CN1309159C - AC voltage-stabilizing, voltage and speed regulating device - Google Patents

AC voltage-stabilizing, voltage and speed regulating device Download PDF

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CN1309159C
CN1309159C CNB031334695A CN03133469A CN1309159C CN 1309159 C CN1309159 C CN 1309159C CN B031334695 A CNB031334695 A CN B031334695A CN 03133469 A CN03133469 A CN 03133469A CN 1309159 C CN1309159 C CN 1309159C
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reactance
diode
shift circuit
unsteady flow
flow phase
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CN1567709A (en
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郑坤来
郑宏
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Abstract

The present invention relates to an alternating current voltage stabilizing and regulating and speed regulating device. The present invention is characterized in that the lead-out terminals of load impedors are respectively connected to a power supply, and the other terminals of the load impedors are respectively connected in series with the input terminals of reactance current changing phase shift circuits; the output terminals of the reactance current changing phase shift circuits are respectively connected to the input terminals of choppers; the absorption loop of each chopper is connected to the DLC terminal of one corresponding reactance current changing phase shift circuit; terminals D01, D02 and Lo are connection points of zero lines; the bF terminal of output pulse of a control system is connected to the bF' of the choppers, and feedback signals VF, IF1 and IF2 are connected to the input terminals VF', IF1' and IF2' of the control system; a given voltage-regulating and stabilizing signal EF' is connected with the input terminal EF of the control system. The present invention has the advantages of large power factor, small harmonic current, wide regulating range, obvious power saving, simple structure, low cost and reliable use and has the characteristics of convenient maintenance, etc. The present invention is widely applicable to the speed regulating soft start of single-phase and three-phase asynchronous machines and sine wave voltage-regulating and stabilizing constant current appliances.

Description

The AC voltage-stabilizing pressure-speed regulating device
Technical field
The present invention relates to a kind of simple alternating current and carry out a kind of device of copped wave, voltage regulation of voltage regulation, electric machine speed regulation, especially a kind of asynchronous machine voltage regulation of voltage regulation speed regulating device.
Background technology
Methods such as the current silicon-controlled voltage regulation that is used for AC voltage-regulating device, saturable reactor voltage-regulation voltage-stabilization, magnetic saturation reactor voltage stabilizing, electron tube voltage stabilizing, automatic coupling voltage regulator pressure regulation, they are the shortcoming of various degrees all, very become as voltage, current waveform, various problems such as power factor is low, and harmonic current is big, volume is big, loss is big; There is difficult maintenance in the frequency control used of alternating current motor for another example, and the cost height is fragile, problem such as is difficult to apply.
Summary of the invention
The technical problem that the present invention is directed to above-mentioned existence provides a kind of asynchronous machine pressure-speed regulating device, it can be by the variation of reactance in sinusoidal chopping method regulation voltage current phase and the circuit, thereby the voltage that makes the two ends that are added in load is sinusoidal voltage of voltage regulation, electric current by load is a sinusoidal current, adopt the loop control system, can carry out soft start to asynchronous motor, and carry out stepless speed regulation, constant-speed operation.
The present invention is achieved in that the asynchronous machine pressure-speed regulating device, comprise power supply, the threephase load impedance, control system, chopper and reactance unsteady flow phase-shift circuit, it is characterized in that threephase load impedance A, B, one end of the exit of C is received three phase mains A respectively, B, the C end, the other end a of threephase load impedance exit, b, the series connection of c difference is at the input a ' of reactance unsteady flow phase-shift circuit, b ', c ', the three-phase output end aL of reactance unsteady flow phase-shift circuit, bL, cL receives the input aL ' of chopper respectively, bL ', cL ', the deboost climbing of chopper and the absorption circuit DLC ' of current-rising-rate receive the DLC end of reactance unsteady flow phase-shift circuit, the D of reactance unsteady flow phase-shift circuit (2) 01, control system (4) D 02,, the Lo of chopper (3) end is the zero line interface, the output pulse bF of control system terminates to the bF ' of chopper, the voltage feedback signal VF of reactance unsteady flow phase-shift circuit links to each other with the input VF ' of control system, the current feedback signal IF of chopper 1Input IF with control system 1' link to each other source current feedback signal IF 2Input IF with control system 2' link to each other, the given signal EF ' of voltage-regulation voltage-stabilization is connected with the input EF of control system.
The AC voltage-stabilizing pressure-speed regulating device, comprise power supply, load impedance, control system, chopper and reactance unsteady flow phase-shift circuit, load impedance is single-phase, and an end of the exit of load impedance is connected with power supply A end, and the other end is connected with the input a ' of reactance unsteady flow phase-shift circuit; Capacitor C in the reactance unsteady flow phase-shift circuit 1, C 2, C 3, C 4Respectively with diode D 1, D 2, D 3, D 4Parallel connection, diode D 3, D 6Negative electrode and diode D 1The a ' end of anode and reactance unsteady flow phase-shift circuit be connected diode D 1Negative electrode and inductance coil L 1One end connects, inductance coil L 1The other end be connected on the aL end of reactance unsteady flow phase-shift circuit, diode D 4, D 7Negative electrode and diode D 2The b ' end of anode and reactance unsteady flow phase-shift circuit is connected, the b ' end of reactance unsteady flow phase-shift circuit is held with the B of power supply and is connected diode D 2Negative electrode and inductance coil L 2One end connects, inductance coil L 2The other end be connected on the bL end of reactance unsteady flow phase-shift circuit, inductance coil L 3With diode D 5Series connection, diode D 5Negative electrode, diode D 6, D 7The DLC end of anode and reactance unsteady flow phase-shift circuit be connected inductance coil L 3The other end, diode D 3, D 4Anode and the D of reactance unsteady flow phase-shift circuit 01Connect aL, bL, DLC, the D of reactance unsteady flow phase-shift circuit 01End is connected with aL ', bL ', DLC ', the Lo end of chopper respectively, the DLC ' end and the capacitor C of chopper 5Connect the aL ' of chopper, bL ' end and capacitor C 5The other end be connected with the collector electrode of the copped wave pipe K of chopper, the Lo of chopper end is connected with the emitter of copped wave pipe K, the base stage of copped wave pipe K is connected with control system.
Advantage of the present invention is: the power factor height, harmonic current is little, adjusting range is big, economize on electricity is remarkable, simple in structure, cost is low, use is reliable, characteristics such as easy to maintenance, can be widely used in single-phase, threephase asynchronous machine speed governing soft start, and sinusoidal wave voltage-regulation voltage-stabilization constant current equipment.
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Description of drawings
Fig. 1 is a circuit block diagram of the present invention.
Fig. 2 is an instance graph of the present invention.
Fig. 3 is the circuit diagram of the single-phase asynchronous motor pressure-speed regulating device of the embodiment of the invention 1.
Fig. 4 is the circuit diagram of the threephase asynchronous machine pressure-speed regulating device of the embodiment of the invention 2.
Fig. 5 is the embodiment of the invention 3 circuit diagrams.
Fig. 6 is the asynchronous coiling electric motor rotor stator of the three phase squirrel cage of the embodiment of the invention 4 pressure-regulating and speed-regulating circuit figure simultaneously.
Fig. 7 carries out variable voltage control asynchronous machine circuit diagram for the embodiment of the invention 5 three pole reactor coils on three iron cores.
Load impedance 1, reactance unsteady flow phase-shift circuit 2, chopper 3, control system 4, power supply indicator 5, switch 6, adjusting velocity by voltage turn-knob 7, power-line terminal 8, ammeter 9, fin 10, screw hole 11, two tunnel reactance unsteady flow phase-shift circuits 2 ', No. two choppers 3 ' among the figure.
Embodiment
Fig. 1 is a circuit block diagram of the present invention.As shown in Figure 1, the A of threephase load impedance 1, B, C exit are received three phase mains A, B, C end respectively, the series connection of other end a, the b of threephase load impedance 1, c difference is at input a ', b ', the c ' of reactance unsteady flow phase-shift circuit 2, three-phase output end aL, the bL of reactance unsteady flow phase-shift circuit 2, cL receive input aL ', bL ', the cL ' of chopper 3 respectively, the deboost climbing of chopper 3 and the absorption circuit DLC ' of current-rising-rate receive the DLC end of reactance unsteady flow phase-shift circuit 2, D 01, D 02, Lo end is the zero line interface, the output pulse bF of control system 4 terminates to the bF ' of chopper 3, the voltage feedback signal VF that reactance exchanges phase-shift circuit links to each other the current feedback signal IF of chopper with the input VF ' of control system 1Input IF with control system 1' link to each other source current feedback signal IF 2Input IF with control system 2' link to each other, the given signal EF ' of voltage-regulation voltage-stabilization is connected with the input EF of control system 4.
2 pairs of load impedances of reactance unsteady flow phase-shift circuit 1 effect is 1: change the reactance size, size of current that can control load impedance 1 changes the voltage swing of load impedance 1 or keeps stable, carries out voltage-regulation voltage-stabilization; 2: the unsteady flow effect, utilize the unilateal conduction characteristic of the diode in the reactance unsteady flow phase-shift circuit 2, conversion is added in the positive-negative polarity of the both end voltage of load impedance 1, plays the unsteady flow effect thereby change the sense of current; 3: the phase shift effect, utilize electric capacity in the reactance unsteady flow phase-shift circuit 2 under high frequency situations, the characteristic that discharges and recharges is carried out filtering, is sinusoidal voltage and sinusoidal current thereby make the electric current and voltage by load impedance 1, and each phase Phase advance.The pulse control of chopper 3 controlled systems 4 is carried out copped wave to each the cross streams voltage and the positive-negative half-cycle waveform of coming in via 2 inputs of reactance unsteady flow phase-shift circuit.Various feedback signals that control system 4 is come in according to input and given EF ' signal carry out comprehensive computing by Logical processing unit, and control impuls changes when regulating with electric current and voltage by operation result, and then the copped wave operating state of change chopper 3.
Fig. 2 is an instance graph of the present invention.
Be provided with power supply indicator 5, switch 6, adjusting velocity by voltage turn-knob 7, power-line terminal 8, ammeter 9 in the front portion of casing, be provided with fin 10, fixed screw holes 11 at the rear portion of casing.
Embodiment 1:
It among Fig. 3 single-phase asynchronous motor pressure-speed regulating device speed control principle circuit diagram.
An end of load impedance 1 is connected with the A end of power supply among the figure, and the other end of load impedance 1 is connected capacitor C in reactance unsteady flow phase-shift circuit 2 with a ' end of reactance unsteady flow phase-shift circuit 2 1, C 2, C 3, C 4Respectively with diode D 1, D 2, D 3, D 4Parallel connection, diode D 3, D 6Negative electrode and diode D 1The a ' end of anode and reactance unsteady flow phase-shift circuit 2 be connected diode D 1Negative electrode and inductance coil L 1One end connects, inductance coil L 1The other end be connected on the aL end of reactance unsteady flow phase-shift circuit 2, diode D 4, D 7Negative electrode and diode D 2The b ' end of anode and reactance unsteady flow phase-shift circuit 2 is connected, the b ' end of reactance unsteady flow phase-shift circuit 2 is held with the B of power supply and is connected diode D 2Negative electrode and inductance coil L 2One end connects, inductance coil L 2The other end be connected on the bL end of reactance unsteady flow phase-shift circuit 2, inductance coil L 3With diode D 5Series connection, diode D 5Negative electrode, diode D 6, D 7The DLC end of anode and reactance unsteady flow phase-shift circuit 2 be connected inductance coil L 3The other end, diode D 3, D 4Anode and the D of reactance unsteady flow phase-shift circuit 2 01Zero point, tie point connected, aL, bL, DLC, the D of reactance unsteady flow phase-shift circuit 2 01End is connected with aL ', bL ', DLC ', the Lo end of chopper 3 respectively, the DLC ' end and the capacitor C of chopper 3 5Connect the aL ' of chopper 3, bL ' end and capacitor C 5The other end be connected with the collector electrode of the copped wave pipe K of chopper 3, the Lo of chopper 3 end is connected with the emitter of copped wave pipe K, the base stage of copped wave pipe K is connected with control system.
Its course of work is: work as R LWhen load needed 220V voltage, copped wave pipe K was conducting state all the time, if this moment power supply A for just, B when bearing, I 1Electric current from power supply A through R L→ D 1→ L 1→ K Ce→ D 4Get back to power supply B and constitute the loop.Because the internal resistance of diode and copped wave pipe K is very little, so the alternation voltage drop more than 98% is at R LIn the load.With should B for just, A is when bearing, the voltage more than 98% also falls at R LIn the load, and polarity of voltage is opposite with upper half, has finished load to add alternating current 220V total head requirements of one's work, if load need reduce voltage, only needs given voltage is reduced; Control system produces corresponding pulse duration as required, conducting or the shutoff of control copped wave pipe K.
When A for just, B is for negative, when K opens, electric current I 1With I noted earlier 1Identical, at inductance coil L 1In produce induced voltage, get the coil head end ready for just, tail end is for negative, thereby stops electric current to increase, the while capacitor C 2Through L 2Discharge, capacitor C 5Through K Ce→ L 3→ D 5Discharge converts electric energy to magnetic energy and is stored in the magnetic field; When K turn-offs, coil L 1Produce a back-emf again, tail end is being for just, and head end is for negative, this moment electric current I 1Through load R L→ L 1→ C 5→ D 7Finish the loop, L 2Also produce a back-emf, tail end is for just, and electric current is from tail end C 5→ D 7→ C 2Finish the loop.L 3Producing induced current is through D 5→ D 7→ C 4Get back to L 3Head end.Whole K blocking interval, R LElectric current is arranged, and magnetic field reduces simultaneously, and magnetic energy is converted into electric energy, is stored in the electric capacity.When K conducting or shutoff once more, begin the above-mentioned course of work again, thereby finish the copped wave amplitude modulation pressure regulation of A when positive half cycle.
When A for negative, B for just, when K opens or turn-offs, as a same reason, finished the amplitude modulation pressure regulation of negative half period.
By preceding as can be seen described, what switching transistor K was frequent opening and turn-offing, and the positive-negative half-cycle alternating current is carried out copped wave.Through the reactance change of inductance coil, electric capacity and electric current phase shift, filtering, make the load resistance two ends obtain the AC sinusoidal voltage that to regulate and AC sine electric current.Because pressure regulation is the reactance pressure regulation that utilizes electromagnetic energy to transform, so the pressure regulation loss is little, the efficient height.Because the effect of rectifier diode shunt capacitance significantly reduces the non-linear current of the diode of flowing through, reduced high order harmonic component, thereby improved power factor again.
Embodiment 2:
Fig. 4 is a threephase asynchronous machine pressure-speed regulating device speed control principle circuit diagram.
Load impedance 1 in embodiment 1 can be threephase asynchronous machine, three lead-out wires of threephase asynchronous machine are connected with power supply A, B, C respectively, three lead-out wires of the other end are connected with a ', b ', the c ' end of reactance unsteady flow phase-shift circuit 2 respectively, identical among connecting circuit between a ', b ' and aL, the bL and the embodiment 1, the C phase loop of increase annexation in reactance unsteady flow phase-shift circuit 2 is a capacitor C 10, C 9Respectively with diode D 10, D 9Parallel connection, diode D 10, D 8Negative electrode and diode D 9Anode and reactance unsteady flow phase-shift circuit c ' end be connected diode D 9Negative electrode and inductance coil L 4Connect inductance coil L 4The cL end of the other end and reactance unsteady flow phase-shift circuit 2 be connected diode D 10Anode and the D of reactance unsteady flow phase-shift circuit 2 01End tie point at zero point connects diode D 8The DLC end of negative electrode and reactance unsteady flow phase-shift circuit 2 is connected, the cL end of reactance unsteady flow phase-shift circuit 2 is held with the cL ' of chopper 3 and is connected, cL ' holds and is connected with the collector electrode of copped wave pipe K.The capacitor C of A phase loop in reactance unsteady flow phase-shift circuit 2 3, C 1Respectively with diode D 3, D 1Parallel connection, diode D 3, D 6Negative electrode and diode D 3The a ' end of anode and reactance unsteady flow phase-shift circuit 2 be connected diode D 1Negative electrode and inductance coil L 1Connect inductance coil L 1The aL end of the other end and reactance unsteady flow phase-shift circuit 2 be connected diode D 3Anode and the D of reactance unsteady flow phase-shift circuit 2 01End connects, diode D 6The DLC end of anode and reactance unsteady flow phase-shift circuit 2 is connected, the aL end of reactance unsteady flow phase-shift circuit 2 is held with the aL ' of chopper 3 and is connected, aL ' holds and is connected with the collector electrode of copped wave pipe K; The capacitor C of B phase loop in reactance unsteady flow phase-shift circuit 2 4, C 2Respectively with diode D 4, D 2Parallel connection, diode D 4, D 7Negative electrode and diode D 2The b ' end of anode and reactance unsteady flow phase-shift circuit 2 be connected diode D 2Negative electrode and inductance coil L 2Connect inductance coil L 2The bL end of the other end and reactance unsteady flow phase-shift circuit 2 be connected diode D 4Anode and the D of reactance unsteady flow phase-shift circuit 2 01End connects, diode D 7The DLC end of anode and reactance unsteady flow phase-shift circuit 2 is connected, the bL end of reactance unsteady flow phase-shift circuit 2 is held with the bL ' of chopper 3 and is connected, bL ' holds and is connected with the collector electrode of copped wave pipe K.
Embodiment 3:
Fig. 5 is the circuit diagram that can increase the threephase asynchronous machine of voltage adjusting range.Diode D among the figure 6, D 7, D 8Two ends shunt capacitance C 6, C 7, C 8, diode D 5Negative electrode and diode D 11Anode connect diode D 11Negative electrode and diode D 6, D 7, D 8Anode between be connected in series diode D 6, D 7, D 8Negative electrode be connected on diode D 1, D 2, D 9Negative electrode and inductance coil L 1, L 2, L 4Between, inductance coil L 3DLC with phase-shift circuit 2 2End connects, the other end and diode D 5Anode connect diode D 5The DLC end of negative electrode and phase-shift circuit 2 be connected diode D 12Negative electrode and diode D 6, D 7, D 8Anode connect diode D 12Anode and the DLC of phase-shift circuit 2 3End connects, the aL ' of chopper 3, bL ', cL ' end and inductance coil L 5One end connects, inductance coil L 5The other end is connected with the collector electrode of copped wave pipe K, the DLC of phase-shift circuit 2, DLC 2, DLC 3, D 01End and pulse chopper 3 corresponding DLC ', DLC 2', DLC 3', Lo holds connection, inductance coil L 6An end and Lo end be connected inductance coil L 6The other end and diode D 13Anode connect diode D 13Negative electrode and capacitor C 13Series connection on the collector electrode of copped wave pipe K, inductance coil L 6With diode D 13Between line and DLC 2' the end connection, diode D 13And capacitor C 13Between line and DLC 3' the end connection, DLC ' end and capacitor C 5Series connection is on the collector electrode of copped wave pipe K.Other is with embodiment 2.
Embodiment 4:
Fig. 6 is the asynchronous coiling electric motor rotor stator of three phase squirrel cage pressure-regulating and speed-regulating circuit figure simultaneously.
It among Fig. 6 the circuit diagram of two-way variable voltage control, the stator exit of motor is connected with power supply, the other end of stator exit is connected with the first reactance unsteady flow phase-shift circuit 2, the first reactance unsteady flow phase-shift circuit 2 is connected with first chopper 3, the tail end of the rotor of three phase squirrel cage asynchronous machine is connected together, be connected into star, the rotor head end is connected with the second reactance unsteady flow phase-shift circuit 2 ', the second reactance unsteady flow phase-shift circuit 2 ' is connected with second chopper 3 ', the base stage of the copped wave pipe of first chopper is connected with the base stage of second chopper 3 ', is connected with control system 4 again.Other is with embodiment 3.
Embodiment 5:
Fig. 7 is that the three pole reactor coil carries out variable voltage control asynchronous machine circuit diagram on three iron cores.
Diode D among the figure 6, D 7, D 8Two ends shunt capacitance C 6, C 7, C 8, inductance coil L 1With L 7, L 2With L 8, L 4With L 9Between be wound with iron core, inductance coil L 7, L 8With L 9An end respectively with diode D 14, D 15, D 16Anode connect diode D 14, D 15, D 16Negative electrode and DLC, the DLC of reactance unsteady flow phase-shift circuit 2 2, DLC 3End connects, diode D 19, D 18, D 17Anode and DLC, DLC 2, DLC 3Connect diode D 19, D 18, D 17Negative electrode and diode D 6, D 7, D 8Anode connect inductance coil L 7, L 8With L 9The other end and the D of reactance unsteady flow phase-shift circuit 2 01End connects, aL, bL, cL, DLC, the DLC of reactance unsteady flow phase-shift circuit 2 2, DLC 3, D 01End and chopper 3 corresponding aL ', bL ', cL ', DLC ', DLC 2', DLC 3', Lo holds connection, DLC ', DLC 2', DLC 3' end serial connection capacitor C 14, C 15, C 16And aL ', bL ', cL ' end is connected to the collector electrode of copped wave pipe K, and emitter is held with Lo and is connected, and other is with embodiment 3.
Above-mentioned copped wave pipe can be transistor, field effect transistor, IGBT pipe, thyristor etc.
The operation principle of embodiment 2, embodiment 3, embodiment 4, embodiment 5 is identical with embodiment 1.
Above-mentioned load impedance can be asynchronous machine or transformer.
Electric capacity, inductance coil, diode in the above-mentioned reactance unsteady flow phase-shift circuit 2 can be arranged in the chopper 3, and electric capacity, inductance coil, diode in the chopper 3 can be arranged in the reactance unsteady flow phase-shift circuit 2.According to range of regulation, the difference of performance requirement, can increase and decrease adjustment in force influences the current circuit of the inductance coil of pressure regulation, diode, electric capacity.
Iron core in the foregoing description 5 can be one.

Claims (6)

1, the AC voltage-stabilizing pressure-speed regulating device, comprise power supply, the threephase load impedance, control system, chopper and reactance unsteady flow phase-shift circuit, it is characterized in that threephase load impedance A, B, one end of the exit of C is received three phase mains A respectively, B, the C end, the other end a of threephase load impedance exit, b, the series connection of c difference is at the input a ' of reactance unsteady flow phase-shift circuit (2), b ', c ', the three-phase output end aL of reactance unsteady flow phase-shift circuit (2), bL, cL receives the input aL ' of chopper (3) respectively, bL ', cL ', the deboost climbing of chopper (3) and the absorption circuit DLC ' of current-rising-rate receive the DLC end of reactance unsteady flow phase-shift circuit (2), the D of reactance unsteady flow phase-shift circuit (2) 01, control system (4) D 02, chopper (3) Lo end be the zero line interface, the output pulse bF of control system (4) terminates to the bF ' of chopper, the voltage feedback signal VF of reactance unsteady flow phase-shift circuit links to each other with the input VF ' of control system, the current feedback signal IF of chopper 1Input IF with control system 1' link to each other source current feedback signal IF 2Input IF with control system 2' link to each other, the given signal EF ' of voltage-regulation voltage-stabilization is connected with the input EF of control system (4).
2, AC voltage-stabilizing pressure-speed regulating device according to claim 1 is characterized in that C phase loop increases capacitor C in reactance unsteady flow phase-shift circuit (2) 10, C 9Respectively with diode D 10, D 9Parallel connection, diode D 10, D 8Negative electrode and diode D 9The c ' end of anode and reactance unsteady flow phase-shift circuit (2) be connected diode D 9Negative electrode and inductance coil L 4An end connect inductance coil L 4The cL end of the other end and reactance unsteady flow phase-shift circuit (2) be connected diode D 10Anode and the D of reactance unsteady flow phase-shift circuit (2) 01End connects, diode D 8The DLC end of anode and reactance unsteady flow phase-shift circuit (2) is connected, the cL end of reactance unsteady flow phase-shift circuit (2) is held with the cL ' of chopper (3) and is connected, cL ' holds and is connected with the collector electrode of copped wave pipe K; The capacitor C of A phase loop in reactance unsteady flow phase-shift circuit (2) 3, C 1Respectively with diode D 3, D 1Parallel connection, diode D 3, D 6Negative electrode and diode D 3The a ' end of anode and reactance unsteady flow phase-shift circuit (2) be connected diode D 1Negative electrode and inductance coil L 1An end connect inductance coil L 1The aL end of the other end and reactance unsteady flow phase-shift circuit (2) be connected diode D 3Anode and the D of reactance unsteady flow phase-shift circuit (2) 01End connects, diode D 6The DLC end of anode and reactance unsteady flow phase-shift circuit (2) is connected, the aL end of reactance unsteady flow phase-shift circuit (2) is held with the aL ' of chopper (3) and is connected, aL ' holds and is connected with the collector electrode of copped wave pipe K; The capacitor C of B phase loop in reactance unsteady flow phase-shift circuit (2) 4, C 2Respectively with diode D 4, D 2Parallel connection, diode D 4, D 7Negative electrode and diode D 2The b ' end of anode and reactance unsteady flow phase-shift circuit (2) be connected diode D 2Negative electrode and inductance coil L 2An end connect inductance coil L 2The bL end of the other end and reactance unsteady flow phase-shift circuit (2) be connected diode D 4Anode and the D of reactance unsteady flow phase-shift circuit (2) 01End connects, diode D 7The DLC end of anode and reactance unsteady flow phase-shift circuit (2) is connected, the bL end of reactance unsteady flow phase-shift circuit (2) is held with the bL ' of chopper (3) and is connected, bL ' holds and is connected with the collector electrode of copped wave pipe K.
3, AC voltage-stabilizing pressure-speed regulating device according to claim 2 is characterized in that diode D in reactance unsteady flow phase-shift circuit (2) 6, D 7, D 8Two ends shunt capacitance C 6, C 7, C 8, diode D 5Negative electrode and diode D 11Anode connect diode D 11Negative electrode and diode D 6, D 7, D 8Anode between be connected in series diode D 6, D 7, D 8Negative electrode be connected on diode D 1, D 2, D 9Negative electrode and inductance coil L 1, L 2, L 1Between, inductance coil L 3DLC with reactance unsteady flow phase-shift circuit (2) 2End connects, the other end and diode D 5Anode connect diode D 5The DLC end of negative electrode and reactance unsteady flow phase-shift circuit (2) be connected diode D 12Negative electrode and diode D 6, D 7, D 8Anode connect diode D 12Anode and the DLC of reactance unsteady flow phase-shift circuit (2) 3End connects, aL ', the bL ' of chopper (3), cL ' end and inductance coil L 5One end connects, inductance coil L 5The other end is connected with the collector electrode of copped wave pipe K, DLC, the DLC of reactance unsteady flow phase-shift circuit (2) 2, DLC 3, D 01End and the corresponding DLC ' of chopper (3), DLC 2', DLC 3', Lo holds connection, inductance coil L 6An end and Lo end be connected inductance coil L 6The other end and diode D 13Anode connect diode D 13Negative electrode and capacitor C 13Series connection on the collector electrode of copped wave pipe K, inductance coil L 6With diode D 13Between line and DLC 2' the end connection, diode D 13And capacitor C 13Between line and DLC 3' the end connection, DLC ' end and capacitor C 5Series connection is on the collector electrode of copped wave pipe K.
4, AC voltage-stabilizing pressure-speed regulating device according to claim 3, it is characterized in that the threephase load impedance is the stator of three phase squirrel cage asynchronous machine, one end of the stator exit of motor is connected with power supply, the other end of stator exit is connected with reactance unsteady flow phase-shift circuit (2), reactance unsteady flow phase-shift circuit (2) is connected with chopper (3), the tail end of the rotor of three phase squirrel cage asynchronous machine is connected together, be connected into star, the rotor head end is connected with two tunnel reactance unsteady flow phase-shift circuits (2 '), two tunnel reactance unsteady flow phase-shift circuits (2 ') are connected with No. two choppers (3 '), the base stage of the copped wave pipe of chopper is connected with the base stage of the copped wave pipe of No. two choppers (3 '), is connected with control system (4) again.
5, AC voltage-stabilizing pressure-speed regulating device according to claim 2 is characterized in that the copped wave pipe is any one in transistor, field effect transistor, insulated gate bipolar transistor and the thyristor.
6, AC voltage-stabilizing pressure-speed regulating device, comprise power supply, load impedance, control system, chopper and reactance unsteady flow phase-shift circuit, it is characterized in that load impedance (1) is for single-phase, one end of the exit of load impedance (1) is connected with power supply A end, and the other end is connected with the input a ' of reactance unsteady flow phase-shift circuit (2); The interior capacitor C of reactance unsteady flow phase-shift circuit (2) 1, C 2, C 3, C 4Respectively with diode D 1, D 2, D 3, D 4Parallel connection, diode D 3, D 6Negative electrode and diode D 1The a ' end of anode and reactance unsteady flow phase-shift circuit (2) be connected diode D 1Negative electrode and inductance coil L 1One end connects, inductance coil L 1The other end be connected on the aL end of reactance unsteady flow phase-shift circuit (2), diode D 4, D 7Negative electrode and diode D 2The b ' end of anode and reactance unsteady flow phase-shift circuit (2) is connected, the b ' end of reactance unsteady flow phase-shift circuit (2) is held with the B of power supply and is connected diode D 2Negative electrode and inductance coil L 2One end connects, inductance coil L 2The other end be connected on the bL end of reactance unsteady flow phase-shift circuit (2), inductance coil L 3With diode D 5Series connection, diode D 5Negative electrode, diode D 5, D 7The DLC end of anode and reactance unsteady flow phase-shift circuit (2) be connected inductance coil L 3The other end, diode D 3, D 1Anode and the D of reactance unsteady flow phase-shift circuit (2) 01Connect aL, bL, DLC, the D of reactance unsteady flow phase-shift circuit (2) 01End is connected with aL ', bL ', DLC ', the Lo end of chopper (3) respectively, the DLC ' end and the capacitor C of chopper (3) 5Connect aL ', the bL ' end and the capacitor C of chopper (3) 5The other end be connected with the collector electrode of the copped wave pipe K of chopper (3), the Lo of chopper (3) end is connected with the emitter of copped wave pipe K, the base stage of copped wave pipe K is connected with control system.
CNB031334695A 2003-06-19 2003-06-19 AC voltage-stabilizing, voltage and speed regulating device Expired - Fee Related CN1309159C (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4954764A (en) * 1987-12-30 1990-09-04 Samsung Electronic Co., Ltd. Circuit and method for power efficiency improvement of induction motors
CN1079082A (en) * 1992-05-01 1993-12-01 龚秋声 Chopper-type controlled rectification and AC voltage adjusting circuit
US6437535B1 (en) * 2000-09-25 2002-08-20 General Electric Company Starting system and method for a microturbine power generation unit
CN2627732Y (en) * 2003-06-19 2004-07-21 郑坤来 AC voltage-stabilization, voltage and speed regulating device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4954764A (en) * 1987-12-30 1990-09-04 Samsung Electronic Co., Ltd. Circuit and method for power efficiency improvement of induction motors
CN1079082A (en) * 1992-05-01 1993-12-01 龚秋声 Chopper-type controlled rectification and AC voltage adjusting circuit
US6437535B1 (en) * 2000-09-25 2002-08-20 General Electric Company Starting system and method for a microturbine power generation unit
CN2627732Y (en) * 2003-06-19 2004-07-21 郑坤来 AC voltage-stabilization, voltage and speed regulating device

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