CN109189133A - AC voltage-stabilizing control method - Google Patents

AC voltage-stabilizing control method Download PDF

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Publication number
CN109189133A
CN109189133A CN201811355995.8A CN201811355995A CN109189133A CN 109189133 A CN109189133 A CN 109189133A CN 201811355995 A CN201811355995 A CN 201811355995A CN 109189133 A CN109189133 A CN 109189133A
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voltage
triggering
control
controlling value
triggering gating
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CN201811355995.8A
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CN109189133B (en
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刘建华
凌云
肖会芹
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Baise Power Supply Bureau of Guangxi Power Grid Co Ltd
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Hunan University of Technology
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/12—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC
    • G05F1/40—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electrical Variables (AREA)
  • Electronic Switches (AREA)

Abstract

A kind of AC voltage-stabilizing control method; by including compensation main circuit, sampling comparing unit, delay protection unit, triggering gating control cells, trigger unit, error detection judgement unit, the AC voltage regulator of driving unit being protected to realize, compensation main circuit includes compensator transformer group, thyristor bridge and relay protection switch.It samples comparing unit and voltage sample, output triggering gating controlling value is carried out to AC supply voltage；Gating control cells are triggered according to the triggering gating controlling value output Trig control signal after delay and by the on-off of bidirectional thyristor in trigger unit control thyristor bridge.The AC voltage-stabilizing control method is while realizing mutual lock control; also whether effectively start/stop the open-circuit-protection to thyristor bridge according to triggering gating controlling value by error detection judgement unit and protection driving unit; control the power supply of trigger unit; the protection for course of work exception is effectively strengthened, keeps work more stable, reliable.

Description

AC voltage-stabilizing control method
Technical field
The present invention relates to power technique fields, especially a kind of AC voltage-stabilizing control method.
Background technique
Existing compensation type ac voltage stabilizer, its advantage is that voltage stabilized range is wide, waveform is almost without distortion, overall efficiency Height, workload-adaptability are strong.Its principle is the height situation according to input voltage, automatically controls armature winding on compensator transformer The switching of different winding coils, using the no-load voltage ratio relationship of primary side Working winding and secondary windings, or by adjusting primary around The alive mode of institute, provides the voltage compensation of two-way multi gear, to realize the purpose of voltage-regulation voltage-stabilization in group.
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 controls of AC voltage-stabilizing Method, comprising:
The voltage of AC supply voltage waving interval range is divided into multiple voltage class sections to compensate control；It is right The voltage class section of AC supply voltage is identified, triggering gating controlling value corresponding with voltage class section is obtained；By 0 or 1 in thyristor bridge in the multiple compensator transformers of on-off assembled state control selections of thyristor, either Multiple compensator transformers carry out voltage compensation, realize voltage compensation state corresponding with voltage class section；AC power source electricity The corresponding voltage compensation state in each voltage class section of pressure.
Whether triggering gating controlling value is effectively differentiated, when triggering gating controlling value is invalid, controls thyristor bridge In open-circuit-protection state.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；The M is the integer more than or equal to 2.Further, the position in triggering gating controlling value has for 1 Effect is 0 invalid, i.e., the high level in triggering gating control value signal is effective, and low level is invalid；Either, triggering gating control Position in value be 1 invalid, i.e., the low level in triggering gating control value signal is effective, and high level is invalid 0 effectively；M triggerings It is effective to gate shared M triggering gating controlling value in controlling value.
The voltage class section of AC supply voltage is identified, obtains triggering gating controlling value by sampling comparing unit It realizes.Sampling comparing unit includes voltage comparator circuit between AC supply voltage sample circuit and multi-region, AC supply voltage AC supply voltage RMS-DC converter is AC supply voltage sampled value by sample circuit；Voltage comparator circuit is defeated between multi-region Entering voltage is AC supply voltage sampled value, and by input voltage, i.e. AC supply voltage sampled value is carried out with M-1 threshold voltage Compare, obtain M bit comparison output valve, M bit comparison output valve constitutes triggering gating controlling value.M-1 threshold voltage be respectively with The corresponding AC supply voltage sampled value of the intermediate separation value of M-1 of M voltage class section of AC supply voltage.It is electric between multi-region Pressing comparator circuit includes M-1 comparator, and the input voltage threshold voltage different from M-1 is compared, M ratios are exported Compared with output valve；M-1 comparator is all made of original power supply power supply.M-1 different threshold voltages are respectively connected to M-1 comparison The non-inverting input terminal of device, input voltage are connected to the inverting input terminal of M-1 comparator simultaneously.Voltage comparator exports between multi-region M bit comparison output valve high level it is effective, have in M bit comparison output valve and only an output valve be effective.M-1 comparator In, the minimum comparator of threshold voltage directlys adopt positive single supply and is powered, other comparators are all made of controllable electric power progress Power supply；When comparator is powered using controllable electric power, low level is all only exported in all threshold voltages comparator lower than it When, controllable electric power is powered to its positive power source terminal, and otherwise controllable electric power stops being powered to its positive power source terminal.Comparator is adopted With controllable electric power power supply and when controllable electric power stops being powered to its positive power source terminal, low level is exported.M bit comparison output valve by The output valve and highest section judgment value composition of M-1 comparator；When all low levels of the output valve of M-1 comparator, Highest section judgment value is high level, and otherwise, highest section judgment value is low level.
Voltage comparator circuit includes either M comparator between multi-region, by the input voltage threshold voltage different from M It is compared, exports M bit comparison output valve；M comparator is all made of original power supply power supply.M different threshold voltage difference It is connected to the non-inverting input terminal of M comparator, input voltage is connected to the inverting input terminal of M comparator simultaneously.It is electric between multi-region It presses the M bit comparison output valve high level of comparator output effective, has in M bit comparison output valve and only an output valve is effective.M In a comparator, the minimum comparator of threshold voltage directlys adopt positive single supply and is powered, other comparators are all made of controllably Power supply is powered；When comparator is powered using controllable electric power, output is terminated with pull down resistor, only in all threshold voltage ratios Its low comparator all output low level when, controllable electric power is powered to its positive power source terminal, otherwise controllable electric power stop to Its positive power source terminal is powered.Comparator is powered using controllable electric power and controllable electric power stops being powered to its positive power source terminal When, export low level.M bit comparison output valve is made of the output valve of M comparator.M different threshold voltages are respectively M The section upper voltage limit of section voltage.
Realize that comparator controllable electric power function of supplying power, the positive power source terminal of comparator are connected to the defeated of nor gate using nor gate Outlet, the input terminal of nor gate are respectively connected to the output end of all threshold voltages comparator lower than it.Voltage ratio between multi-region Compared with the comparator in device circuit preferably using the rail-to-rail amplifier of low-power consumption of single supply power supply.
The method of the on-off assembled state of thyristor is in triggering gating controlling value control thyristor bridge, by triggering gating control Unit processed gates controlling value according to effective triggering, is selected by diode triggered gating matrix and makes to trigger control letter accordingly Number effectively, control thyristor bridge in thyristor on-off assembled state.
N number of thyristor is shared 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 is corresponded with M triggering gating controlling values, and one Effective triggering gating controlling value is corresponding to keep a triggering gating control alignment signal effective；N root triggering driving line and N number of crystalline substance Brake tube corresponds, and a triggering driving line signal effectively correspondence keeps the Trig control signal of a thyristor effective；Triggering Control signal effectively makes corresponding turn on thyristors.The N is the integer more than or equal to 4.
When every triggering gating control alignment signal is effective, the on-off of thyristor combines shape in a corresponding thyristor bridge State；In every triggering gating control alignment and effective alignment signal, corresponding on-off assembled state needs to control turn on thyristors Triggering driving line between be respectively provided with diode and be attached, when certain root trigger gating control alignment signal it is effective when, by two Pole pipe keeps the triggering driving line signal for needing to control turn on thyristors effective.
Cause triggering gating controlling value to change in AC supply voltage fluctuation, needs to switch thyristor in thyristor bridge When in different on-off assembled states, between its successive 2 kinds of on-off assembled state, not trigger region time is maintained, is closed All thyristors in disconnected thyristor bridge.
The trigger region time is not realized by not trigger region control signal for the maintenance one；Trigger region control signal does not exist for control Triggering gating controlling value exports a pulse after changing；Trigger region control signal is not effective during exporting pulse, It is invalid during non-output pulse；When trigger region control signal is not effective, one not trigger region time is maintained.Further Ground, after triggering gating controlling value changes, not in trigger region control signal pulse spaced time 10ms extremely It is chosen between 30ms.
The Trig control signal for controlling thyristor bridge is generated by the triggering gating controlling value control postponed；The triggering of delay is selected The signal of logical controlling value changes the moment and is later than after triggering gating controlling value changes pulse in not trigger region control signal The forward position moment, and earlier than triggering gating controlling value change after not trigger region control signal in pulse it is rear along the moment.
Triggering gating controlling value is postponed, and generates the function of not trigger region control signal by delay protection unit It realizes；It is realized to whether triggering gating controlling value is effectively differentiated by error detection judgement unit, error detection judgement unit differentiates delay Whether triggering gating controlling value afterwards is effective, and output triggering gating controlling value differentiates signal.
The method is by including compensation main circuit, sampling comparing unit, delay protection unit, triggering gating control list Member, error detection judgement unit, protects the AC voltage regulator of driving unit to realize at trigger unit.Compensation main circuit includes that compensation becomes Depressor group, thyristor bridge；Trigger unit controls the logical of thyristor in main circuit thyristor bridge according to the Trig control signal of input It is disconnected.Whether protection driving unit effectively stops/starting the open-circuit-protection to thyristor bridge according to triggering gating controlling value, specifically Method is that, when triggering gating controlling value is invalid, control disconnects all upper bridge arms of thyristor bridge be in thyristor bridge and open Under the guard mode of road, or control disconnects all lower bridge arms of thyristor bridge to make thyristor bridge be in open-circuit-protection state Under；Thyristor bridge is under open-circuit-protection state, and the triggering gating controlling value of error detection judgement unit judgement input reverts to effectively When, protection driving unit is automatically stopped the open-circuit-protection state of thyristor bridge.
Triggering gating control cells include diode triggered gating matrix；A piece triggering driving line signal effectively correspondence makes The effective method of the Trig control signal of one thyristor is that N root triggering driving line signal is corresponded directly as N number of crystalline substance The Trig control signal of brake tube.A piece triggering driving line signal effectively correspondence keeps the Trig control signal of a thyristor effective Method either, the triggering gating control cells further include Trig control signal driving circuit；Trig control signal driving The input of circuit is the signal of N root triggering driving line, is exported as the Trig control signal of one-to-one N number of thyristor.
Protecting driving unit according to triggering gating controlling value, effectively and not whether trigger region control signal is effectively controlled The power supply of trigger unit processed, specific method be, only when triggering gating controlling value effectively and not trigger region control signal without When effect, the power supply of trigger unit is connected in control, and trigger unit works normally, and the Trig control signal according to input issues touching Send out pulse；Otherwise, the power supply of trigger unit is cut off, stops issuing all trigger pulses.
Thyristor in thyristor bridge is the brilliant lock that bidirectional thyristor or 2 unidirectional thyristor reverse parallel connections are formed Pipe alternating-current switch.
The beneficial effects of the present invention are: described steady using compensator transformer group and exchanging for thyristor bridge progress voltage compensation It presses control method to gate controlling value using an only effective, different triggering, is realized by diode triggered gating matrix Gating control to thyristor bridge various combination on off operating mode, and ensure that the same full-bridge circuit upper and lower bridge arm of thyristor bridge is brilliant Brake tube cannot simultaneously turn on, that is, realize the mutual lock control of same full-bridge circuit upper and lower bridge arm thyristor.At the same time, also into Mistake occurs when the voltage class section identification of row AC supply voltage, leads to the feelings for outputing invalid triggering gating controlling value Condition stops issuing trigger pulse and carries out the open-circuit-protection of thyristor bridge, effectively strengthens for the AC voltage-stabilizing course of work Abnormal protection；It, can if triggering gating controlling value is restored effectively when thyristor bridge is in open-circuit-protection state It is automatically stopped the open-circuit-protection state of thyristor bridge and it is made to be in compensation work state again；Not using single-chip microcontroller, PLC etc. Program mode (PM) controls the switching switching of thyristor, avoids voltage-stablizer failure caused by the problems such as program runs fast, crashes.It is above-mentioned Function keeps the course of work of the AC voltage-stabilizing control method more stable, reliable.
Detailed description of the invention
Fig. 1 is the AC voltage regulator composition block diagram for realizing AC voltage-stabilizing control method；
Fig. 2 is compensation main circuit embodiment 1；
Fig. 3 is compensation main circuit embodiment 2；
Fig. 4 is sampling comparing unit embodiment 1；
Fig. 5 is sampling comparing unit embodiment 2；
Fig. 6 is delay protection unit embodiment block diagram；
Fig. 7 is in delay detection module for the delay detection circuit embodiment 1 of triggering gating control value signal Y10；
Fig. 8 is in delay detection module for the delay detection circuit embodiment 2 of triggering gating control value signal Y10；
Fig. 9 is in delay detection module for the delay detection circuit embodiment 3 of triggering gating control value signal Y10；
Figure 10 is that trigger region does not control signal generator module embodiment；
Figure 11 is that split-phase closes waveform diagram in the middle part of delay protection unit；
Figure 12 is the trigger circuit embodiment that bidirectional thyristor SR1 is triggered in trigger unit；
Figure 13 is triggering gating control cells embodiment 1；
Figure 14 is triggering gating control cells embodiment 2；
Figure 15 is triggering gating control cells embodiment 3；
Figure 16 is error detection judgement unit embodiment；
Figure 17 is protection drive unit embodiment.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described.
Fig. 1 is the AC voltage regulator composition block diagram for realizing AC voltage-stabilizing control method, samples comparing unit to AC power source Voltage carries out voltage sample, output triggering gating controlling value P2；Delay protection unit input triggering gating controlling value P2, output are prolonged The triggering to lag gates controlling value P3 and not trigger region control signal P4；Triggering choosing after triggering gating control cells input delay Logical controlling value P3, exports Trig control signal P5；Trigger unit issues trigger signal P6 according to the Trig control signal P5 of input To compensation main circuit, the on-off of bidirectional thyristor in thyristor bridge is controlled；Triggering choosing after error detection judgement unit input delay Logical controlling value P3, output triggering gating controlling value differentiate signal P7；Protect driving unit input not trigger region control signal P4 and Triggering gating controlling value differentiates signal P7, differentiates whether signal P7 effectively stops/starting to crystalline substance according to triggering gating controlling value The open-circuit-protection of brake tube bridge, while differentiating whether effectively and not trigger region controls signal P4 to signal P7 according to triggering gating controlling value Whether the power supply effectively to control trigger unit.
Fig. 2 is compensation main circuit embodiment 1, and compensator transformer TB1, TB2 form compensator transformer group, 6 two-way crystalline substances Brake tube SR1-SR6 collectively constitutes thyristor bridge, and fuse FU1 and relay normally open switch KA-1, KA-2, KA-3, relay are normal Make and break closes KA-5, KA-6 and forms relay protection circuit.
In Fig. 2, the bucking coil of compensator transformer TB1, TB2 are connected in phase line, and phase line input terminal is LA1, output End is LA2.Voltage on TB1, TB2 magnet exciting coil is controlled by thyristor bridge.1 thyristor full-bridge circuit includes upper and lower 2 crystalline substances Brake tube bridge arm.In Fig. 2, the thyristor full-bridge circuit of SR1 and SR2 composition is connected to after one end of TB1, TB2 magnet exciting coil is in parallel, The other end of TB1, TB2 magnet exciting coil is respectively connected to the thyristor full-bridge circuit of SR3 and SR4, SR5 and SR6 composition.If TB1, The offset voltage of TB2 is not identical, does not consider the compensation way that offset voltage is cancelled out each other, then compensator transformer group at most shares just To TB1, forward direction TB2, forward direction TB1+TB2, reversed TB1, reversed TB2, reversed TB1+TB2 totally 6 kinds of voltage compensation states, additional one The AC supply voltage of 0 voltage compensation state when kind input voltage is within normal range (NR), phase line input terminal LA1 input can At most being divided into 7 voltage ranges compensates control.In Fig. 2, N is zero curve, and G11, G12 to G61, G62 are respectively two-way crystalline substance The trigger signal input terminal of brake tube SR1 to SR6.
Fig. 3 is compensation main circuit embodiment 2, and compensator transformer TB1, TB2, TB3 form compensator transformer group, and 8 double Thyristor bridge, fuse FU1 and relay normally open switch KA-1, KA-2, KA-3, KA-4 are collectively constituted to thyristor SR1-SR8, Relay normally closed switch KA-4, KA-5, KA-6 form relay protection circuit.
In Fig. 3, the bucking coil of compensator transformer TB1, TB2, TB3 are connected in phase line, and phase line input terminal is LA1, Output end is LA2.Voltage on TB1, TB2, TB3 magnet exciting coil is controlled by thyristor bridge, and the one of TB1, TB2, TB3 magnet exciting coil The thyristor full-bridge circuit of SR1 and SR2 composition is connected to after end is in parallel, the other end of TB1, TB2, TB3 magnet exciting coil connects respectively It is connected to the thyristor full-bridge circuit of SR3 and SR4, SR5 and SR6, SR7 and SR8 composition.If the offset voltage of TB1, TB2, TB3 are equal It is not identical, do not consider the compensation way that offset voltage is cancelled out each other, then compensator transformer group is at most shared 7 kinds positive, and reversed 7 Kind, totally 14 kinds of voltage compensation states, 0 voltage compensation state when a kind of additional input voltage is within normal range (NR), phase line is defeated The AC supply voltage for entering to hold LA1 to input can be at most divided into 15 voltage ranges and compensate control.In Fig. 3, N zero Line, G11, G12 to G81, G82 are respectively the trigger signal input terminal of bidirectional thyristor SR1 to SR8.
Each bidirectional thyristor in Fig. 2, Fig. 3 can be substituted with the unidirectional thyristor of 2 reverse parallel connections.Fig. 2, Fig. 3 In, relay normally open switch and relay normally closed switch composition relay protection switch.
The voltage of AC supply voltage waving interval range is divided into M voltage class section, samples comparing unit to friendship Stream supply voltage carries out voltage sample and obtains AC supply voltage sampled value, by M comparator to AC supply voltage sampled value It is compared, the triggering that output M-bit binary number is constituted gates controlling value；When AC supply voltage is in M voltage class area Between in one when, in M triggerings gating controlling values corresponding one effectively, other positions are invalid.M triggerings gate controlling value Significance bit is high level, i.e. binary one；Invalid bit is low level, i.e. Binary Zero；Either, M triggerings gate controlling value Significance bit is low level, i.e. Binary Zero；Invalid bit is high level, i.e. binary one.
Fig. 4 is sampling comparing unit embodiment 1, compensates control for compensation main circuit embodiment 1.AC power source In voltage sampling circuit, the AC supply voltage inputted from phase line LA1 and zero curve N is after transformer TV decompression, by diode The rectifier bridge rectification of DV1-DV4 composition, then divided through capacitor CV1 filtering and resistance RV1, RV2, obtain the AC power source with input The AC supply voltage sampled value U1 of voltage effective value direct proportionality.
Between the multi-region of Fig. 4 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 AC supply voltage sampled value U1 and 7 threshold value electricity The comparison of UF1-UF7 is pressed, the triggering gating controlling value P2 of output is made of the output Y11-Y17 of 7 comparator FA1-FA7, will The voltage of AC supply voltage waving interval range is divided into 7 voltage class section 1-7.Amplifier FA0 forms follower, alternating current Source voltage sample value U1 is sent simultaneously after follower FA0 driving to the inverting input terminal of comparator FA1-FA7；AC power source Voltage sample value U1 can also drive without follower FA0 and directly send simultaneously to the inverting input terminal of comparator FA1-FA7；7 Threshold voltage UF1-UF7 is sent respectively to the non-inverting input terminal of comparator FA1-FA7.In Fig. 4, other accurate electricity can also be used Power supply+VCC1 is replaced in source, and bleeder circuit divides precision voltage source, threshold voltage can be made more accurate.Amplifier FA0 and ratio The rail-to-rail amplifier of low-power consumption single supply power supply is preferably used compared with device FA1-FA7, for example, selection OPA317, AD8517, Single-pass track of the quiescent operations source current such as MCP6291, TLV2450, TLV2451, TLV2460, TLV2461 less than 1mA arrives Rail amplifier.
In Fig. 4, 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 AC supply voltage of input is low, when a minimum voltage class section 1 in 7 voltage class sections, Y11 is defeated High level out, all output is low level to nor gate FH2-FH7, and the single supply power supply of comparator FA2-FA7 is all to be connect Nearly 0V, output are close to 0V either high-impedance state, and resistance RB2-RB7 respectively draws output Y12-Y17 for low level.Work as input AC supply voltage not at a minimum voltage class section 1 in 7 voltage class sections, Y11 export low level or non- Door FH2 exports high level and provides power supply to comparator FA2, at this point, if the AC supply voltage of input is in voltage etc. When grade section 2, Y12 exports high level, and all output is low level to nor gate FH3-FH7, and the single supply of comparator FA3-FA7 supplies Power supply is all close to 0V, and output is close to 0V either high-impedance state, and resistance RB3-RB7 respectively draws output Y13-Y17 For low level.When the AC supply voltage of input is higher than voltage class section 2, Y11, Y12 export low level, nor gate FH2, FH3 export high level, provide power supply to comparator FA2, FA3 respectively, at this point, if the AC power source electricity of input When pressure is in voltage class section 3, Y13 exports high level, and all output is low level, comparator FA4- to nor gate FH4-FH7 The single supply power supply of FA7 is all close to 0V, and output is close to 0V either high-impedance state, and resistance RB4-RB7 respectively will Exporting Y14-Y17 and drawing is low level.The rest may be inferred, and when the AC supply voltage of input is in voltage class section 4, Y14 is defeated High level out, other outputs are low level；When the AC supply voltage of input is in voltage class section 5, the high electricity of Y15 output Flat, other outputs are low level；When the AC supply voltage of input is in voltage class section 6, Y16 exports high level, It is low level that he, which exports,；When the AC supply voltage of input is in voltage class section 7, Y17 exports high level, other outputs For low level.When nor gate FH2-FH7 selects 74HC series of high speed CMOS gate circuit, for example, 8 input nor gate of selection 74HC4078, three tunnels 3 input nor gate 74HC27, four tunnels 2 input nor gate 74HC02 etc. or 74HC series of high speed CMOS Or door add NOT gate realize nor gate function when, since the high level driving current of 74HC series of high speed CMOS can reach 4mA, foot Enough single channel rail-to-rail amplifier of the driving quiescent operation source current less than 1mA.The power supply of nor gate FH1-FH6 is power supply +VCC1。
If the AC supply voltage fluctuation range of input is 220V ± 10%, it is desirable that stablized the model in 220V ± 2% Enclose interior output.Comparing unit embodiment 1 is sampled using Fig. 4, input can be divided into section in 242V to the voltage between 198V 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 is risen lower than desired output voltage range Pressure compensation；1 voltage class section carries out 0 voltage compensation, i.e. uncompensation within desired output voltage range.6.4V Voltage range is not more than 220V ± 1.5%, meets requirement of the output control within 220V ± 2%；7 voltage class of 6.4V The corresponding AC supply voltage waving interval in section is 242.4V to 197.6V, covers the range actually fluctuated.It is mended using Fig. 2 It repays formula main circuit embodiment 1 to compensate, and TB1 offset voltage is low, TB2 offset voltage is high；The offset voltage of TB2 is TB1 benefit 2 times for repaying voltage, then when voltage is alternating current 220V on magnet exciting coil at this time, TB1 offset voltage is 6.4V, and TB2 offset voltage is 12.8V.Ratio phase between the selection and AC supply voltage sampled value U1 and AC supply voltage of threshold voltage UF1-UF7 It closes；If the ratio between AC supply voltage sampled value U1 and AC supply voltage is 0.01, i.e. AC supply voltage sampled value U1 is the 1% of AC supply voltage virtual value, and input is in 242V to the corresponding voltage sample value range of voltage between 198V 2.42V to 1.98V；When AC supply voltage is divided into 7 voltage class sections that section voltage swing is 6.4V, 7 threshold values Voltage UF7-UF1 is respectively 2.424V, 2.36V, 2.296V, 2.232V, 2.168V, 2.104V, 2.04V, respectively with will The voltage sample value that 242.4V divides into 7 voltage class section upper limit values to 197.6V range of voltages is corresponding；According to 7 threshold values The size of voltage UF1-UF7 and+VCC1 can 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. 4 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. 4, when the AC supply voltage of input is lower than minimum voltage levels section model When enclosing, output signal corresponding with minimum voltage levels section is effective in the triggering gating controlling value of output, i.e. output has for Y11 Effect；Main circuit is in minimum voltage levels section according to the AC supply voltage of input and carries out corresponding voltage step-down benefit at this time It repays.When the AC supply voltage of input is higher than maximum voltage grade interval range, own in the triggering gating controlling value of output Signal is invalid, and main circuit is without voltage compensation at this time.If removing the comparison in the sampling comparing unit embodiment 1 of Fig. 4 6 threshold voltage UF6-UF1 of device FA7, comparator FA6-FA1 are constant, for the AC power source with 7 voltage class sections of separation The intermediate dividing voltage value of 7 of the corresponding voltage sample value of voltage value；Directly by the output signal of nor gate FH7, i.e. highest Interval judgement value Y17-1 is as the Y17 in triggering gating controlling value, then when the AC supply voltage of input is at or above most It is that Y17 output is effective, and main circuit is in maximum voltage according to the AC supply voltage of input when big voltage class interval range Grade interval carries out corresponding voltage step-down compensation.
The embodiment 1 of Fig. 4 can also be carried out for compensation main circuit embodiment 2, at this time, it may be necessary to by AC supply voltage The voltage of waving interval range is divided into more voltage class sections.For example, by the electricity of AC supply voltage waving interval range When pressure is divided into 15 voltage class sections, the circuit of Fig. 4 should extend to 15 comparators, with 15 threshold value electricity of different sizes Pressure is compared；14 comparators are either used, are compared with 14 threshold voltages of different sizes；The triggering of output is selected Logical controlling value P2 will be by 15, for example, Y11-Y115 is formed.
Fig. 5 is sampling comparing unit embodiment 2, for compensating control for compensation main circuit embodiment 2.Fig. 5 In, FD1 is that real available value detects device LTC1966, LTC1966 and transformer TV1, capacitor CV2, capacitor CV3 composition alternating current Source voltage sampling circuit measures the AC supply voltage inputted from phase line LA1 and zero curve N, obtains AC supply voltage Sampled value U2.UIN1, UIN2 of LTC1966 is alternating voltage difference input terminal, and USS is the negative supply input terminal that can be grounded, UDD is positive power input, and GND is ground terminal, and EN is that low level effectively enables control signal, and UOUT is voltage output end, COM is output voltage return terminal.
In Fig. 5, 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 and the positive input terminal for being respectively connected to internal 10 comparators, by AC supply voltage waving interval model The voltage enclosed is divided into 10 voltage class section 1-10.6 feet are that internal voltage divider circuit is high-end, are connected in 7 feet through resistance RD1 Ministerial standard power supply exports 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 terminal is connected to AC supply voltage sampled value U2, is connected internally to the negative input end of 10 comparators；10-18 foot, 1 foot The signal L10 to L1 of output is with the output of 10 comparators as a result, wherein L10 comparative threshold voltage highest, successively reduces, L1 Comparative threshold voltage is minimum；The equal low level of L1 to L10 is effective；The scheme control end of 9 feet is hanging, realizes that L1's to L10 is dotted defeated Out, i.e., single low level output is effective.In Fig. 5, internal voltage divider circuit is high-end can also to be connected to other power supplys through resistance RD1, For example, power supply+VCC1.
In Fig. 5,10 phase inverter FB1-FB10 for carrying out reverse phase respectively to output signal L1-L10, obtain 10 two into Y11-Y110 processed is formed, high level effectively triggers gating controlling value P2.AC supply voltage is in 10 voltage class areas Between one in 1-10 when, corresponding one is high level in Y11-Y110, other positions are low level.For example, when the friendship of input When stream supply voltage is in voltage class section 10, Y110 exports high level, other outputs are low level；When the alternating current of input When source voltage is in voltage class section 9, Y19 exports high level, other outputs are low level；When the AC supply voltage of input When in voltage class section 5, Y15 exports high level, other outputs are low level；When the AC supply voltage of input is in electricity When pressing grade interval 1, Y11 exports high level, other outputs are low level.The phase inverter FB1-FB10 cancelled in Fig. 5 directly makes When output signal L1-L10 being used to gate controlling value Y11-Y110 as triggering, triggering gating controlling value low level is effective.Phase inverter FB1-FB10 is all made of power supply+VCC1 power supply.
10 comparators inside LM3914 are used in Fig. 5, by the AC supply voltage waving interval range of input Voltage relatively divides into 10 voltage class sections.If the AC supply voltage fluctuation range of input is 220V+10% to 220V- 20%, it is desirable that stablized and exported in the range of 220V ± 2%.Using the sampling comparing unit embodiment 2 of Fig. 5, will input It is divided into 10 voltage class sections that section voltage swing is 7V, 3 voltage therein etc. in 242V to the voltage between 176V The voltage in grade section is higher than desired output voltage range, needs to carry out drop compensation；The voltage in 6 voltage class sections is lower than It is required that output voltage range, need to carry out boosting compensation；1 voltage class section within desired output voltage range, Carry out 0 voltage compensation, i.e. uncompensation.The voltage range of 7V is 220V ± 1.6%, meets output control within 220V ± 2% Requirement, the corresponding AC supply voltage waving interval in 10 voltage class sections of 7V is 244.5V to 174.5V, is covered The range actually fluctuated.It is compensated using the compensation main circuit embodiment 2 of Fig. 3, and TB1 offset voltage is minimum, TB3 compensation electricity Press highest；The offset voltage of TB2 is 2 times of TB1 offset voltage, and the offset voltage of TB3 is 2 times of TB2 offset voltage, then at this time When voltage is alternating current 220V on magnet exciting coil, TB1 offset voltage is 7V, and TB2 offset voltage is 14V, and TB3 offset voltage is 28V. Ratio between the selection and AC supply voltage sampled value U2 and AC supply voltage of threshold voltage is related；If AC power source is electric Pressing the ratio between sampled value U2 and AC supply voltage is 0.005, i.e. AC supply voltage sampled value U2 is AC power source electricity Be pressed with the 0.5% of valid value, then when AC supply voltage being divided into 10 voltage class sections that section voltage swing is 7V, input It is 1.21V to 0.88V in 242V to the corresponding voltage sample value range of voltage between 176V；10 threshold voltages are respectively 1.1875V、1.1525V、1.1175V、1.0825V、1.0475V、1.0125V、0.9775V、0.9425V、0.9075V、 0.8725V, the voltage with the lower limit value that 244.5V to 174.5V range of voltages is divided into 10 voltage class sections is adopted respectively Sample value is corresponding；The high-end voltage of internal voltage divider circuit is connected to highest comparator positive input terminal, therefore 6 foot voltages are 1.1875V.According to The size of 10 threshold voltages and internal standard power supply output VREF (1.2V or 1.25V), and internal 10 accurate electricity The size of resistance can calculate the size of resistance RD1, RD2.If it is required that improving the precision either input voltage of voltage compensation Fluctuation range it is bigger, it is desirable that voltage class is divided into more voltage class sections by the sampling comparing unit embodiment 2 of Fig. 5 When, for example, it is desired to can be used 2 when the voltage of AC supply voltage waving interval range is divided into 15 voltage class sections LM3914 is realized, the internal voltage divider circuit in 2 LM3914 is connected, and forms 20 comparative threshold voltages, is constituted 20 grades and is compared Device circuit；15 grades therein are selected to compare output, the triggering gating controlling value P2 of output will be by 15, for example, Y11-Y115 group At.
In the sampling comparing unit embodiment 2 of Fig. 5, when the AC supply voltage of input exceeds maximum voltage grade interval model When enclosing, the triggering gating controlling value of output is that output signal corresponding with maximum voltage grade interval is effective, i.e. output is Y110 Effectively, main circuit is in maximum voltage grade interval according to AC supply voltage and carries out corresponding voltage step-down compensation.Work as input AC supply voltage be lower than minimum voltage levels interval range when, output triggering gating controlling value in all equal nothings of signal Effect, main circuit is without voltage compensation at this time.
10 comparators inside LM3914 in 10 comparators have been used in Fig. 5, and AC supply voltage is compared into differentiation For 10 voltage class sections.It can be only with 9 comparators in the comparator of the inside LM3914 10, by AC supply voltage Compare and divides into 10 voltage class sections；For example, the comparative threshold voltage of each comparator does not change, the comparison of 9 comparators Threshold voltage is 9 centres point of voltage sample value corresponding with the AC supply voltage value in 10 voltage class sections is separated Every voltage value；Without being selected as the Y11 in triggering gating controlling value, Y11 by triggering after the output L1 reverse phase of LM3914 in Fig. 5 The Y12-Y110 gated in controlling value controls generation, i.e., when Y12-Y110 is all invalid, keeps Y11 effective, otherwise, keep Y11 invalid； At this point, the triggering of output gates control when the AC supply voltage of input is in or exceeds maximum voltage grade interval range Value processed is that Y110 is effective, and main circuit is in maximum voltage grade interval according to AC supply voltage and carries out corresponding voltage step-down benefit It repays；It is that Y11 output is effective when the AC supply voltage of input is at or below minimum voltage levels interval range, it is main Circuit is in minimum voltage levels section according to the AC supply voltage of input and carries out corresponding boost in voltage compensation.
The sampling comparing unit embodiment 2 of Fig. 5 can also compensate control for compensation main circuit embodiment 1, this When only the voltage of the AC supply voltage waving interval range of input need to be divided into no more than 7 voltage class sections, that is, select Select the comparison output wherein no more than 7 grades.
In addition to the sampling comparing unit embodiment of Fig. 4 or Fig. 5, either implement for compensation main circuit embodiment 1 When example 2 compensates control, it is also an option that other AC supply voltage sample circuits and comparison circuit, realize the function of requirement Energy.The AC supply voltage sampled value U1 of Fig. 4 AC supply voltage sample circuit output, can send to voltage between the multi-region of Fig. 5 Comparator circuit is compared, output triggering gating controlling value；The AC power source electricity of Fig. 5 AC supply voltage sample circuit output Sampled value U2 is pressed, can send to voltage comparator circuit between the multi-region of Fig. 4 and be compared, output triggering gating controlling value.
Fig. 6 is delay protection unit embodiment block diagram, wherein delay detection module YC1 respectively gates the triggering of input Controlling value Y11-Y1M carries out triggering gating controlling value Y21-Y2M, Y21-Y2M after signal delay is postponed and forms P3；YC1 Module carries out Edge check to the signal Y11-Y1M of triggering gating controlling value respectively simultaneously and obtains Edge check signal Y31-Y3M； The Edge check signal Y31-Y3M of input is not converted to not trigger region and controls signal by trigger region control signal generator module YC2 P4 output.In the embodiment block diagram of Fig. 6, the input of delay detection module YC1 is that sampling comparing unit embodiment 1 exports in Fig. 4 Triggering gate controlling value when, M be equal to 7；In the embodiment block diagram of Fig. 6, the input of delay detection module YC1 is to sample in Fig. 5 When the triggering that comparing unit embodiment 2 exports gates controlling value, M is equal to 10.
Fig. 7 is the delay detection circuit embodiment 1 for gating control value signal Y11 in delay detection module needle to triggering.Electricity Hinder 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, and phase inverter FY1's is defeated Out in signal YP1, 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, the output letter of phase inverter FY3 In number YP2, the pulse of corresponding negative pulse form is exported after Y11 failing edge.NAND gate FY4 is accomplished that negative patrol Collect or logic function, when there is negative pulse generation in input signal Y P1, YP2, the Edge check signal of NAND gate FY4 output Positive pulse is generated in Y31, i.e., when input signal Y 11 changes, NAND gate FY4 exports the pulse of a positive pulse form. In Fig. 7, the device of driving gate FY0, phase inverter FY1, phase inverter FY3 preferably with Schmidt's input, for example, phase inverter selects 74HC14, CD40106 etc.；Driving gate FY0 can be made of 2 phase inverters with Schmidt's input.
Fig. 8 is the delay detection circuit embodiment 2 for gating control value signal Y11 in delay detection module needle to triggering.Instead Phase device 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 negative logic or logic function, when input signal Y P1, YP2 In when having negative pulse generation, generate positive pulse in the Edge check signal Y31 of NAND gate FY9 output, i.e., when input signal Y 11 has When variation, NAND gate FY9 exports the pulse of a positive pulse form.In Fig. 8, phase inverter FY6, NAND gate FY7 or door FY8 It is preferred that the device with Schmidt's input, for example, phase inverter selects 74HC14, CD40106 etc.；NAND gate selection 74HC132, CD4093 etc.；Or door selects 74HC7032, or 2 phase inverters with Schmidt's input of selection and 1 NAND gate to come in fact Existing or door function.
Fig. 9 is the delay detection circuit embodiment 3 for gating control value signal Y11 in delay detection module needle to triggering, In the rising edge detection circuit for input signal Y 11 formed by resistance RY1, capacitor CY1, diode DY1, phase inverter FY1, and Failing edge detection circuit for input signal Y 11 is formed by resistance RY2, capacitor CY2, diode DY2, phase inverter FY2, FY3, And it is identical as the embodiment 1 of Fig. 7 using the circuit of NAND gate FY4 output Edge check signal Y31.In Fig. 9, by phase inverter FY11, FY12, FY13, FY14 realize the signal delay of Y11 is obtained Y11 it is delayed after signal Y21.
The embodiment 1-3 of Fig. 7, Fig. 8, Fig. 9 are the delay detection electricity for the signal Y11 in triggering gating controlling value Road is inputted for the delay detection circuit of other signals Y12-Y1M in triggering gating controlling value with being directed in corresponding embodiment Signal Y11 carries out the circuit structure of delay detection as function.Delay detection circuit can also use other met the requirements Circuit realizes its function.
Trigger region, which does not control the function of signal generator module, is, when the Edge check for triggering gating controlling value of input Any one of signal is multiple when having pulse relevant to edge, does not export one in trigger region control signal Pulse.Figure 10 is that trigger region does not control signal generator module embodiment, realizes phase by the nor gate FY10 for including M input The function of answering, the input signal of nor gate FY10 are Edge check signal Y31-Y3M, export and control signal P4 for not trigger region. In Figure 10 embodiment, the pulse of trigger region control signal output is not negative pulse, i.e., trigger region control signal low level does not have Effect；Nor gate FY10 is changed into or when door, the pulse of trigger region control signal output is positive pulse.If the edge of input The pulse relevant to edge that has generated in detection signal Y31-Y3M is negative pulse, then the nor gate FY10 in Figure 10 should NAND gate is changed to either with door, realizes under negative logic or logic function.
All gate circuits in delay protection unit are all made of single supply+VCC1 power supply.Figure 11 is in delay protection unit Part waveform correlation schematic diagram.From principle and the requirement of sampling comparing unit it is found that its triggering exported gates controlling value When normal change, change each time with 2.In Figure 11, a rising edge occurs respectively for the Y11 in triggering gating controlling value Change and failing edge changes, Y21 is the triggering gating controlling value after the Y11 delay T1 time；Implement in the delay detection circuit of Fig. 7 In example 1, T1 is determined by the product size (i.e. time constant size) of resistance RY0 and capacitor CY0；In the delay detection circuit of Fig. 8 In embodiment 2, T1 is determined by the product size of resistance RY3 and capacitor CY3；In the delay detection circuit embodiment 3 of Fig. 9, T1 It is determined by the gate delay time size of phase inverter FY11, FY12, FY13, FY14 itself.In Figure 11, because Y11 rises in signal YP1 It is T2 along the negative pulse width generated；In the delay detection circuit embodiment 1 of Fig. 7 and the delay detection circuit embodiment 3 of Fig. 9 In, T2 is determined by the product size of resistance RY1 and capacitor CY1；In the delay detection circuit embodiment 2 of Fig. 8, T2 is by resistance The product size of RY3 and capacitor CY3 determines.In Figure 11, because the negative pulse width that Y11 failing edge generates is T3 in signal YP2；? In the delay detection circuit embodiment 1 of Fig. 7 and the delay detection circuit embodiment 3 of Fig. 9, T3 is multiplied by resistance RY2 and capacitor CY2's Product size determines；In the delay detection circuit embodiment 2 of Fig. 8, T3 is determined by the product size of resistance RY3 and capacitor CY3.Figure In 11,2 positive pulses in Edge check signal Y31 respectively with the negative pulse and signal that generate in signal YP1 by Y11 rising edge Because the negative pulse that Y11 failing edge generates corresponds in YP2.The Y11 being located in Figure 11 triggering gating controlling value occurs rising edge and changes When, triggering gates the Y12 in controlling value and failing edge change occurs, its corresponding Edge check signal Y32 accordingly generates one at this time A positive pulse；If a rising edge occurs simultaneously and changes by the Y12 in triggering gating controlling value when failing edge, which occurs, for Y11 changes, A positive pulse is accordingly generated in its corresponding Edge check signal Y32 at this time；During this period, other touchings except Y11, Y12 There is no variation, edges corresponding with other triggering gating control value signals except Y11, Y12 to examine for hair gating control value signal Surveying signal is low level, is not drawn into Figure 11.According to not trigger region above-mentioned control signal generator module or logic function, The simple venation is not generated jointly in the single pulse width of trigger region control signal generator module output and the Edge check signal of input Widest pulse width is identical in the input pulse of punching, and this width difference is because determining T2, T3 in different delayed time detection circuit Resistance, capacitance difference caused by.In Figure 11, the 1st positive pulse in the 1st positive pulse ratio Y32 in Y31 is wide, Y31 In the 2nd positive pulse ratio Y32 in the 2nd positive pulse it is narrow, not trigger region control signal P4 in the 1st negative pulse width with The 1st positive pulse width in Edge check signal Y31 is consistent, not the 2nd negative pulse width in trigger region control signal P4 It is consistent with the 2nd positive pulse width in Edge check signal Y32.
In the delay detection circuit embodiment 1 of Fig. 7 delay protection unit, triggering gating controlling value changes to correspondence Not trigger region control signal pulse forward position delay time be gate circuit FY1, FY4 and Figure 10 in FY10 delay time The sum of or gate circuit FY3, FY4 and Figure 10 in FY10 the sum of delay time；By the product of resistance RY0 and capacitor CY0 The range of choice of the signal delay time T1 for the triggering gating controlling value that size determines is the ms order of magnitude, it is clear that is greater than triggering choosing Logical controlling value changed to the delay time in corresponding not trigger region control signal pulse forward position, i.e. triggering gating controlling value Signal delay is later than the forward position moment of the pulse exported after triggering gating controlling value changes at the time of change.It is stringent next It says, T1 actually includes the sum of lag time and the delay time of gate circuit FY0 caused by resistance RY0 and capacitor CY0. In Fig. 7 embodiment 1, in selection parameter, the value of the value and T3 that make T2 is all larger than the value of T1, makes triggering gating control value signal After meeting the not trigger region control signal pulse exported after changing earlier than triggering gating controlling value at the time of delay changes Along the requirement at moment.
It is delayed in detection circuit embodiment 2 in the delay protection unit of Fig. 8, triggering gating controlling value changes to right When the delay time in the not trigger region control signal pulse forward position answered is the delay of FY10 in gate circuit FY7, FY9 and Figure 10 Between the sum of or gate circuit FY8, FY9 and Figure 10 in FY10 the sum of delay time；T1 is the numerical value of the ms order of magnitude, is shown So, the signal delay time T1 of the triggering gating controlling value determined at this time by the product size of resistance RY3 and capacitor CY3 is greater than touching Hair gating controlling value changed to the delay time in corresponding not trigger region control signal pulse forward position, the i.e. control of triggering gating Value signal delay processed is later than the forward position moment of the pulse exported after triggering gating controlling value changes at the time of change.Fig. 8 Delay detection circuit embodiment 2 in, triggering gating controlling value signal delay change at the time of with triggering gating controlling value The rear of the pulse exported after change is influenced by signal YP0 change along the moment；Triggering gating controlling value signal delay changes At the time of change for signal YP0 after delay again through gate circuit FY6；The pulse that triggering gating controlling value exports after changing It is rear along the moment be the sum of delay time again through FY10 in gate circuit FY7, FY9 and Figure 10, or letter after signal YP0 changes The sum of delay time again through FY10 in gate circuit FY8, FY9 and Figure 10 after number YP0 changes；Obviously, triggering gating control at this time The rear of pulse exported after changing at the time of value signal delay changes than triggering gating controlling value few passes through 2 along the moment The delay time of gate circuit, controlling value need to be gated earlier than triggering by meeting at the time of triggering gating controlling value signal delay changes The rear requirement along the moment of the pulse exported after change.
Figure 12 is the compensation main circuit embodiment 1 of Fig. 2 to be triggered in trigger unit, or trigger the compensation main circuit of Fig. 3 The trigger circuit embodiment of bidirectional thyristor SR1 in embodiment 2, is made of altemating trigger optocoupler UG1, resistance RG1, resistance RG2, Trig control signal P51 low level is effective.Altemating trigger optocoupler UG1 can choose MOC3022, MOC3023, MOC3052, The phase shifts type bidirectional thyristor output photoelectric coupler such as MOC3053.Power supply+VCCK is the controlled electricity of protected driving unit control Source.Trigger bidirectional thyristor SR2-SR6 in the compensation main circuit embodiment 1 of Fig. 2, or the compensation main circuit reality of triggering Fig. 3 The trigger circuit of bidirectional thyristor SR2-SR8 in example 2 is applied as the circuit structure of triggering bidirectional thyristor SR1.The friendship of Figure 12 The stream triggering optocoupler UG1 triggering arteries and veins that other altemating trigger optocouplers export from G11, G12 trigger pulse exported and trigger unit Punching collectively constitutes trigger signal P6.
Figure 13 is the embodiment 1 for triggering gating control cells, compensates control for the compensation main circuit embodiment 1 of Fig. 2 System；TB1 offset voltage is low in Fig. 2, and TB2 offset voltage is high, and AC supply voltage fluctuation range is 220V ± 10%, it is desirable that by it Stabilization exports in the range of 220V ± 2%.In Figure 13, the triggering of triggering gating control cells input gates controlling value Y21- Y27 high level is effective, 21 diode D11-D73, triggering gating control alignment Y21-Y27, triggering driving line VK1-VK6 group Matrix is gated at diode triggered, resistance RS1-RS6, triode VS1-VS6 form the driving electricity of Trig control signal P51-P56 Road forms Trig control signal P5 by P51-P56 at this time.
Table 1 is the triggering gating control function table for triggering gating control cells embodiment 1, lists 7 triggering gatings 7 significance bits in controlling value, i.e., bidirectional thyristor is logical in thyristor bridge corresponding to 7 effective triggering gating controlling values Disconnected assembled state.7 effective triggering gating controlling values are corresponding with voltage class section 1-7, trigger gating control cells foundation The on off operating mode that triggering gating controlling value controls bidirectional thyristor in compensation main circuit embodiment 1 carries out corresponding voltage benefit It repays；In table 1,1 represents corresponding bidirectional thyristor need to be in the conductive state, and 0, which represents corresponding bidirectional thyristor, is off shape State.
The function connects that diode triggered gating matrix in Figure 13 is required according to table 1, are gated controlling value Y21- by triggering The control of Y27；I.e. when every triggering gating control alignment is effective with its, corresponding on-off assembled state needs to be connected two-way brilliant lock It is respectively provided with diode between the triggering driving line of pipe to be attached, when certain root triggering gating control alignment is effective, by two poles Pipe keeps the triggering driving line signal for needing to be connected bidirectional thyristor effective.For example, input voltage be minimum voltage class 1, That is when Y21 is effectively high level, diode D11, D12, D13 in triggering gating matrix are connected, triggering driving line VK1, VK4, VK6 control triode VS1, VS4, VS6 conducting for high level respectively makes P51, P54, P56 effectively 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 high level, in triggering gating matrix Diode D21, D22, D23 conducting, triggering driving line VK1, VK3, VK6 be high level control respectively triode VS1, VS3, VS6 conducting makes P51, P53, P56 effectively go to open bidirectional thyristor SR1, SR3, SR6, other two poles in triggering gating matrix Pipe cut-off, control shutdown bidirectional thyristor SR2, SR4, SR5, only makes TB2 carry out positive compensation；Input voltage be voltage class 4, That is when Y24 is effectively high level, diode D41, D42, D43 in triggering gating matrix are connected, triggering driving line VK1, VK3, VK5 control triode VS1, VS3, VS5 conducting for high level respectively makes P51, P53, P55 effectively go to open bidirectional thyristor SR1, SR3, SR5, triggering gate other diodes cut-off in matrix, and control shutdown bidirectional thyristor SR2, SR4, SR6 are realized 0 voltage compensation, i.e. TB1, TB2 are without compensation；Input voltage is voltage class 5, i.e. Y25 when being effectively high level, triggering Diode D51, D52, D53 conducting in matrix are gated, triggering driving line VK2, VK3, VK6 are that high level controls three poles respectively Pipe VS2, VS3, VS6 conducting make P52, P53, P56 effectively go to open bidirectional thyristor SR2, SR3, SR6, and triggering gates in matrix Other diodes cut-off, control shutdown bidirectional thyristor SR1, SR4, SR5, only make TB1 carry out Contrary compensation；Input voltage is When voltage class 7, i.e. Y27 are effectively high level, diode D71, D72, D73 in triggering gating matrix are connected, triggering driving Line VK2, VK3, VK5 be high level control respectively triode VS2, VS3, VS5 conducting make P52, P53, P55 effectively go to open it is double To thyristor SR2, SR3, SR5, other diodes in triggering gating matrix end, control shutdown bidirectional thyristor SR1, SR4, SR6, TB1, TB2 carry out Contrary compensation；Etc..
Table 1
Figure 14 is the embodiment 2 for triggering gating control cells, is equally mended for the compensation main circuit embodiment 1 of Fig. 2 Repay control；TB1 offset voltage is low in Fig. 2, and TB2 offset voltage is high, and the offset voltage of TB2 is 2 times of TB1 offset voltage；Exchange Mains fluctuations range is 220V ± 10%, it is desirable that is stablized and is exported in the range of 220V ± 2%.In Figure 14, triggering The triggering gating controlling value Y21-Y27 low level of gating control cells input is effective, 21 diode D11-D73, triggering gating Alignment Y21-Y27, triggering driving line P51-P56 composition diode triggered gating matrix are controlled, it is direct by triggering gating matrix Export the effective Trig control signal P51-P56 of low level.There is no the driving of Trig control signal P51-P56 in the present embodiment 2 Circuit.
The function connects that diode triggered gating matrix in Figure 14 is required according to table 1, are gated controlling value Y21- by triggering The control of Y27；For example, input voltage is minimum voltage class 1, i.e. Y21 when being effectively low level, in triggering gating matrix Diode D11, D12, D13 conducting, make respectively P51, P54, P56 become effective low level go to open bidirectional thyristor SR1, SR4, SR6, triggering gating matrix in other diodes cut-off, control shutdown bidirectional thyristor SR2, SR3, SR5, make TB1, TB2 carries out positive compensation；Input voltage is voltage class 2, i.e. Y22 when being effectively low level, two in triggering gating matrix Pole pipe 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 carry out TB2 Forward direction compensation；Input voltage is voltage class 4, i.e. Y24 when being effectively low level, diode D41 in triggering gating matrix, D42, D43 conducting, make P51, P53, P55 become effective low level respectively and go to open bidirectional thyristor SR1, SR3, SR5, trigger Other diodes cut-off in matrix is gated, controls and turns off bidirectional thyristor SR2, SR4, SR6,0 voltage compensation of realization, i.e. TB1, TB2 is without compensation；Input voltage is voltage class 5, i.e. Y25 when being effectively low level, two poles in triggering gating matrix Pipe 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 carry out TB1 Contrary compensation；Input voltage is voltage class 7, i.e. Y27 when being effectively low level, diode D71 in triggering gating matrix, D72, D73 conducting, make P52, P53, P55 become effective low level respectively and go to open bidirectional thyristor SR2, SR3, SR5, trigger Other diodes cut-off in matrix is gated, control shutdown bidirectional thyristor SR1, SR4, SR6, TB1, TB2 are reversely mended It repays；Etc..
In Figure 14, the low level in triggering 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 current of 30mA is needed； Whens altemating trigger optocoupler selects MOC3023, MOC3053 etc., the driving current of 15mA is needed.
Figure 15 is the embodiment 3 for triggering gating control cells, compensates control for the compensation main circuit embodiment 2 of Fig. 3 System；TB1 offset voltage is minimum in Fig. 3, TB3 offset voltage highest；And the offset voltage of TB2 is 2 times of TB1 offset voltage, TB3 Offset voltage be 2 times of TB2 offset voltage.AC supply voltage fluctuation range is 220V+10% to 220V-20%, it is desirable that Stablized and is exported in the range of 220V ± 2%.In Figure 15, the triggering of triggering gating control cells input gates controlling value Y21-Y210 high level is effective, 40 diode D01-D94, triggering gating control alignment Y21-Y210, triggering driving line VK1-VK8 forms diode triggered and gates matrix, and resistance RS1-RS8, triode VS1-VS8 form Trig control signal P51- The driving circuit of P58 forms Trig control signal P5 by P51-P58 at this time.
Table 2 is the triggering gating control function table for triggering gating control cells embodiment 3, lists 10 triggering gatings 10 significance bits in controlling value, i.e., 10 effective triggerings gate bidirectional thyristor in thyristor bridge corresponding to controlling values On-off assembled state.10 effective triggering gating controlling values are corresponding with voltage class 1-10, trigger gating control cells foundation The on off operating mode that triggering gating controlling value controls bidirectional thyristor in compensation main circuit embodiment 2 carries out corresponding voltage benefit It repays；In table 2,1 represents corresponding bidirectional thyristor need to be in the conductive state, and 0, which represents corresponding bidirectional thyristor, to be off State.The function connects that diode triggered gating matrix in Figure 15 is required according to table 2, are gated controlling value Y21-Y210 by triggering Control；For example, input voltage is voltage class 7, i.e. Y27 when being effectively high level, the diode in triggering gating matrix D71, D72, D73, D74 conducting, triggering driving line VK1, VK3, VK5, VK7 be high level control respectively triode VS1, VS3, VS5, VS7 conducting make P51, P53, P55, P57 effectively go to open bidirectional thyristor SR1, SR3, SR5, SR7, triggering gating matrix In the cut-off of other diodes, turn off bidirectional thyristor SR2, SR4, SR6, SR8, realize 0 voltage compensation, i.e. TB1, TB2, TB3 Without compensation；Input voltage is voltage class 8, i.e. Y28 when being effectively high level, the diode in triggering gating matrix D81, D82, D83, D84 conducting, triggering driving line VK2, VK3, VK6, VK8 be high level control respectively triode VS2, VS3, VS6, VS8 conducting make P52, P53, P56, P58 effectively go to open bidirectional thyristor SR2, SR3, SR6, SR8, triggering gating matrix In other diodes cut-off, turn off bidirectional thyristor SR1, SR4, SR5, SR7, make TB1 carry out Contrary compensation；Input voltage is When voltage class 9, i.e. Y29 are effectively high level, diode D91, D92, D93, D94 in triggering gating matrix are connected, triggering Driving line VK2, VK4, VK5, VK8 be high level control respectively triode VS2, VS4, VS5, VS8 conducting make P52, P54, P55, P58 effectively go to open bidirectional thyristor SR2, SR4, SR5, SR8, other diodes cut-off in triggering gating matrix is closed Disconnected bidirectional thyristor SR1, SR3, SR6, SR7, make TB2 carry out Contrary compensation；Input voltage is that voltage class 10, i.e. Y210 is effective When for high level, diode D01, D02, D03, D04 conducting in triggering gating matrix, triggering driving line VK2, VK3, VK5, VK8 controls triode VS2, VS3, VS5, VS8 conducting for high level respectively makes P52, P53, P55, P58 effectively go to open two-way crystalline substance Brake tube SR2, SR3, SR5, SR8, triggering gating matrix in other diodes cut-off, shutdown bidirectional thyristor SR1, SR4, SR6, SR7 makes TB1, TB2 while carrying out Contrary compensation.
Table 2
For another example input voltage is voltage class 6, i.e. Y26 when being effectively high level, the diode in triggering gating matrix D61, D62, D63, D64 conducting, triggering driving line VK1, VK4, VK5, VK7 be high level control respectively triode VS1, VS4, VS5, VS7 conducting make P51, P54, P55, P57 effectively go to open bidirectional thyristor SR1, SR4, SR5, SR7, triggering gating matrix In the cut-off of other diodes, turn off bidirectional thyristor SR2, SR3, SR6, SR8, TB1 made to carry out positive compensation；Input voltage is When voltage class 4, i.e. Y24 are effectively high level, diode D41, D42, D43, D44 in triggering gating matrix are connected, triggering Driving line VK1, VK4, VK6, VK7 be high level control respectively triode VS1, VS4, VS6, VS7 conducting make P51, P54, P56, P57 effectively go to open bidirectional thyristor SR1, SR4, SR6, SR7, other diodes cut-off in triggering gating matrix is closed Disconnected bidirectional thyristor SR2, SR3, SR5, SR8, make TB1, TB2 while carrying out positive compensation；Input voltage is voltage class 3, i.e. When Y23 is effectively high level, diode D31, D32, D33, D34 in triggering gating matrix are connected, triggering driving line VK1, VK3, VK5, VK8 control triode VS1, VS3, VS5, VS8 conducting for high level respectively goes out P51, P53, P55, P58 effectively Pass two-way thyristor SR1, SR3, SR5, SR8, triggering gate other diodes in matrix and end, shutdown bidirectional thyristor SR2, SR4, SR6, SR7 make TB3 carry out positive compensation；Input voltage is voltage class 1, i.e. Y21 when being effectively high level, triggering choosing Diode D11, D12, D13, D14 conducting in logical matrix, triggering driving line VK1, VK3, VK6, VK8 are that high level is controlled respectively Triode VS1, VS3, VS6, VS8 processed conducting make P51, P53, P56, P58 effectively go to open bidirectional thyristor SR1, SR3, SR6, SR8, triggering gate other diodes cut-off in matrix, turn off bidirectional thyristor SR2, SR4, SR5, SR7, keep TB2, TB3 same The compensation of Shi Jinhang forward direction；Etc..
When the triggering gating controlling value Y21-Y210 low level in table 2 is effective, it can equally trigger and gate according to Figure 14 The method of control unit embodiment 2, by 40 diode D01-D94, triggering gating control alignment Y21-Y210, triggering control row Line P51-P58 composition triggering gating matrix, directly exports the effective Trig control signal P51- of low level by triggering gating matrix P58.At this point, the low level in triggering gating controlling value Y21-Y210 needs to directly drive the input terminal of four altemating trigger optocouplers Lumination of light emitting diode；Whens altemating trigger optocoupler selects MOC3022, MOC3052 etc., the driving current of 40mA is needed；Exchange touching Whens the coupling that shines selects MOC3023, MOC3053 etc., the driving current of 20mA is needed.
Figure 16 is error detection judgement unit embodiment, gates controlling value P3, i.e. effective 10 triggerings of high level for triggering Gating controlling value Y21-Y210 is differentiated that the triggering of output gating controlling value differentiates that signal P7 high level is effective, low level without Effect；I.e. output P7 is 1, indicates that triggering gating controlling value is effective；Exporting P7 is 0, indicates that triggering gating controlling value is invalid.Figure 16 In, FD3 is the ROM memory with the input of 10 bit address and the output of 1 data, 10 controlling value Y21-Y210 points of triggering gatings It is not connected to 10 bit address input A0-A9, triggering gating controlling value differentiates that signal P7 is exported from data output end D0.Table 3 is inspection The memory cell content tables of data of ROM memory in the logic true value table and Figure 16 of wrong judgement unit.
Table 3
The function of error detection judgement unit be when having in the position M for judging triggering gating controlling value and when only one effective, Enable output triggering gating controlling value differentiate signal P7 it is effective, otherwise enable output triggering gate controlling value differentiate signal P7 without Effect；I.e. triggering gating controlling value the position M in only have one it is effective when, or do not have one it is effective when, enable the triggering of output It gates controlling value and differentiates that signal P7 is invalid.The content of ROM memory storage unit is written according to the data of table 3 in Figure 16, table 3 In, 10 triggering gating equal high level of controlling value Y21-Y210 are effective, and low level is invalid；The triggering gating controlling value of output differentiates Signal P7 high level is effective, and low level is invalid；Have in input signal Y 21-Y210 and when only 1 is 1, output P7 is 1；Y21- When Y210 is other inputs, output P7 is 0.
If 10 triggerings gating equal low level of controlling value Y21-Y210 of input is effective, high level is invalid, then will be in table 3 All 0 change 1,1 becomes 0 to the preceding 10 row address content of input.Triggering gating controlling value if necessary to output differentiates signal P7 Low level is effective, and high level is invalid, then by the content of 1 column data last in table 3, all 0 change 1,1 becomes 0.
When error detection judgement unit needs to be differentiated for other digits triggering gating controlling value P3, can equally it use ROM memory carries out.The triggering gating controlling value P3 that table 4 inputs has 7, and equal high level is effective, and low level is invalid；The touching of output Hair gating controlling value differentiates that signal P7 high level is effective, and low level is invalid.It is exported using having 7 bit address to input with 1 data ROM memory, 10 triggerings gating controlling value Y21-Y27 are respectively connected to 7 bit address input A0-A6, triggering gating control Value differentiates that signal P7 is exported from data output end D0；The content of ROM memory storage unit is written according to the content of table 4.
Table 4
The logic function of error detection judgement unit can also be realized in other ways, for example, table 3, table 4 are logic true value Table, can with or NOT logic door to combine realize the function.ROM memory in error detection judgement unit, or adopt When realizing function with logic gate, it is all made of single supply+VCC1 power supply.
Figure 17 is protection drive unit embodiment, if the triggering gating controlling value of input differentiates that signal P7 high level is effective, That is P7 is that 1 expression triggering gating controlling value is effective；P7 low level is invalid, i.e. P7 is that 0 expression triggering gating controlling value is invalid.If defeated The not trigger region control signal P4 low level entered is effective, i.e., when P4 is equal to 0, shows that AC supply voltage has fluctuation, make to touch Hair gating controlling value produces variation, needs to carry out the switching of bidirectional thyristor on off operating mode in thyristor bridge, changes compensation side Formula；In handoff procedure, when to avoid upper and lower bridge arm switching in thyristor bridge, because the factor that bidirectional thyristor is delayed to turn off is made At power supply short circuit, when not trigger region controls the signal valid period, i.e. the P4 of embodiment is equal to 0, own in cutoff thyristor bridge Bidirectional thyristor.
In Figure 17, triode VT, relay coil KA, freewheeling diode VD, resistance RK1 composition protection control circuit, three Pole pipe VK1, triode VK2, resistance RK2, resistance RK3 and door FY21 form trigger unit controlled source control circuit, with door FY21 is powered using single supply+VCC1.+ VCC2 is controlled source+VCCK in the power supply and trigger unit of relay coil Source current.When the triggering gating controlling value of input differentiates that signal P7 is low level, i.e., when triggering gating controlling value is invalid, with door FY21 exports low level, triode VK1, VK2 cut-off, and controlled source+VCCK power loss, trigger unit does not have power supply, not work Make, i.e., does not issue the trigger pulse of triggering bidirectional thyristor；P7 is that low level controls triode VT cut-off, relay coil simultaneously KA power loss disconnects relay normally open switch KA-1, KA-2, KA-3 in the compensation main circuit embodiment 1 of Fig. 2, or makes Relay normally open switch KA-1, KA-2, KA-3, KA-4 in the compensation main circuit embodiment 2 of Fig. 3 are disconnected, and are realized to thyristor The open-circuit-protection of bridge；Control is closed relay normally closed switch KA-5, KA-6 in the compensation main circuit embodiment 1 of Fig. 2, makes to apply The voltage being added on TB1, TB2 magnet exciting coil is 0, or control keeps the relay in the compensation main circuit embodiment 2 of Fig. 3 normal KA-5, KA-6, KA-7 closure are closed in make and break, make the voltage 0 being applied on TB1, TB2, TB3 magnet exciting coil.It is more single when sampling Member, which breaks down, causes triggering gating controlling value invalid, or the AC supply voltage of input is lower than minimum voltage levels section Range, when causing the triggering gating controlling value of output invalid, whether the not trigger region control signal P4 no matter inputted is effective, protection Driving unit all cuts off the power supply of trigger unit, stops the trigger pulse for issuing all bidirectional thyristors, while controlling disconnected All bridge arms of thyristor bridge are opened, realize the open-circuit-protection to thyristor bridge.When the triggering gating controlling value of input differentiates signal P7 is high level, i.e., when triggering gating controlling value is effective, control triode VT conducting, relay coil KA obtains electric, compensates Fig. 2 Relay normally open switch KA-1, KA-2, KA-3 closure in formula main circuit embodiment 1, relay normally closed switch KA-5, KA-6 are disconnected It opens, or is closed relay normally open switch KA-1, KA-2, KA-3, KA-4 in the compensation main circuit embodiment 2 of Fig. 3, after Electric appliance normally closed switch KA-5, KA-6, KA-7 are disconnected, and thyristor bridge is in compensation work state.When triggering, gating controlling value is effective, That is P7 is 1, and trigger region control signal is not effective, i.e. when P4 is equal to 0, exports low level with door FY21, triode VK1, VK2 are cut Only, controlled source+VCCK power loss, trigger unit do not work, i.e., do not issue the trigger pulse of triggering bidirectional thyristor, turn off brilliant lock All bidirectional thyristors in pipe bridge show that AC supply voltage has fluctuation at this time, and triggering gating controlling value is made to produce variation, It needs to carry out the switching of electronic switch, changes compensation way.When triggering gating controlling value is effective, i.e. P7 is 1, and not trigger region control When invalidating signal processed, i.e. P4 are equal to 1, high level is exported with door FY21, triode VK1, VK2 are both turned on, and controlled source+VCCK is obtained Electricity, trigger unit work normally, by triggering gating control cells according to effective, corresponding with some voltage class section triggering Gating controlling value selects corresponding Trig control signal effective, and trigger unit is made to issue trigger pulse, controls double in thyristor bridge To the on off operating mode of thyristor, main circuit is in compensation work state corresponding with the voltage class section.
When the triggering gating controlling value of error detection judgement unit judgement input is invalid, protection driving unit issues protection control letter Number to main circuit, when thyristor bridge being made to be in open-circuit-protection state, AC voltage regulator is not compensated input voltage, voltage-stablizer The voltage of output is the AC supply voltage inputted.When thyristor bridge is in open-circuit-protection state, if error detection differentiates list The triggering gating controlling value of member judgement input reverts to useful signal, then driving unit is protected to be automatically stopped the open circuit of thyristor bridge Guard mode, thyristor bridge are in compensation work state again.
From above embodiment and its course of work it is found that when input gates controlling value for effective triggering, triggering gating Control unit ensure that same full-bridge circuit upper and lower bridge arm bidirectional thyristor does not simultaneously turn on, that is, realize on same full-bridge circuit The mutual lock control of lower bridge arm bidirectional thyristor；And trigger gating controlling value it is invalid when, protection driving unit is single in rapid cutting triggering The power supply of member on the basis of avoiding the conducting of bidirectional thyristor mistake from causing short circuit, simultaneously switches off all bridges of thyristor bridge Arm makes thyristor bridge be in open-circuit-protection state.When thyristor bridge is in open-circuit-protection state, if error detection judgement unit is sentenced Disconnected AC voltage regulator reenters normal logic control state, i.e. the triggering of error detection judgement unit judgement input gates controlling value When reverting to useful signal, then protects driving unit that can be automatically stopped the open-circuit-protection state of thyristor bridge and locate it again In compensation work state.Above-mentioned function effectively strengthens the protection that AC voltage regulator is directed to course of work exception, makes institute The course of work for stating AC voltage-stabilizing control method is relatively reliable.
Except for the technical features described in the specification, the other technologies of AC voltage-stabilizing control method are those skilled in the art The routine techniques grasped.

Claims (10)

1. a kind of AC voltage-stabilizing control method, it is characterised in that: be divided into the voltage of AC supply voltage waving interval range more A voltage class section controls to compensate；The voltage class section of AC supply voltage is identified, triggering choosing is obtained Logical controlling value；The on-off assembled state of thyristor in triggering gating controlling value control thyristor bridge；By thyristor in thyristor bridge The multiple compensator transformers of on-off assembled state control selections in 01 or multiple compensator transformers come Voltage compensation is carried out, realizes voltage compensation state corresponding with voltage class section；Each voltage class of AC supply voltage Section corresponds to a voltage compensation state.
2. AC voltage-stabilizing control method according to claim 1, it is characterised in that: whether effective to triggering gating controlling value Differentiated, when triggering gating controlling value is invalid, control thyristor bridge is in open-circuit-protection state.
3. AC voltage-stabilizing control method according to claim 2, it is characterised in that: triggering gating controlling value be the position M two into Value processed；Differentiate whether triggering gating controlling value is effective according to being, in the position the M binary value of triggering gating controlling value, has and only Have one it is effective when, triggering gating controlling value it is effective；Otherwise, triggering gating controlling value is invalid；The M is whole more than or equal to 2 Number.
4. AC voltage-stabilizing control method according to any one of claim 1-3, it is characterised in that: to AC supply voltage Voltage class section identified, obtain triggering gating controlling value realized by sampling comparing unit；Sampling comparing unit includes Voltage comparator circuit between AC supply voltage sample circuit and multi-region, AC supply voltage sample circuit is by AC supply voltage RMS-DC converter is AC supply voltage sampled value；Voltage comparator circuit is to AC supply voltage sampled value and M-1 between multi-region A threshold voltage is compared, and obtains M triggering gating controlling values.
5. AC voltage-stabilizing control method according to claim 4, it is characterised in that: voltage comparator circuit includes between multi-region M-1 comparator, M-1 comparator are all made of original power supply power supply；M-1 different threshold voltages are respectively connected to M-1 The non-inverting input terminal of comparator, AC supply voltage sampled value are connected to the inverting input terminal of M-1 comparator simultaneously；M-1 In comparator, the minimum comparator of threshold voltage directlys adopt positive single supply and is powered, other comparators are all made of controllable electric Source is powered；When comparator is powered using controllable electric power, only all exported in all threshold voltages comparator lower than it When low level, controllable electric power is powered to its positive power source terminal, and otherwise controllable electric power stops being powered to its positive power source terminal；Than Compared with device using controllable electric power power supply and when controllable electric power stops being powered to its positive power source terminal, low level is exported；M triggering choosings Logical controlling value is made of the output valve and highest section judgment value of M-1 comparator；When the output valve of M-1 comparator is all When low level, highest section judgment value is high level, and otherwise, highest section judgment value is low level.
6. AC voltage-stabilizing control method according to any one of claim 1-3, it is characterised in that: triggering gating controlling value The method of the on-off assembled state of thyristor is in control thyristor bridge, by triggering gating control cells according to triggering gating control Value is selected by diode triggered gating matrix and keeps corresponding Trig control signal effective, controls thyristor in thyristor bridge On-off assembled state.
7. AC voltage-stabilizing control method according to claim 6, it is characterised in that: share 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；The triggering of M root Gating control alignment is corresponded with M triggering gating controlling values, and a triggering gating controlling value is corresponding to make a triggering gating It is effective to control alignment signal；N root triggering driving line and N number of thyristor correspond, and a triggering driving line signal is effective Correspondence keeps the Trig control signal of a thyristor effective；
When every triggering gating control alignment signal is effective, the on-off assembled state of thyristor in a corresponding thyristor bridge；? Corresponding on-off assembled state needs to control the touching of turn on thyristors when every triggering gating control alignment and effective alignment signal It is respectively provided with diode between hair driving line to be attached, when certain root triggering gating control alignment signal is effective, by diode Keep the triggering driving line signal for needing to control turn on thyristors effective.
8. AC voltage-stabilizing control method according to claim 7, it is characterised in that: change in triggering gating controlling value Become, need to switch when thyristor is in different on-off assembled states in thyristor bridge, its successive 2 kinds of on-off assembled state it Between, maintain not trigger region time, all thyristors in cutoff thyristor bridge.
9. AC voltage-stabilizing control method according to claim 8, it is characterised in that: described to maintain not trigger region time It is realized by not trigger region control signal；Trigger region control signal does not export one after triggering gating controlling value changes for control Pulse；Trigger region control signal is not effective during exporting pulse, invalid during non-output pulse；Not trigger region control When signal processed is effective, one not trigger region time is maintained.
10. AC voltage-stabilizing control method according to claim 9, it is characterised in that: control the triggering control of thyristor bridge Signal is generated by the triggering gating controlling value control postponed；The signal change moment of the triggering gating controlling value of delay is later than triggering Gating controlling value change after not trigger region control signal in pulse the forward position moment, and earlier than triggering gating controlling value hair It is raw change after not in trigger region control signal pulse it is rear along the moment.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2466696Y (en) * 2001-01-22 2001-12-19 孙龙宝 High-power AC compensation purifying valtage-regulated power supply
CN102163930A (en) * 2010-12-29 2011-08-24 川铁电气（天津）集团有限公司 Digital stabilized power supply control circuit based on SPLD (simple programmable logic device)
CN105429475A (en) * 2015-09-21 2016-03-23 国网冀北电力有限公司技能培训中心 Combined single-phase/three-phase alternating current voltage stabilizer based on digital circuit control
EP3182141A1 (en) * 2015-12-10 2017-06-21 ABB Schweiz AG Compensation signal circuit for compensating magnetisation errors in current transformers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2466696Y (en) * 2001-01-22 2001-12-19 孙龙宝 High-power AC compensation purifying valtage-regulated power supply
CN102163930A (en) * 2010-12-29 2011-08-24 川铁电气（天津）集团有限公司 Digital stabilized power supply control circuit based on SPLD (simple programmable logic device)
CN105429475A (en) * 2015-09-21 2016-03-23 国网冀北电力有限公司技能培训中心 Combined single-phase/three-phase alternating current voltage stabilizer based on digital circuit control
EP3182141A1 (en) * 2015-12-10 2017-06-21 ABB Schweiz AG Compensation signal circuit for compensating magnetisation errors in current transformers

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