divided into section Voltage swing be 7V 10 voltage class sections 10 threshold voltages be respectively 1.1875V, 1.1525V, 1.1175V, 1.0825V, 1.0475V, 1.0125V, 0.9775V, 0.9425V, 0.9075V, 0.8725V, respectively with by 244.5V extremely The voltage sample value that 174.5V range of voltages divides into the lower limit value in 10 voltage class sections is corresponding；Internal voltage divider circuit is high-end Voltage be connected to highest comparator positive input terminal, therefore 6 foot voltages are 1.1875V.According to 10 threshold voltages and internal standard Power supply exports the size of VREF (1.2V or 1.25V), can calculate the size of resistance RD1, RD2.If it is required that improving electricity Press the fluctuation range of the precision either input voltage of compensation bigger, it is desirable that the A phase of Fig. 6 samples comparison circuit embodiment 2 will be electric When pressure grade distinction is more voltage class sections, for example, it is desired to by the electricity of A phase AC power source phase voltage waving interval range When pressure are divided into 15 voltage class sections, 2 LM3914 can be used and realize, the internal voltage divider circuit in 2 LM3914 is connected, 20 comparative threshold voltages are formed, 20 grades of comparator circuits are constituted；15 grades therein are selected to compare output, the A phase of output triggers Gating controlling value will be by 15, for example, Y11-Y115 is formed.

In the sampling comparison circuit embodiment 2 of Fig. 6, when the A phase AC power source phase voltage of input exceeds maximum voltage grade When interval range, it is that output signal corresponding with maximum voltage grade interval is effective that the A phase of output, which triggers gating controlling value, i.e., defeated Effective for Y110 out, main circuit is in maximum voltage grade interval according to A phase AC power source phase voltage and carries out corresponding voltage drop Pressure compensation.When the A phase AC power source phase voltage of input is lower than minimum voltage levels interval range, the A phase of output triggers gating All signals are invalid in controlling value, and main circuit is without voltage compensation at this time.

10 comparators inside LM3914 in 10 comparators have been used in Fig. 6, and A phase AC power source phase voltage has been compared Divide into 10 voltage class sections.A phase can be exchanged only with 9 comparators in the comparator of the inside LM3914 10 Power supply phase voltage relatively divides into 10 voltage class sections；For example, the comparative threshold voltage of each comparator does not change, 9 ratios It is that phase voltage corresponding with the AC power source phase voltage value in 10 voltage class sections is separated is adopted compared with the comparative threshold voltage of device The intermediate dividing voltage value of 9 of sample value；Without being used as A phase to trigger in gating controlling value after the output L1 reverse phase of LM3914 in Fig. 6 Y11, Y11 selection by A phase trigger gating controlling value in Y12-Y110 control generate, i.e., when Y12-Y110 is all invalid, make Y11 is effective, otherwise, keeps Y11 invalid；At this point, when the A phase AC power source phase voltage of input is in or exceeds maximum voltage grade When interval range, it is that Y110 is effective that the A phase of output, which triggers gating controlling value, and main circuit is according to A phase AC power source phase voltage Maximum voltage grade interval carries out corresponding voltage step-down compensation；When the A phase AC power source phase voltage of input is at or below It is that Y11 output is effective, and main circuit is according to the A phase AC power source phase voltage of input when minimum voltage levels interval range Minimum voltage levels section carries out corresponding boost in voltage compensation.

The A phase of Fig. 6 sample comparison circuit embodiment 2 can be used for compensation three-phase main circuit unit embodiment 1 into Row compensation control, only need to divide into no more than 7 electricity for the voltage of the AC power source phase voltage waving interval range of input at this time Grade interval is pressed, the comparison wherein no more than 7 grades is selected to export.

The A phase of Fig. 6 samples comparison circuit embodiment 2 either for going back to compensation three-phase main circuit unit embodiment 1 It is that control is compensated to compensation three-phase main circuit unit embodiment 2, B phase, C phase are all made of identical with A phase structure, function Sample comparison circuit.

In addition to the A phase of Fig. 5 or Fig. 6 samples comparison circuit embodiment, for compensation three-phase main circuit unit embodiment 1 Either embodiment 2 compensates control, and the sampling comparison circuit of three-phase is also an option that other AC power source phase voltages are adopted Sample circuit and comparison circuit realize function required by sampling comparison circuit.The output of Fig. 5 AC power source phase voltage sample circuit AC power source phase voltage sampled value U1, can send to voltage comparator circuit between the multi-region of Fig. 6 and be compared, output triggering gating Controlling value；The AC supply voltage sampled value U2 of Fig. 6 AC supply voltage sample circuit output, can send between the multi-region of Fig. 5 Voltage comparator circuit is compared, output triggering gating controlling value.

Fig. 7 is that A phase delay protects circuit embodiments block diagram, wherein delay detection module YC1 is respectively to the position the M A phase of input Triggering gating controlling value Y11-Y1M carries out the A phase after signal delay is postponed and triggers gating controlling value Y21-Y2M, Y21-Y2M Form P3A；YC1 module carries out Edge check to M Y11-Y1M signals respectively simultaneously and obtains M Edge check signal Y31- Y3M；Trigger region does not control signal generator module YC2 and the Edge check signal Y31-Y3M of input is converted to the not trigger region control of A phase Signal P4A output processed.In the embodiment block diagram of Fig. 7, the input of delay detection module YC1 is that A phase compensation control circuit is adopted in Fig. 5 When the A phase that sample comparison circuit embodiment 1 exports triggers gating controlling value, M is equal to 7.In the embodiment block diagram of Fig. 7, delay detection The input of module YC1 is that the A phase that A phase compensation control circuit samples that comparison circuit embodiment 2 exports in Fig. 6 triggers gating controlling value When, M is equal to 10.B phase, C phase use the identical delay protection circuit with A phase.

Fig. 8 is the delay detection circuit embodiment 1 for triggering gating control value signal Y11 in delay detection module needle to A phase. Resistance RY0, capacitor CY0, driving gate FY0 realize the signal delay of Y11 is obtained Y11 it is delayed after signal Y21.Resistance RY1, capacitor CY1, diode DY1, phase inverter FY1 composition are directed to the rising edge detection circuit of input signal Y 11, phase inverter FY1 Output signal YP1 in, the pulse of corresponding negative pulse form is exported after Y11 rising edge.Resistance RY2, capacitor CY2, diode DY2, phase inverter FY2, FY3 composition are directed to the failing edge detection circuit of input signal Y 11, and phase inverter FY3's is defeated Out in signal YP2, the pulse of corresponding negative pulse form is exported after Y11 failing edge.NAND gate FY4 is accomplished that Or logic (under negative logic) function, when there is negative pulse generation in input signal Y P1, YP2, the edge inspection of NAND gate FY4 output It surveys in signal Y31 and generates positive pulse, i.e., when input signal Y 11 changes, NAND gate FY4 exports the list of a positive pulse form Pulse.In Fig. 8, the device of driving gate FY0, phase inverter FY1, phase inverter FY3 preferably with Schmidt's input, for example, phase inverter selects Select 74HC14, CD40106 etc.；Driving gate FY0 can be made of 2 phase inverters with Schmidt's input.

Fig. 9 is the delay detection circuit embodiment 2 for triggering gating control value signal Y11 in delay detection module needle to A phase. Phase inverter FY5, resistance RY3, capacitor CY3 carry out reverse phase and delay to input signal Y 11, obtain the delayed inversion signal of Y11 YP0；Phase inverter FY6 again by YP0 reverse phase, obtain Y11 it is delayed after signal Y21.NAND gate FY7 input signal be Y11 and The pulse of negative pulse form corresponding with Y11 rising edge is generated in Y11 delayed inversion signal YP0, output signal YP1； Or the signal of door FY8 input is the delayed inversion signal YP0 of Y11 and Y11, is generated and Y11 failing edge phase in output signal YP2 The pulse for the negative pulse form answered.NAND gate FY9 is accomplished that or logic (under negative logic) function, when input signal Y P1, When having negative pulse generation in YP2, positive pulse is generated in the Edge check signal Y31 of NAND gate FY9 output, that is, works as input signal When Y11 is changed, NAND gate FY9 exports the pulse of a positive pulse form.In Fig. 9, phase inverter FY6, NAND gate FY7 or Device of the door FY8 preferably with Schmidt's input, for example, phase inverter selects 74HC14, CD40106 etc.；NAND gate selection 74HC132, CD4093 etc.；Or door select 74HC7032, or selection 2 band Schmidt input phase inverters and 1 and NOT gate is realized or Men Gongneng.

Figure 10 is the delay detection circuit embodiment for triggering gating control value signal Y11 in delay detection module needle to A phase 3, wherein forming the rising edge detection electricity for input signal Y 11 by resistance RY1, capacitor CY1, diode DY1, phase inverter FY1 Road, and the failing edge detection for input signal Y 11 is formed by resistance RY2, capacitor CY2, diode DY2, phase inverter FY2, FY3 Circuit, and it is identical as the embodiment 1 of Fig. 8 using the circuit of NAND gate FY4 output Edge check signal Y31.In Figure 10, by anti- Phase device FY11, FY12, FY13, FY14 realize the signal delay of Y11 is obtained Y11 it is delayed after signal Y21.

The delay detection circuit for triggering the signal Y11 in gating controlling value for A phase can choose Fig. 8, Fig. 9, Tu10Shi Apply any one of 1-3；Under normal conditions, all signals in gating controlling value are triggered for A, B, C three-phase, be all made of Same delay detection circuit.For example, setting M equal to 7, the A phase of A, B, C three-phase triggers gating controlling value by 7 bits Value composition, then need 21 delay detection circuits altogether；21 delay detection circuits can all using the embodiment of Fig. 81, or It is all using the embodiment of Fig. 92, or all using the embodiment of Figure 10 3.The detection circuit that is delayed can also be using satisfaction It is required that other circuits realize its function.

The not trigger region control signal generator module function of each phase is, when input triggers gating controlling value for this phase A phase Any one of Edge check signal or multiple when having pulse relevant to edge, the not trigger region control of the phase A pulse is exported in signal processed.Figure 11 is that trigger region does not control signal generator module embodiment to A phase, by including M defeated The nor gate FY10 entered realizes that corresponding function, the input signal of nor gate FY10 are the Edge check signal Y31-Y3M of A phase, Output is that trigger region does not control signal P4A to A phase.In Figure 11 embodiment, the A phase pulse that trigger region control signal does not export is negative Pulse, i.e., trigger region control signal low level is not effective；When nor gate FY10 is changed into or when door, not trigger region control signal output Pulse be positive pulse.If the pulse relevant to edge that has generated in the Edge check signal Y31-Y3M of input is Negative pulse, then the nor gate in Figure 11 should be changed to NAND gate either with door, realize under negative logic or logic function.

All gate circuits in delay protection circuit are all made of single supply+VCC1 power supply.Figure 12 is in delay protection circuit Part waveform correlation schematic diagram.From principle and the requirement of sampling comparison circuit it is found that its A phase exported triggers gating controlling value When normal change occurs, change each time with 2.In Figure 12, the Y11 that A phase triggers in gating controlling value occurs one respectively Secondary rising edge changes and failing edge changes, and Y21 is that the A phase after the Y11 delay T1 time triggers gating controlling value；In the delay of Fig. 8 In detection circuit embodiment 1, T1 is determined by the product size (i.e. time constant size) of resistance RY0 and capacitor CY0；Fig. 9's In the detection circuit embodiment 2 that is delayed, T1 is determined by the product size of resistance RY3 and capacitor CY3；In the delay detection circuit of Figure 10 In embodiment 3, T1 is determined by the gate delay time size of phase inverter FY11, FY12, FY13, FY14 itself.In Figure 12, signal Because the negative pulse width that Y11 rising edge generates is T2 in YP1；In the delay detection circuit embodiment 1 of Fig. 8 and the delay inspection of Figure 10 In slowdown monitoring circuit embodiment 3, T2 is determined by the product size of resistance RY1 and capacitor CY1；In the delay detection circuit embodiment 2 of Fig. 9 In, T2 is determined by the product size of resistance RY3 and capacitor CY3.In Figure 12, because of the negative pulse of Y11 failing edge generation in signal YP2 Width is T3；In the delay detection circuit embodiment 1 of Fig. 8 and the delay detection circuit embodiment 3 of Figure 10, T3 is by resistance RY2 It is determined with the product size of capacitor CY2；In the delay detection circuit embodiment 2 of Fig. 9, T3 is multiplied by resistance RY3 and capacitor CY3's Product size determines.In Figure 12,2 positive pulses in Edge check signal Y31 respectively in signal YP1 because Y11 rising edge generates Negative pulse and signal YP2 in the negative pulse that generates by Y11 failing edge it is corresponding.Figure 12 A phase is located to trigger in gating controlling value When rising edge change occurs for Y11, the Y12 that A phase triggers in gating controlling value occurs failing edge and changes, at this time its corresponding edge inspection It surveys signal Y32 and accordingly generates a positive pulse；If A phase triggers the Y12 in gating controlling value when failing edge, which occurs, for Y11 changes A rising edge occurs simultaneously to change, accordingly generates a positive pulse in its corresponding Edge check signal Y32 at this time；In this phase Between, there is no variations for other triggering gating control value signals except Y11, Y12, gate with other triggerings except Y11, Y12 Controlling the corresponding Edge check signal of value signal is low level, is not drawn into Figure 12.It controls and believes according to not trigger region above-mentioned Number generation module or logic function, the single pulse width of trigger region control signal generator module output and the edge of input are examined It surveys in signal and generates in the input pulse of the pulse that widest pulse width is identical jointly, this width difference is because not co-extensive When detection circuit in determine the resistance of T2, T3, capacitance difference caused by.The 1st positive pulse ratio Y32 in Figure 12, in Y31 In the 1st positive pulse it is wide, the 2nd positive pulse in the 2nd positive pulse ratio Y32 in Y31 is narrow, not trigger region control signal The 1st negative pulse width in P4A is consistent with the 1st positive pulse width in Edge check signal Y31, not trigger region control letter The 2nd negative pulse width in number P4A is consistent with the 2nd positive pulse width in Edge check signal Y32.

It is delayed in detection circuit embodiment 1 in the delay protection circuit of Fig. 8, A phase triggers gating controlling value and changes Delay time to corresponding not trigger region control signal pulse forward position is that FY10 prolongs in gate circuit FY1, FY4 and Figure 11 The sum of the delay time of FY10 in the sum of slow time or gate circuit FY3, FY4 and Figure 11；By resistance RY0 and capacitor CY0 The A phase that determines of product size to trigger the range of choice of signal delay time T1 of gating controlling value be the ms order of magnitude, it is clear that it is big Etc. it triggers gating controlling value in A phase to change to the delay time in corresponding not trigger region control signal pulse forward position, i.e., Grade encoded radio signal delay change at the time of be later than A phase trigger gating controlling value change after export pulse forward position when It carves.Strictly speaking, T1 actually includes the delay of lag time and gate circuit FY0 caused by resistance RY0 and capacitor CY0 The sum of time.In Fig. 8 embodiment 1, in selection parameter, the value of the value and T3 that make T2 is all larger than the value of T1, encodes grade Value signal delay change at the time of meet need to be triggered earlier than A phase gating controlling value change after export pulse it is rear along when The requirement at quarter.

In the delay detection circuit embodiment 2 in Fig. 9 delay protection circuit, A phase triggers gating controlling value and changes Delay time to corresponding not trigger region control signal pulse forward position is that FY10 prolongs in gate circuit FY7, FY9 and Figure 11 The sum of the delay time of FY10 in the sum of slow time or gate circuit FY8, FY9 and Figure 11；T1 is the number of the ms order of magnitude Value, it is clear that trigger the signal delay time of gating controlling value by the A phase that the product size of resistance RY3 and capacitor CY3 determines at this time The A phase that T1 is greater than triggers gating controlling value and changes to the delay time in corresponding not trigger region control signal pulse forward position, It is later than A phase at the time of i.e. A phase triggers gating controlling value signal delay change and triggers the list for gating and exporting after controlling value changes The forward position moment of pulse.In the delay detection circuit embodiment 2 of Fig. 9, at the time of A phase triggers gating controlling value signal delay change Trigger the rear of the pulse exported after gating controlling value changes with A phase is influenced by signal YP0 change along the moment；A phase It is the delay after signal YP0 change again through gate circuit FY6 at the time of triggering gating controlling value signal delay changes；A phase triggers choosing The pulse that logical controlling value exports after changing it is rear along the moment be signal YP0 change after again through gate circuit FY7, FY9 and figure Delay after the sum of delay time of FY10 or signal YP0 change in 11 again through FY10 in gate circuit FY8, FY9 and Figure 11 The sum of time；Obviously, A phase triggers gating controlling value signal delay and changes at the time of ratio A phase and triggers and gate controlling value at this time The rear delay time for passing through 2 gate circuits less along the moment of the pulse exported after change meets A phase and triggers gating controlling value letter Number delay need to trigger the rear of pulse that exports after gating controlling value changes at the time of change earlier than A phase and want along the moment It asks.

Figure 13 is the compensation three-phase main circuit unit embodiment 1 of Fig. 3 to be triggered in trigger unit, or mend in triggering Fig. 4 The trigger circuit embodiment for repaying bidirectional thyristor SR1 in the A phase main circuit of formula three-phase main circuit unit, by altemating trigger optocoupler UG1, resistance RG1, resistance RG2 composition, Trig control signal P51 low level are effective.Altemating trigger optocoupler UG1 can choose The phase shifts type bidirectional thyristor output photoelectric coupler such as MOC3022, MOC3023, MOC3052, MOC3053.Power supply+VCCA be by Protect the A phase trigger circuit controlled source of driving unit control.Trigger the A phase of the compensation three-phase main circuit unit embodiment 1 of Fig. 3 Bidirectional thyristor SR2-SR6 in main circuit, or the A phase main circuit of the triggering compensation three-phase main circuit unit embodiment 2 of Fig. 4 The trigger circuit of middle bidirectional thyristor SR2-SR8, as the circuit structure of bidirectional thyristor SR1 in triggering A phase main circuit, by A phase Trig control signal P5A control.The trigger circuit structure of all bidirectional thyristors is led with triggering A phase in triggering B phase main circuit The circuit structure of bidirectional thyristor SR1 is the same in circuit, is controlled by B phase Trig control signal P5B, and power supply is+VCCB, for by Protect the B phase trigger circuit controlled source of driving unit control.Trigger the trigger circuit of all bidirectional thyristors in C phase main circuit Structure is controlled as the circuit structure of bidirectional thyristor SR1 in triggering A phase main circuit by C phase Trig control signal P5C, electricity Source is+VCCC, for the C phase trigger circuit controlled source of protected driving unit control.The altemating trigger optocoupler UG1 of Figure 14 from The trigger pulse of other altemating trigger optocouplers output collectively constitutes triggering in the trigger pulse and trigger unit of G11, G12 output Signal P6.

Figure 14 is the embodiment 1 that A phase triggers gate control circuit, for the compensation three-phase main circuit unit embodiment 1 of Fig. 3 In A phase main circuit compensate control；TB1 offset voltage is low in Fig. 3, and TB2 offset voltage is high, and the offset voltage of TB2 is TB1 2 times of offset voltage；A phase AC power source phase voltage fluctuation range is 220V ± 10%, it is desirable that is stablized in 220V ± 2% Output in range.In Figure 14, the A phase that A phase triggers gate control circuit input, which triggers gating controlling value Y21-Y27 high level, to be had Effect, 21 diode D11-D73, triggering gating control alignment Y21-Y27, triggering driving line VK1-VK6 composition diode touching Hair gating matrix, resistance RS1-RS6, triode VS1-VS6 form the driving circuit of A phase Trig control signal P51-P56, at this time A phase Trig control signal P5A is formed by P51-P56.

Table 1 is the triggering gating control function table that A phase triggers gate control circuit embodiment 1, lists 7 A and touches 7 significance bits in hair gating controlling value, i.e., 7 effective A phases trigger double in A phase thyristor bridge corresponding to gating controlling value To the on-off assembled state of thyristor.7 effective A phases trigger gating controlling value it is corresponding with voltage class section 1-7, A is touched Hair gate control circuit triggers the on off operating mode of bidirectional thyristor in gating controlling value control A phase main circuit embodiment 1 according to A phase Carry out corresponding voltage compensation；In table 1,1 represents corresponding bidirectional thyristor need to be in the conductive state, and 0 representative is corresponding two-way Thyristor is in an off state.The function connects that diode triggered gating matrix in Figure 14 is required according to table 1, are triggered by A phase Gate the control of controlling value Y21-Y27；I.e. when every triggering gating control alignment is effective with its, corresponding on-off assembled state is needed It is connected and is respectively provided with diode between the triggering driving line of bidirectional thyristor and is attached, when certain root triggers gating control alignment When effective, keep the triggering driving line signal for needing to be connected bidirectional thyristor effective by diode.For example, input voltage is minimum Voltage class 1, i.e. Y21 when being effectively high level, diode D11, D12, D13 conducting in triggering gating matrix, triggering drives Dynamic line VK1, VK4, VK6 are that high level controls triode VS1, VS4, VS6 conducting respectively to go P51, P54, P56 effectively open-minded Bidirectional thyristor SR1, SR4, SR6, triggering gate other diodes in matrix and end, control shutdown bidirectional thyristor SR2, SR3, SR5 make TB1, TB2 carry out positive compensation；Input voltage is voltage class 2, i.e. Y22 when being effectively high level, triggering Diode D21, D22, D23 conducting in matrix are gated, triggering driving line VK1, VK3, VK6 are that high level controls three poles respectively Pipe VS1, VS3, VS6 conducting make P51, P53, P56 effectively go to open bidirectional thyristor SR1, SR3, SR6, and triggering gates in matrix The cut-off of other diodes, control shutdown bidirectional thyristor SR2, SR4, SR5 only make TB2 carry out positive compensation；Input voltage is When voltage class 4, i.e. Y24 are effectively high level, diode D41, D42, D43 in triggering gating matrix are connected, triggering driving Line VK1, VK3, VK5 be high level control respectively triode VS1, VS3, VS5 conducting make P51, P53, P55 effectively go to open it is double To thyristor SR1, SR3, SR5, other diodes in triggering gating matrix end, control shutdown bidirectional thyristor SR2, SR4, SR6 realizes 0 voltage compensation, i.e., TB1, TB2 are without compensation；Input voltage is that voltage class 5, i.e. Y25 is effectively high level When, triggering gates diode D51, D52, D53 conducting in matrix, and triggering driving line VK2, VK3, VK6 are high level difference Control triode VS2, VS3, VS6 conducting makes P52, P53, P56 effectively go to open bidirectional thyristor SR2, SR3, SR6, triggering choosing Other diodes cut-off in logical matrix, control shutdown bidirectional thyristor SR1, SR4, SR5, only makes TB1 carry out Contrary compensation；It is defeated Enter voltage to be voltage class 7, i.e. Y27 when being effectively high level, diode D71, D72, D73 conducting in triggering gating matrix, Triggering driving line VK2, VK3, VK5 controls triode VS2, VS3, VS5 conducting for high level respectively keeps P52, P53, P55 effective It goes to open bidirectional thyristor SR2, SR3, SR5, other diodes cut-off in triggering gating matrix, control shutdown bidirectional thyristor SR1, SR4, SR6, TB1, TB2 carry out Contrary compensation；Etc..

Table 1

Figure 15 is the embodiment 2 that A phase triggers gate control circuit, equally real for the compensation three-phase main circuit unit of Fig. 3 The A phase main circuit applied in example 1 compensates control；TB1 offset voltage is low in Fig. 3, and TB2 offset voltage is high, the offset voltage of TB2 It is 2 times of TB1 offset voltage；AC power source phase voltage fluctuation range is 220V ± 10%, it is desirable that is stablized in 220V ± 2% In the range of export.In Figure 15, the A phase that A phase triggers gate control circuit input, which triggers gating controlling value Y21-Y27 low level, to be had Effect, 21 diode D11-D73, triggering gating control alignment Y21-Y27, triggering driving line P51-P56 composition diode touching Hair gating matrix directly exports the effective A phase Trig control signal P51-P56 of low level by triggering gating matrix.The present embodiment 2 In there is no the driving circuit of Trig control signal P51-P56.

The function connects that diode triggered gating matrix in Figure 15 is required according to table 1, are triggered gating controlling value by A phase The control of Y21-Y27；For example, input voltage is minimum voltage class 1, i.e. Y21 when being effectively low level, triggering gating matrix In diode D11, D12, D13 conducting, so that P51, P54, P56 is become effective low level respectively and go to open bidirectional thyristor SR1, SR4, SR6, triggering gate other diodes cut-off in matrix, and control shutdown bidirectional thyristor SR2, SR3, SR5 make TB1, TB2 carry out positive compensation；Input voltage is voltage class 2, i.e. Y22 when being effectively low level, in triggering gating matrix Diode D21, D22, D23 conducting, make respectively P51, P53, P56 become effective low level go to open bidirectional thyristor SR1, SR3, SR6, triggering gate other diodes cut-off in matrix, and control shutdown bidirectional thyristor SR2, SR4, SR5 only make TB2 Carry out positive compensation；Input voltage is voltage class 4, i.e. Y24 when being effectively low level, the diode in triggering gating matrix D41, D42, D43 conducting, make P51, P53, P55 become effective low level respectively and go to open bidirectional thyristor SR1, SR3, SR5, Other diodes cut-off in triggering gating matrix, control shutdown bidirectional thyristor SR2, SR4, SR6, realizes 0 voltage compensation, i.e., TB1, TB2 are without compensation；Input voltage is voltage class 5, i.e. Y25 when being effectively low level, in triggering gating matrix Diode D51, D52, D53 conducting, make respectively P52, P53, P56 become effective low level go to open bidirectional thyristor SR2, SR3, SR6, triggering gate other diodes cut-off in matrix, and control shutdown bidirectional thyristor SR1, SR4, SR5 only make TB1 Carry out Contrary compensation；Input voltage is voltage class 7, i.e. Y27 when being effectively low level, the diode in triggering gating matrix D71, D72, D73 conducting, make P52, P53, P55 become effective low level respectively and go to open bidirectional thyristor SR2, SR3, SR5, Other diodes cut-off in triggering gating matrix, control shutdown bidirectional thyristor SR1, SR4, SR6, TB1, TB2 are carried out instead To compensation；Etc..

In Figure 15, the low level that A phase triggers in gating controlling value Y21-Y27 needs to directly drive three altemating trigger optocouplers Input terminal lumination of light emitting diode；Whens altemating trigger optocoupler selects MOC3022, MOC3052 etc., the driving electricity of 30mA is needed Stream；Whens altemating trigger optocoupler selects MOC3023, MOC3053 etc., the driving current of 15mA is needed.

Figure 16 is the embodiment 3 that A phase triggers gate control circuit, for the compensation three-phase main circuit unit embodiment 2 of Fig. 4 In A phase main circuit compensate control；TB1 offset voltage is minimum in Fig. 4, TB3 offset voltage highest；And the compensation electricity of TB2 Pressure is 2 times of TB1 offset voltage, and the offset voltage of TB3 is 2 times of TB2 offset voltage；A phase AC power source phase voltage fluctuates model It encloses for 220V+10% to 220V-20%, it is desirable that stablized and exported in the range of 220V ± 2%.In Figure 16, A phase triggers choosing It is effective that the A phase of logical control circuit input triggers gating controlling value Y21-Y210 high level, 40 diode D01-D94, triggering choosing Logical control alignment Y21-Y210, triggering driving line VK1-VK8 composition diode triggered gate matrix, resistance RS1-RS8, three poles Pipe VS1-VS8 forms the driving circuit of A phase Trig control signal P51-P58, i.e., forms A phase by P51-P58 at this time and trigger control Signal P5A.

Table 2 is the triggering gating control function table that A phase triggers gate control circuit embodiment 3, lists 10 A phases and triggers 10 significance bits in controlling value are gated, i.e., 10 effective A phases trigger double in A phase thyristor bridge corresponding to gating controlling value To the on-off assembled state of thyristor.10 effective A phases trigger gating controlling value it is corresponding with voltage class 1-10, A phase triggers Gate control circuit according to A phase trigger gating controlling value control A phase main circuit embodiment 2 in bidirectional thyristor on off operating mode into The corresponding voltage compensation of row；In table 2,1, which represents corresponding bidirectional thyristor, needs in the conductive state, the corresponding two-way crystalline substance of 0 representative Brake tube needs in an off state.The function connects that diode triggered gating matrix in Figure 16 is required according to table 2, are triggered by A phase Gate the control of controlling value Y21-Y210；For example, input voltage is voltage class 7, i.e. Y27 when being effectively high level, triggering choosing Diode D71, D72, D73, D74 conducting in logical matrix, triggering driving line VK1, VK3, VK5, VK7 are that high level is controlled respectively Triode VS1, VS3, VS5, VS7 processed conducting make P51, P53, P55, P57 effectively go to open bidirectional thyristor SR1, SR3, SR5, SR7, triggering gate other diodes cut-off in matrix, turn off bidirectional thyristor SR2, SR4, SR6, SR8, realize that 0 voltage is mended It repays, i.e., TB1, TB2, TB3 are without compensation；Input voltage is voltage class 8, i.e. Y28 when being effectively high level, triggering gating Diode D81, D82, D83, D84 conducting in matrix, triggering driving line VK2, VK3, VK6, VK8 are that high level controls respectively Triode VS2, VS3, VS6, VS8 conducting make P52, P53, P56, P58 effectively go to open bidirectional thyristor SR2, SR3, SR6, SR8, triggering gate other diodes cut-off in matrix, turn off bidirectional thyristor SR1, SR4, SR5, SR7, carry out TB1 anti- To compensation；Input voltage is voltage class 9, i.e. Y29 when being effectively high level, diode D91, D92 in triggering gating matrix, D93, D94 conducting, triggering driving line VK2, VK4, VK5, VK8 are that high level controls triode VS2, VS4, VS5, VS8 respectively Conducting makes P52, P54, P55, P58 effectively go to open bidirectional thyristor SR2, SR4, SR5, SR8, and triggering gates other in matrix Diode cut-off, turns off bidirectional thyristor SR1, SR3, SR6, SR7, and TB2 is made to carry out Contrary compensation.

Table 2

For another example input voltage is voltage class 10, i.e. Y210 when being effectively high level, two poles in triggering gating matrix Pipe D01, D02, D03, D04 conducting, triggering driving line VK2, VK3, VK5, VK8 be high level control respectively triode VS2, VS3, VS5, VS8 conducting make P52, P53, P55, P58 effectively go to open bidirectional thyristor SR2, SR3, SR5, SR8, triggering gating Other diodes cut-off in matrix, turns off bidirectional thyristor SR1, SR4, SR6, SR7, makes TB1, TB2 while reversely being mended It repays；Input voltage is voltage class 6, i.e. Y26 when being effectively high level, diode D61, D62, D63 in triggering gating matrix, D64 conducting, triggering driving line VK1, VK4, VK5, VK7 are that high level controls triode VS1, VS4, VS5, VS7 conducting respectively P51, P54, P55, P57 is set effectively to go to open bidirectional thyristor SR1, SR4, SR5, SR7, other two poles in triggering gating matrix Pipe cut-off, turns off bidirectional thyristor SR2, SR3, SR6, SR8, and TB1 is made to carry out positive compensation；Input voltage is voltage class 4, i.e. When Y24 is effectively high level, diode D41, D42, D43, D44 in triggering gating matrix are connected, triggering driving line VK1, VK4, VK6, VK7 control triode VS1, VS4, VS6, VS7 conducting for high level respectively goes out P51, P54, P56, P57 effectively Pass two-way thyristor SR1, SR4, SR6, SR7, triggering gate other diodes in matrix and end, shutdown bidirectional thyristor SR2, SR3, SR5, SR8 make TB1, TB2 while carrying out positive compensation；Input voltage is that voltage class 3, i.e. Y23 is effectively high level When, triggering gates diode D31, D32, D33, D34 conducting in matrix, and triggering driving line VK1, VK3, VK5, VK8 are high Level controls triode VS1, VS3, VS5, VS8 conducting respectively makes P51, P53, P55, P58 effectively go to open bidirectional thyristor SR1, SR3, SR5, SR8, triggering gate other diodes cut-off in matrix, turn off bidirectional thyristor SR2, SR4, SR6, SR7, TB3 is set to carry out positive compensation；Input voltage is voltage class 1, i.e. Y21 when being effectively high level, two in triggering gating matrix Pole pipe D11, D12, D13, D14 conducting, triggering driving line VK1, VK3, VK6, VK8 be high level control respectively triode VS1, VS3, VS6, VS8 conducting make P51, P53, P56, P58 effectively go to open bidirectional thyristor SR1, SR3, SR6, SR8, triggering gating Other diodes cut-off in matrix, turns off bidirectional thyristor SR2, SR4, SR5, SR7, makes TB2, TB3 while carrying out positive benefit It repays；Etc..

When the A phase in table 2 trigger gating controlling value Y21-Y210 low level it is effective when, equally can be according to A phase in Figure 15 The method for triggering gate control circuit embodiment 2, by 40 diode D01-D94, triggering gating control alignment Y21-Y210, touching Hair control line P51-P58 composition triggering gating matrix, directly exports the effective A phase of low level by triggering gating matrix and triggers control Signal P51-P58 processed.At this point, the low level that A phase triggers in gating controlling value Y21-Y210 needs to directly drive four exchange touchings The input terminal lumination of light emitting diode of luminous coupling；Whens altemating trigger optocoupler selects MOC3022, MOC3052 etc., the drive of 40mA is needed Streaming current；Whens altemating trigger optocoupler selects MOC3023, MOC3053 etc., the driving current of 20mA is needed.

Figure 17 is that the error detection of A phase differentiates circuit embodiments, triggers gating controlling value P3A, i.e. high level effective 10 for A phase Position triggering gating controlling value Y21-Y210 is differentiated that the triggering gating controlling value of output differentiates that signal P7A high level is effective, low Level is invalid；I.e. output P7A is 1, and it is effective to indicate that A phase triggers gating controlling value；Exporting P7A is 0, indicates that A phase triggers gating control Value processed is invalid.

In Figure 17, FD3 is the ROM memory with the input of 10 bit address and the output of 1 data, the triggering choosing of 10 A phases Logical controlling value Y21-Y210 is respectively connected to 10 bit address input A0-A9, and A phase triggers gating controlling value and differentiates signal P7A from number It is exported according to output end D0.Table 3 is that error detection differentiates in the logic true value table and Figure 17 of circuit in the storage unit of ROM memory Hold tables of data；Have in input signal Y 21-Y210 and when only 1 is 1, output P7A is 1；When Y21-Y210 is other inputs, Exporting P7A is 0.

A phase error detection differentiates that the function of circuit is when judging have and only one has in the position M that A phase triggers gating controlling value It when effect, enables the A phase of output trigger gating controlling value and differentiates that signal P7A is effective, otherwise enable the A phase of output trigger gating controlling value and sentence Level signal P7A is invalid；I.e. A phase trigger in the position M of gating controlling value do not only have one it is effective when, or it is effective without one When, it enables the A phase of output trigger gating controlling value and differentiates that signal P7A is invalid.In Figure 17 the content of ROM memory storage unit according to The data of table 3 are written, and in table 3,10 triggering gating equal high level of controlling value Y21-Y210 are effective, and low level is invalid；The A of output Mutually triggering gating controlling value differentiates that signal P7A high level is effective, and low level is invalid.If 10 triggerings of input gate controlling value The equal low level of Y21-Y210 is effective, and high level is invalid, then all 0 change, 1,1 change 0 is 10 row address contents before inputting in table 3 It can.If necessary to output A phase trigger gating controlling value differentiate signal P7A low level it is effective, high level is invalid, then will be in table 3 All 0 change 1,1 becomes 0 to the content of last 1 column data.

Table 3

When error detection differentiates that circuit needs to be differentiated for other digits triggering gating controlling value, ROM can be equally used Memory carries out.The A phase that table 4 inputs, which triggers gating controlling value P3A, 7, and equal high level is effective, and low level is invalid；The A of output Mutually triggering gating controlling value differentiates that signal P7A high level is effective, and low level is invalid.Using with the input of 7 bit address and 1 data 10 triggerings gating controlling value Y21-Y27 of the ROM memory of output, A phase is respectively connected to 7 bit address input A0-A6, A phase Triggering gating controlling value differentiates that signal P7A is exported from data output end D0；The content of ROM memory storage unit is according to table 4 Content write-in.

Table 4

B phase, C phase error detection differentiate that circuit uses the identical error detection with A phase to differentiate circuit.The function of B phase error detection differentiation circuit It is to enable the B phase of output trigger gating when judging to have in the position M that B phase triggers gating controlling value P3B and when only one effective and control Value processed differentiates that signal P7B is effective, otherwise enables the B phase of output trigger gating controlling value and differentiates that signal P7B is invalid；C phase error detection differentiates The function of circuit is to enable the C phase of output when judging to have in the position M that C phase triggers gating controlling value P3C and when only one effective Triggering gating controlling value differentiates that signal P7C is effective, otherwise enables the C phase of output trigger gating controlling value and differentiates that signal P7C is invalid.

Error detection differentiates that the logic function of circuit can also be realized in other ways, for example, the logic true value of table 3, table 4 Table, can with or NOT logic door to combine realize the function.Error detection differentiates the ROM memory in circuit, or adopts When realizing function with logic gate, it is all made of single supply+VCC1 power supply.

Figure 18 is protection drive unit embodiment, if the A phase of input, B phase, B phase trigger gating, controlling value differentiates signal The equal high level of P7A, P7B, P7C is effective, and low level is invalid；For example, P7A, which triggers gating controlling value for 1 expression A phase, differentiates that signal has Effect, P7A are that 0 expression A phase triggers gating controlling value differentiation invalidating signal.If trigger region control is not believed for the A phase of input, B phase, B phase Number equal low level of P4A, P4B, P4C is effective, and high level is invalid；For example, when P4A is 0 showing that A phase galvanic electricity source phase voltage is handed over to exist Fluctuation makes A phase trigger gating controlling value and produces variation, needs to carry out bidirectional thyristor on off operating mode in A phase thyristor bridge Switching changes compensation way；In handoff procedure, when to avoid upper and lower bridge arm switching in thyristor bridge, because of bidirectional thyristor The factor being delayed to turn off causes power supply short circuit, when not trigger region controls the signal valid period, i.e. the P4A of embodiment is equal to 0, closes All bidirectional thyristors in disconnected A phase thyristor bridge.

In Figure 18, with door FY21, triode VT, freewheeling diode VD, resistance RK1, relay coil KA, relay coil KB, relay coil KC composition protection control circuit；With door FY22, triode VK1, triode VK2, resistance RK2, resistance RK3 Form A phase trigger circuit controlled source+VCCA control circuit；With door FY23, triode VK3, triode VK4, resistance RK4, electricity It hinders RK5 and forms B phase trigger circuit controlled source+VCCB control circuit；With door FY24, triode VK5, triode VK6, resistance RK6, resistance RK7 form C phase trigger circuit controlled source+VCCC control circuit.It is all made of with door FY21, FY22, FY23, FY24 Single supply+VCC1 power supply；+ VCC2 is the power supply of relay coil and the source current of trigger circuit controlled source.

In Figure 18, differentiate that signal P7A, B phase trigger gating controlling value and differentiates signal when the A phase of input triggers gating controlling value P7B, C phase trigger gating controlling value and differentiate there is one in signal P7C for low level, i.e., A phase triggers gating controlling value, B phase triggers Gating controlling value, C phase trigger have in gating controlling value one it is invalid when, the output P7K with door FY21 is low level, controls three poles Pipe VT cut-off, relay coil KA power loss make relay in the A phase main circuit of the compensation three-phase main circuit unit embodiment 1 of Fig. 3 Normal open switch KA-1, KA-2, KA-3 are disconnected, or make the A phase main circuit of the compensation three-phase main circuit unit embodiment 2 of Fig. 4 Middle relay normal open switch KA-1, KA-2, KA-3, KA-4 are disconnected；Control makes the compensation three-phase main circuit unit embodiment 1 of Fig. 3 A phase main circuit in relay normally closed switch KA-5, KA-6 closure, make the voltage 0 being applied on TB1, TB2 magnet exciting coil, Either control makes relay normally closed switch KA-5, KA- in the A phase main circuit of the compensation three-phase main circuit unit embodiment 2 of Fig. 4 6, KA-7 is closed, and makes the voltage 0 being applied on TB1, TB2, TB3 magnet exciting coil；It realizes and the open circuit of A phase thyristor bridge is protected Shield.Triode VT cut-off, while controlling relay coil KB, relay coil KC power loss, makes B phase main circuit, in C phase main circuit Corresponding relay switch execute with the identical movement of relay switch in A phase main circuit, realization is to B phase, C phase thyristor bridge Open-circuit-protection.Output P7K with door FY21 is low level, while making to export low level, triode with door FY22, FY23, FY24 VK1, VK2, VK3, VK4, VK5, VK6 are turned off, the equal power loss of controlled source+VCCA ,+VCCB ,+VCCC, the A phase in trigger unit Trigger circuit, B phase trigger circuit, C phase trigger circuit are because without power supply, without working, i.e., uneven issue triggers two-way crystalline substance The trigger pulse of brake tube.Therefore, no matter defeated as long as there is the triggering gating controlling value of a phase invalid in three-phase triggering gating controlling value Whether trigger region control signal is ineffective for the three-phase entered, and protection driving unit all cuts off the power supply of trigger unit, stops hair The trigger pulse of all bidirectional thyristors out, while all bridge arms for disconnecting three-phase thyristor bridge are controlled, it realizes to three-phase crystalline substance lock The open-circuit-protection of pipe bridge.

In Figure 18, differentiate that signal P7A, B phase trigger gating controlling value and differentiates signal when the A phase of input triggers gating controlling value P7B, C phase trigger gating controlling value and differentiate all high level of signal P7C, i.e., A phase triggers gating controlling value, B phase triggers gating Controlling value, C phase trigger gating controlling value it is all effective when, be high level, triode VT conducting, control with the output P7K of door FY21 Relay coil KA processed obtains electric, opens relay normally open in the A phase main circuit of the compensation three-phase main circuit unit embodiment 1 of Fig. 3 KA-1, KA-2, KA-3 closure are closed, relay normally closed switch KA-5, KA-6 are disconnected, or make the compensation three-phase main circuit of Fig. 4 Relay normal open switch KA-1, KA-2, KA-3, KA-4 are closed in the A phase main circuit of unit embodiment 2, relay normally closed switch KA-5, KA-6, KA-7 are disconnected, and thyristor bridge is in compensation work state.Triode VT conducting, while controlling relay coil KB, relay coil KC obtain it is electric, make B phase main circuit, in C phase main circuit corresponding relay switch execute in A phase main circuit The identical movement of relay switch, B phase, C phase thyristor bridge are in compensation work state.

In Figure 18, when three-phase triggering gating controlling value is all effective, P7K are high level, when trigger region does not control letter to A phase Number effectively, i.e. P4A be equal to 0 when, with door FY22 export low level, triode VK1, VK2 cut-off, controlled source+VCCA power loss, A Phase trigger circuit does not work, i.e., does not issue the trigger pulse for triggering bidirectional thyristor in A phase thyristor bridge, turn off A phase thyristor All bidirectional thyristors in bridge show that A phase AC power source phase voltage has fluctuation at this time, so that A phase is triggered gating controlling value and generate Variation needs to carry out the switching of bidirectional thyristor on off operating mode in A phase thyristor bridge, changes compensation way.It is triggered in three-phase When gating controlling value is all effective, P7K are high level, when trigger region does not control invalidating signal to A phase, i.e. when P4A is equal to 1, with door FY22 exports high level, and triode VK1, VK2 are both turned on, and controlled source+VCCA obtains electric, A phase trigger circuit normal work, by A Mutually triggering gate control circuit triggers gating controlling value selection phase according to effective, corresponding with some voltage class section A phase The A phase Trig control signal answered is effective, and A phase trigger circuit is made to issue trigger pulse, controls bidirectional thyristor in A phase thyristor bridge On off operating mode, A phase main circuit is in compensation work state corresponding with the voltage class section.

In Figure 18, when three-phase triggering gating controlling value is all effective, P7K are high level, when trigger region does not control letter to B phase Number effectively, i.e. P4B be equal to 0 when, with door FY23 export low level, triode VK3, VK4 cut-off, controlled source+VCCB power loss, B Phase trigger circuit does not work, i.e., does not issue the trigger pulse for triggering bidirectional thyristor in B phase thyristor bridge, turn off B phase thyristor All bidirectional thyristors in bridge show that B phase AC power source phase voltage has fluctuation at this time, so that B phase is triggered gating controlling value and generate Variation needs to carry out the switching of bidirectional thyristor on off operating mode in B phase thyristor bridge, changes compensation way.It is triggered in three-phase When gating controlling value is all effective, P7K are high level, when trigger region does not control invalidating signal to B phase, i.e. when P4B is equal to 1, with door FY23 exports high level, and triode VK3, VK4 are both turned on, and controlled source+VCCB obtains electric, B phase trigger circuit normal work, by B Mutually triggering gate control circuit triggers gating controlling value selection phase according to effective, corresponding with some voltage class section B phase The B phase Trig control signal answered is effective, and B phase trigger circuit is made to issue trigger pulse, controls bidirectional thyristor in B phase thyristor bridge On off operating mode, B phase main circuit is in compensation work state corresponding with the voltage class section.

In Figure 18, when three-phase triggering gating controlling value is all effective, P7K are high level, when trigger region does not control letter to C phase Number effectively, i.e. P4C be equal to 0 when, with door FY24 export low level, triode VK5, VK6 cut-off, controlled source+VCCC power loss, C Phase trigger circuit does not work, i.e., does not issue the trigger pulse for triggering bidirectional thyristor in C phase thyristor bridge, turn off C phase thyristor All bidirectional thyristors in bridge show that C phase AC power source phase voltage has fluctuation at this time, so that C phase is triggered gating controlling value and generate Variation needs to carry out the switching of bidirectional thyristor on off operating mode in C phase thyristor bridge, changes compensation way.It is triggered in three-phase When gating controlling value is all effective, P7K are high level, when trigger region does not control invalidating signal to C phase, i.e. when P4C is equal to 1, with door FY24 exports high level, and triode VK5, VK6 are both turned on, and controlled source+VCCC obtains electric, C phase trigger circuit normal work, by C Mutually triggering gate control circuit triggers gating controlling value selection phase according to effective, corresponding with some voltage class section C phase The C phase Trig control signal answered is effective, and C phase trigger circuit is made to issue trigger pulse, controls bidirectional thyristor in C phase thyristor bridge On off operating mode, C phase main circuit is in compensation work state corresponding with the voltage class section.

There is the triggering gating controlling value of a phase invalid in gating controlling value when three-phase triggers, protection driving unit issues protection Signal is controlled to three-phase main circuit, when three-phase thyristor bridge being made to be in open-circuit-protection state, three-phase AC voltage stabilizer is not to defeated Enter voltage to compensate, the voltage of voltage-stablizer output is the three-phase alternating-current supply phase voltage inputted.It is in and opens in thyristor bridge When the guard mode of road, if three-phase triggering gating controlling value full recovery is useful signal, driving unit is protected to be automatically stopped The open-circuit-protection state of three-phase thyristor bridge, three-phase thyristor bridge are in compensation work state again.

It is each mutually to trigger from above embodiment and its course of work it is found that when input gates controlling value for effective triggering Gate control circuit ensure that the same full-bridge circuit upper and lower bridge arm bidirectional thyristor of this phase thyristor bridge does not simultaneously turn on, that is, realize The mutual lock control of same full-bridge circuit upper and lower bridge arm bidirectional thyristor；And when triggering gating controlling value is invalid, protection driving Unit is in the power supply for cutting off trigger unit rapidly, on the basis of avoiding the conducting of bidirectional thyristor mistake from causing short circuit, simultaneously All bridge arms for disconnecting three-phase thyristor bridge, make three-phase thyristor bridge be in open-circuit-protection state.At three-phase thyristor bridge When open-circuit-protection state, if three-phase error detection differentiates that circuit judges three-phase AC voltage stabilizer reenters normal logic control It, then can be automatic when state, i.e. three-phase error detection differentiate that the triggering gating controlling value full recovery of circuit judges three-phase is useful signal Stop the open-circuit-protection state of three-phase thyristor bridge and it is made to be in compensation work state again.Above-mentioned function effectively strengthens Three-phase AC voltage stabilizer is directed to the protection of course of work exception, keeps the work of the three-phase AC voltage stabilizer relatively reliable.

In addition to the technical characteristic described in the specification, the other technologies of three-phase AC voltage stabilizer are that those skilled in the art are slapped The routine techniques held.

Claims (10)

1. a kind of three-phase alternating current pressure stabilizing control method, it is characterised in that: in each phase, by AC power source phase voltage waving interval model The voltage enclosed is divided into multiple voltage class sections to compensate control；The voltage class section of AC power source phase voltage is carried out Identification obtains triggering gating controlling value；It is selected and is made corresponding according to triggering gating controlling value by diode triggered gating matrix Trig control signal is effective, controls the on-off assembled state of thyristor in thyristor bridge；By the on-off of thyristor in thyristor bridge 01 in the multiple compensator transformers of assembled state control selections or multiple compensator transformers carry out electricity Pressure compensation, realizes voltage compensation state corresponding with voltage class section；Each voltage class section of AC power source phase voltage A corresponding voltage compensation state.

2. three-phase alternating current pressure stabilizing control method according to claim 1, it is characterised in that: in each phase, in thyristor bridge Between the different on-off assembled state of successive 2 kinds of middle thyristor, not trigger region time, the institute in cutoff thyristor bridge are maintained There is thyristor.

3. three-phase alternating current pressure stabilizing control method according to claim 2, it is characterised in that: in each phase, gated to triggering Whether controlling value is effectively differentiated；When in maintaining a not trigger region time state, or triggering gating controlling value without When effect, the power supply of trigger circuit is cut off, stops the trigger pulse for issuing the phase.

4. three-phase alternating current pressure stabilizing control method according to claim 3, it is characterised in that: described to maintain one in each phase A not trigger region time is realized by not trigger region control signal；Control not trigger region control signal triggering gate controlling value A pulse is exported after change；Trigger region control signal is not effective during exporting pulse, during non-output pulse In vain；When trigger region control signal is not effective, one not trigger region time is maintained.

5. the three-phase alternating current pressure stabilizing control method according to any one of claim 3-4, it is characterised in that: three-phase triggering choosing In logical controlling value, have one and more than one it is invalid when, control three-phase thyristor bridge is in open-circuit-protection state.

6. three-phase alternating current pressure stabilizing control method according to claim 5, it is characterised in that: in each phase, triggering gating control Value processed is M binary values；Differentiate whether triggering gating controlling value effective according to being, the position M two of triggering gating controlling value into In value processed, have and when only one effective, triggering gating controlling value is effective；Otherwise, triggering gating controlling value is invalid；The M is Integer more than or equal to 2.

7. three-phase alternating current pressure stabilizing control method according to claim 6, it is characterised in that: in each phase, control thyristor The Trig control signal of bridge is generated by the triggering gating controlling value control postponed；The signal of the triggering gating controlling value of delay changes Moment is later than after triggering gating controlling value changes the forward position moment of pulse in not trigger region control signal, and earlier than triggering Gating controlling value change after not trigger region control signal in pulse it is rear along the moment.

8. three-phase alternating current pressure stabilizing control method according to claim 7, it is characterised in that: in each phase, in thyristor bridge Share N number of thyristor；Diode triggered gating matrix includes that M root triggering gating controls alignment, N root triggers driving line and multiple Diode；M root triggering gating control alignment is corresponded with M triggering gating controlling values, and a triggering gating controlling value is corresponding Keep a triggering gating control alignment signal effective；N root triggering driving line and N number of thyristor correspond, and a triggering is driven Dynamic line signal effectively correspondence keeps the Trig control signal of a thyristor effective；Every triggering gating control alignment signal is effective When, correspond to the on-off assembled state of thyristor in a thyristor bridge；In every triggering gating control alignment and the alignment signal Correspond to on-off assembled state when effectively and needs to control the triggering of turn on thyristors and drives and be respectively provided with diode between line and connected It connects, when certain root triggering gating control alignment signal is effective, the triggering driving row for needing to control turn on thyristors is made by diode Line signal is effective.

9. three-phase alternating current pressure stabilizing control method according to claim 5, it is characterised in that: in each phase, to AC power source The voltage class section of phase voltage is identified, is obtained triggering gating controlling value and is realized by sampling comparison circuit；It samples more electric Road includes voltage comparator circuit between AC power source phase voltage sample circuit and multi-region, and AC power source phase voltage sample circuit will be handed over Galvanic electricity source phase voltage RMS-DC converter is AC power source phase voltage sampled value；Voltage comparator circuit is to AC power source phase between multi-region Voltage sample value is compared with M-1 threshold voltage, obtains M triggering gating controlling values.

10. three-phase alternating current pressure stabilizing control method according to claim 9, it is characterised in that: in each phase, voltage between multi-region Comparator circuit includes M-1 comparator, and M-1 comparator is all made of original power supply power supply；M-1 different threshold voltages point It is not connected to the non-inverting input terminal of M-1 comparator, AC power source phase voltage sampled value is connected to the anti-of M-1 comparator simultaneously Phase input terminal；In M-1 comparator, the minimum comparator of threshold voltage directlys adopt positive single supply and is powered, other compare Device is all made of controllable electric power and is powered；It is only lower than it in all threshold voltages when comparator is powered using controllable electric power When comparator all exports low level, controllable electric power is powered to its positive power source terminal, and otherwise controllable electric power stops to its positive electricity Source is powered；When comparator is powered using controllable electric power and controllable electric power stops being powered to its positive power source terminal, output Low level；M triggering gating controlling values are made of the output valve and highest section judgment value of M-1 comparator；When M-1 comparison When all low level of the output valve of device, highest section judgment value is high level, and otherwise, highest section judgment value is low level.