CN204835962U - Voltage doubler rectifier circuit - Google Patents

Voltage doubler rectifier circuit Download PDF

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Publication number
CN204835962U
CN204835962U CN201520466453.3U CN201520466453U CN204835962U CN 204835962 U CN204835962 U CN 204835962U CN 201520466453 U CN201520466453 U CN 201520466453U CN 204835962 U CN204835962 U CN 204835962U
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China
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diode
electric capacity
phase
connect
inductance
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锁军
陈增禄
王建波
邵文权
夏冠亚
彭书涛
王宁
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State Grid Corp of China SGCC
Xian Polytechnic University
Electric Power Research Institute of State Grid Shaanxi Electric Power Co Ltd
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State Grid Corp of China SGCC
Xian Polytechnic University
Electric Power Research Institute of State Grid Shaanxi Electric Power Co Ltd
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Abstract

The utility model discloses a simple voltage doubler rectifier circuit, including filter inductor, boost circuit, rectifier circuit and filter circuit, the circuit topology only comprises diode and electric capacity, does not need step up transformer. Be applicable to powerful application scenario, the circuit is simple, small, the cost low. This voltage doubler rectifier circuit can realize when three phase current that the rectified output DC voltage reaches 2 times of the line voltage peak value, realize when single phase power perhaps that the rectified output DC voltage reaches 2 times or 4 times of the phase voltage peak value.

Description

A kind of voltage doubling rectifing circuit
[technical field]
The utility model belongs to AC-DC rectification circuit technical field, particularly a kind of voltage doubling rectifing circuit.
[background technology]
The available direct voltage of three-phase bridge diode rectifier circuit is the peak value of three-phase line voltage; The available direct voltage of single-phase bridge diode rectifier circuit is the peak value of single-phase voltage; The available direct voltage of single-phased two-half-wave diode rectifier circuit is 2 times of single-phase voltage peak value.When needing higher rectification output dc voltage, generally need to use step-up transformer, such that the volume of rectifier power source increases, cost rising; Boost rectifying circuit load capacity when progression increases of diode and electric capacity cascade reduces, and is suitable only for low power occasion.Under the occasion of a lot of engineer applied, need to use jumbo high-voltage dc voltage.
[utility model content]
The purpose of this utility model is to provide a kind of voltage doubling rectifing circuit, and its topology is made up of diode and electric capacity completely, does not need step-up transformer, 2 times that can realize when three phase mains that rectification output dc voltage reaches line voltage peak; Or 2 times or 4 times that realize when single phase poaer supply that rectification output dc voltage reaches phase voltage peak value.
To achieve these goals, the utility model adopts following technical scheme:
A kind of voltage doubling rectifing circuit, comprises filter inductance, booster circuit, rectification circuit and filter circuit;
Described filter inductance comprises inductance L 1, L 2, L 3, each phase inductance is connected between a pair electric capacity mid point in A, B, C phase of input ac power and each phase booster circuit of correspondence respectively;
Described booster circuit comprises 3 groups of electric capacity C respectively 1/ C 2, C 3/ C 4, C 5/ C 6with 3 groups of diode half-bridge VD 2/ VD 3, VD 6/ VD 7, VD 10/ VD 11, the mid point of 3 groups of diode half-bridge links together, and forms virtual approximate mains neutral point N '; 3 groups of electric capacity C 1/ C 2, C 3/ C 4, C 5/ C 6mid point be connected on filter inductance L respectively 1, L 2, L 3right-hand member;
Described rectification circuit comprises 6 diode VD 1, VD 4, VD 5, VD 8, VD 9, VD 12; Wherein diode VD 1, VD 5, VD 9cathode interconnect forms output dc voltage U danode; Diode VD 1, VD 5, VD 9anode connect diode VD respectively 2, VD 6, VD 10negative electrode; Diode VD 1, VD 5, VD 9negative electrode connect VD respectively 3, VD 7, VD 11anode; Diode VD 4, VD 8, VD 12anode interconnect form output dc voltage U dnegative terminal;
Described filtered electrical routing capacitance C 7and C 8forward be composed in series mutually, its mid point is N 2, at C 7and C 8on obtain output dc voltage U d.
The utility model further improves and is: inductance L 1, L 2, L 3be 3 single-phase inductance or 1 three pole reactor.
The utility model further improves and is: 3 phase supply voltage A, B, C are symmetrical, inductance L 1, L 2and L 3equal, electric capacity C 1, C 2, C 3, C 4, C 5, C 6equal, electric capacity C 7, C 8equal; Booster circuit diode mid point N ' and electric capacity C 7and C 8mid point N 2equipotential, N ' point and N 2point connects or does not connect.
The utility model further improves and is: 3 phase supply voltage A, B, C are symmetrical, inductance L 1, L 2and L 3equal, electric capacity C 1, C 2, C 3, C 4, C 5, C 6equal, electric capacity C 7, C 8equal; Input in the electric current of 3 phase power supply A, B, C and do not comprise zero-sequence component.
The utility model further improves and is: 3 phase power supplys of voltage doubling rectifing circuit are 3 phase 4 lines; The neutral point N of 3 phase power supplys is connected with the mid point N ' of 3 groups of diode half-bridge, the neutral point N of 3 phase power supplys not with N 2point is connected.
The utility model further improves and is: 3 phase power supplys of voltage doubling rectifing circuit are 3 phase 4 lines; The neutral point N of 3 phase power supplys, the mid point N ' of 3 groups of diode half-bridge, and C 7and C 8mid point N 23 link together.
The utility model further improves and is: containing zero-sequence component in 3 phase currents of A, B, C three-phase, inductance L 1, L 2and L 33 single-phase inductance.
A kind of voltage doubling rectifing circuit, comprises inductance L 4, electric capacity C 9, electric capacity C 10, diode VD 14, diode VD 15, diode VD 13, diode VD 16with electric capacity C 11;
Inductance L 4be connected on a pair electric capacity C in the positive pole of input ac power US and booster circuit 9, electric capacity C 10mid point between;
Diode VD 14, diode VD 15forward connect, VD 14negative electrode upwards with C 9positive pole connect, VD 15anode downwards and C 10negative pole connect; VD 14and VD 15mid point connect the negative pole of input ac power US;
Diode VD 13anode connect VD 14negative electrode, diode VD 13negative electrode connect electric capacity C 11positive pole; Diode VD 16negative electrode connect VD 15anode, diode VD 16anode connect electric capacity C 11negative pole.
A kind of voltage doubling rectifing circuit, comprises inductance L 5, electric capacity C 12, electric capacity C 13, diode VD 18, diode VD 19, diode VD 17, diode VD 20, electric capacity C 14with electric capacity C 15;
Inductance L 5be connected on a pair electric capacity C in the positive pole of input ac power US and booster circuit 12, electric capacity C 13mid point between;
Diode VD 18, diode VD 19forward connect, VD 18negative electrode upwards with C 12positive pole connect, VD 19anode downwards and C 13negative pole connect;
Diode VD 17anode connect VD 18negative electrode, diode VD 17negative electrode connect electric capacity C 14positive pole; Diode VD 20negative electrode connect VD 19anode, diode VD 19anode connect electric capacity C 15negative pole; Electric capacity C 14with electric capacity C 15in sequential series, electric capacity C 14with electric capacity C 15mid point connect VD 18and VD 19mid point and the neutral point N of input ac power US.
In the utility model, rectification circuit is made up of 6 diodes, VD 1, VD 5and VD 9be connected into commoncathode, realize carrying out rectification to 3 forward voltages after boosting, its common cathode is output dc voltage U d" anode "; VD 4, VD 8and VD 12be connected into common-anode, realize carrying out rectification to 3 negative voltage after boosting, its public anode is output dc voltage U d" negative terminal ".
Relative to prior art, the utility model has following beneficial effect: the utility model can be used for all needs and under fixing alternating voltage, obtains the occasion higher than common bridge-type or double half-wave rectification voltage through diode rectification, such as power quality control technology field.The utility model voltage doubling rectifing circuit, 2 times that can realize that rectification output dc voltage reaches line voltage peak when three phase mains by the rectification circuit of diode and electric capacity composition; Or 2 times or 4 times that realize when single phase poaer supply that rectification output dc voltage reaches phase voltage peak value; The utility model circuit topology is only made up of diode and electric capacity, does not need step-up transformer.Be applicable to powerful application scenario.Circuit is simple, volume is little, cost is low.
[accompanying drawing explanation]
Fig. 1 is the topology diagram of 3 phase voltage doubling rectifing circuits of the present utility model;
Fig. 2 is a kind of topology diagram of voltage doubling rectifing circuit of the present utility model when being applied to single-phase rectifier;
Fig. 3 is the another kind of topology diagram of voltage doubling rectifing circuit of the present utility model when being applied to single-phase rectifier.
[embodiment]
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.、
Refer to shown in Fig. 1, a kind of 3 phase voltage doubling rectifing circuits of the utility model, comprising: filter inductance 1, booster circuit 2, rectification circuit 3 and filter circuit 4.
" (1) 3 phase inlet wire filter inductance " but 3 single-phase inductance also can be 1 three pole reactors, use L respectively 1, L 2and L 3represent, be used for limiting the harmonic current of injected AC source A, B, C.
By 3, relatively independent and identical part forms and corresponds respectively to 3 phases (2) 3 phase booster circuits, and every phase booster circuit is made up of 2 electric capacity and 2 diodes; For A phase, by electric capacity C 1, electric capacity C 2, diode VD 2with diode VD 3composition, C 1and C 2two electrical condensers are to series connection, and its mid point is through inductance L 1connect A phase, diode VD 2and VD 3forward connect, VD 2negative electrode upwards with C 1the other end connect, VD 3anode downwards and C 2the other end connect; The booster circuit of B phase is by C 3, C 4, VD 6and VD 7composition, the booster circuit of C phase is by C 5, C 6, VD 10and VD 11composition, connection is identical with A phase, repeats no more; VD 2and VD 3mid point, VD 6and VD 7mid point, VD 10and VD 11mid point, three mid points connect together, and are designated as N ' point.The voltage max of each boost capacitor is the half of input ac power line voltage peak, through with input ac power voltage superposition after realize " boosting " and act on.
(3) 3 commutating phase circuit are made up of 6 diodes, diode VD 1, diode VD 5with diode VD 9anode meets C respectively 1and VD 2tie point, C 3and VD 6tie point and C 5and VD 10tie point, VD 1, VD 5and VD 9it is output dc voltage U that negative electrode is connected together d" anode "; Diode VD 4, diode VD 8with diode VD 12negative electrode meets C respectively 2and VD 3tie point, C 4and VD 7tie point and C 6and VD 11tie point, VD 4, VD 8and VD 12it is output dc voltage U that anode is connected together d" negative terminal ".VD 1, VD 5and VD 9be connected into commoncathode, realize carrying out rectification to 3 forward voltages after boosting, its common cathode is output dc voltage U d" anode "; VD 4, VD 8and VD 12be connected into common-anode, realize carrying out rectification to 3 negative voltage after boosting, its public anode is output dc voltage U d" negative terminal ".
(4) filtered electrical routing capacitance C 7with electric capacity C 8composition, C 7and C 8forward connect, C 7upper end and VD 1, VD 5and VD 9negative electrode is connected together, C 8lower end and VD 4, VD 8and VD 12anode is connected together, C 7and C 8mid point be designated as N 2point.
Symmetrical at 3 phase supply voltage A, B, C, inductance L 1, L 2and L 3equal, electric capacity C 1, C 2, C 3, C 4, C 5, C 6equal, and electric capacity C 7, C 8under equal condition, booster circuit diode mid point " N ' " and electric capacity C 7and C 8mid point " N 2" be equipotential.Therefore, " N ' " put and " N 2" put and can be connected together, can not be connected together, the two does not have difference yet.
Under the condition that above-mentioned power supply and circuit are all symmetrical, A, B and C etc. 3 phase current there is no zero-sequence component, so do not need neutral point " N ".Suitable increase inductance L 1, L 2and L 3the harmonic wave in source current can be reduced.Equally, due to A, B and C etc. 3 phase current there is no zero-sequence component, so, inductance L 1, L 2and L 3can be 13 phase inductance, also can be 3 single-phase inductance.
When the voltage doubling rectifing circuit of accompanying drawing 1 of the present utility model is run, electric capacity C 1, C 2, C 3, C 4, C 5and C 6on voltage max be respectively the half of line voltage peak; Electric capacity C 7and C 8on voltage max be respectively line voltage peak; Output dc voltage U dmaximum be 2 times of line voltage peak.
A kind of topological structure when voltage doubling rectifing circuit of the present utility model is applied to single-phase rectifier is illustrated in accompanying drawing 2.C 9, C 10, VD 14and VD 15with the C in accompanying drawing 1 1, C 2, VD 2and VD 3operating state principle on identical, through diode VD 13and VD 16at C after rectification 11on obtain rectification output dc voltage U dmaximum be 2 times of input phase voltage peak value.
Another kind of topological structure when voltage doubling rectifing circuit of the present utility model is applied to single-phase rectifier is illustrated in accompanying drawing 3.C 12, C 13, VD 18and VD 19with the C in accompanying drawing 1 1, C 2, VD 2and VD 3operating state principle on identical, through diode VD 17at C after rectification 14on obtain that direct voltage maximum is input phase voltage peak value 2 times; Through diode VD 20at C after rectification 15on obtain that direct voltage maximum is also input phase voltage peak value 2 times.Final at C 14and C 15on obtain rectification output dc voltage U dmaximum be 4 times of input phase voltage peak value.

Claims (9)

1. a voltage doubling rectifing circuit, is characterized in that, comprises filter inductance, booster circuit, rectification circuit and filter circuit;
Described filter inductance comprises inductance L 1, L 2, L 3, each phase inductance is connected between a pair electric capacity mid point in A, B, C phase of input ac power and each phase booster circuit of correspondence respectively;
Described booster circuit comprises 3 groups of electric capacity C respectively 1/ C 2, C 3/ C 4, C 5/ C 6with 3 groups of diode half-bridge VD 2/ VD 3, VD 6/ VD 7, VD 10/ VD 11, the mid point of 3 groups of diode half-bridge links together, and forms virtual approximate mains neutral point N '; 3 groups of electric capacity C 1/ C 2, C 3/ C 4, C 5/ C 6mid point be connected on filter inductance L respectively 1, L 2, L 3right-hand member;
Described rectification circuit comprises 6 diode VD 1, VD 4, VD 5, VD 8, VD 9, VD 12; Wherein diode VD 1, VD 5, VD 9cathode interconnect forms output dc voltage U danode; Diode VD 1, VD 5, VD 9anode connect diode VD respectively 2, VD 6, VD 10negative electrode; Diode VD 1, VD 5, VD 9negative electrode connect VD respectively 3, VD 7, VD 11anode; Diode VD 4, VD 8, VD 12anode interconnect form output dc voltage U dnegative terminal;
Described filtered electrical routing capacitance C 7and C 8forward be composed in series mutually, its mid point is N 2, at C 7and C 8on obtain output dc voltage U d.
2. a kind of voltage doubling rectifing circuit according to claim 1, is characterized in that, inductance L 1, L 2, L 3be 3 single-phase inductance or 1 three pole reactor.
3. a kind of voltage doubling rectifing circuit according to claim 1, is characterized in that, 3 phase supply voltage A, B, C are symmetrical, inductance L 1, L 2and L 3equal, electric capacity C 1, C 2, C 3, C 4, C 5, C 6equal, electric capacity C 7, C 8equal; Booster circuit diode mid point N ' and electric capacity C 7and C 8mid point N 2equipotential, N ' point and N 2point connects or does not connect.
4. a kind of voltage doubling rectifing circuit according to claim 1, is characterized in that, 3 phase supply voltage A, B, C are symmetrical, inductance L 1, L 2and L 3equal, electric capacity C 1, C 2, C 3, C 4, C 5, C 6equal, electric capacity C 7, C 8equal; Input in the electric current of 3 phase power supply A, B, C and do not comprise zero-sequence component.
5. a kind of voltage doubling rectifing circuit according to claim 1, is characterized in that, 3 phase power supplys of voltage doubling rectifing circuit are 3 phase 4 lines; The neutral point N of 3 phase power supplys is connected with the mid point N ' of 3 groups of diode half-bridge, the neutral point N of 3 phase power supplys not with N 2point is connected.
6. a kind of voltage doubling rectifing circuit according to claim 1, is characterized in that, 3 phase power supplys of voltage doubling rectifing circuit are 3 phase 4 lines; The neutral point N of 3 phase power supplys, the mid point N ' of 3 groups of diode half-bridge, and C 7and C 8mid point N 23 link together.
7. a kind of voltage doubling rectifing circuit according to claim 1, is characterized in that, containing zero-sequence component in 3 phase currents of A, B, C three-phase, and inductance L 1, L 2and L 33 single-phase inductance.
8. a voltage doubling rectifing circuit, is characterized in that, comprises inductance L 4, electric capacity C 9, electric capacity C 10, diode VD 14, diode VD 15, diode VD 13, diode VD 16with electric capacity C 11;
Inductance L 4be connected on a pair electric capacity C in the positive pole of input ac power US and booster circuit 9, electric capacity C 10mid point between;
Diode VD 14, diode VD 15forward connect, VD 14negative electrode upwards with C 9positive pole connect, VD 15anode downwards and C 10negative pole connect; VD 14and VD 15mid point connect the negative pole of input ac power US;
Diode VD 13anode connect VD 14negative electrode, diode VD 13negative electrode connect electric capacity C 11positive pole; Diode VD 16negative electrode connect VD 15anode, diode VD 16anode connect electric capacity C 11negative pole.
9. a voltage doubling rectifing circuit, is characterized in that, comprises inductance L 5, electric capacity C 12, electric capacity C 13, diode VD 18, diode VD 19, diode VD 17, diode VD 20, electric capacity C 14with electric capacity C 15;
Inductance L 5be connected on a pair electric capacity C in the positive pole of input ac power US and booster circuit 12, electric capacity C 13mid point between;
Diode VD 18, diode VD 19forward connect, VD 18negative electrode upwards with C 12positive pole connect, VD 19anode downwards and C 13negative pole connect;
Diode VD 17anode connect VD 18negative electrode, diode VD 17negative electrode connect electric capacity C 14positive pole; Diode VD 20negative electrode connect VD 19anode, diode VD 19anode connect electric capacity C 15negative pole; Electric capacity C 14with electric capacity C 15in sequential series, electric capacity C 14with electric capacity C 15mid point connect VD 18and VD 19mid point and the neutral point N of input ac power US.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105048827A (en) * 2015-07-01 2015-11-11 国家电网公司 Voltage multiplying rectification circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105048827A (en) * 2015-07-01 2015-11-11 国家电网公司 Voltage multiplying rectification circuit
CN105048827B (en) * 2015-07-01 2017-10-31 国家电网公司 Voltage doubling rectifing circuit

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