CN213817574U - Ripple suppression rectifier based on coupling inductor - Google Patents
Ripple suppression rectifier based on coupling inductor Download PDFInfo
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- CN213817574U CN213817574U CN202022434707.7U CN202022434707U CN213817574U CN 213817574 U CN213817574 U CN 213817574U CN 202022434707 U CN202022434707 U CN 202022434707U CN 213817574 U CN213817574 U CN 213817574U
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Abstract
A ripple suppression rectifier based on a coupling inductor comprises a three-phase alternating-current power supply, a filter circuit, a Delta-type connection rectification circuit and an output loop. Three-phase AC power supply links to each other with filter circuit, and filter circuit links to each other with Delta type connection with rectifier circuit, and rectifier circuit links to each other with output circuit, and output circuit inductance adopts the coupling inductance, the utility model discloses compare with traditional rectifier, the output ripple is low, and voltage stability has stronger interference killing feature, has fine robustness.
Description
Technical Field
The utility model relates to a three-phase electric energy transform field, concretely relates to ripple restraines rectifier based on coupling inductance.
Background
The rapid development of the science and technology in the world today, various electronic devices emerge endlessly, the requirement of fine equipment on electric energy is gradually increased, many electronic devices are actually direct current loads, the electric energy provided by power grid power generation is alternating current, and the electric energy can be directly used after alternating current and direct current conversion, however, uncontrollable rectification or phase-controlled rectification in a power electronic device can generate a large amount of harmonic current on one side, the generation of the harmonic current can affect the use of many electronic devices, the service life of the power electronic devices is shortened, the efficiency and the utilization rate of the devices are reduced, some unnecessary malfunction is caused, the precision of some signal acquisition systems, measuring instruments and the like is reduced, and even the stable operation of the whole power system is affected.
Disclosure of Invention
In view of this, the utility model aims at providing a ripple restraines rectifier based on coupling inductance compares with traditional rectifier, and output voltage is more stable, and the output ripple is few, and the interference killing feature is stronger, has improved the conversion efficiency of circuit, has reduced the loss of circuit, has fine robustness, and application prospect is very extensive.
The utility model discloses the technical scheme who takes does:
a ripple rejection rectifier based on coupling inductance is characterized in that: the three-phase alternating current power supply comprises a three-phase alternating current power supply, a filter circuit, a Delta type connection rectification circuit and an output loop; the three-phase alternating current power supply is connected with the filter circuit, the filter circuit is connected with the rectifying circuit in a Delta type connection method, and the rectifying circuit is connected with the output loop. The three-phase alternating current power supply comprises an a-phase power supply, a b-phase power supply and a c-phase power supply; the filter circuit comprises a filter inductor L1, a filter capacitor C1, a filter inductor L2, a filter capacitor C2, a filter inductor L3 and a filter capacitor C3; the rectifying circuit comprises a diode D1a and a diode D1bDiode D2aDiode D2bDiode D3aDiode D3bDiode D4aDiode D4bDiode D5aDiode D5bDiode D6aDiode D6bSwitch S1, switch S2, switch S3, switch S4, switch S5, switch S6, and freewheeling diode D7The output loop comprises an inductor L4, an inductor L5, an inductor L6, an inductor L7, a capacitor C4 and a load impedance RLThe inductor L4 and the inductor L5 are a pair of coupled inductors, and the inductor L6 and the inductor L7 are a pair of coupled inductors, so as to reduce current ripple flowing into the inductors.
The three-phase alternating current power supply is a symmetrical three-phase current source, wherein the angle of the phase a power supply is advanced by 120 degrees compared with that of the phase b power supply, and the angle of the phase b power supply is advanced by 120 degrees compared with that of the phase c power supply.
One end of a filter inductor L1 in the filter circuit is connected with the phase a power supply, and the other end of the filter inductor L1 is connected with one end of a filter capacitor C1; one end of a filter inductor L2 is connected with a b-phase power supply, and the other end of the filter inductor L2 is connected with one end of a capacitor filter C2; one end of a filter inductor L3 is connected with the C-phase power supply, the other end of the filter inductor L3 is connected with one end of a filter capacitor C3, and the other ends of the filter capacitor C1, the filter capacitor C2 and the filter capacitor C3 are connected.
In the Delta type connection rectification circuit, a diode D1aCathode and diode D1bIs connected to the collector of the switching tube S1, and a diode D1a With a phase power supply and D4aIs connected to the cathode, D4aAnd D4bIs connected to the emitter of the switching tube S4, D4bAnd D1bThe anode of the anode is connected with a b-phase power supply; diode D3aCathode and diode D3bIs connected to the collector of the switching tube S3, and a diode D3a With b-phase power supply and D6aIs connected to the cathode, D6aAnd D6bIs connected to the emitter of a switching tube S6, D6bAnd D3bThe anode of the anode is connected with a c-phase power supply; diode D5aCathode and diode D5bIs connected to the collector of the switching tube S5, and a diode D5a With a c-phase power supply and D2aIs connected to the cathode, D2aAnd D2bIs connected to the emitter of a switching tube S2, D2bAnd D5bThe anode of the anode is connected with an a-phase power supply; the switch S1, the switch S3, the switch S5 are connected with the cathode of the diode Df and one end of the inductor L4; the switch S4, the switch S6, the switch S2 are connected with the anode of the diode D7 and one end of the inductor L5; the other ends of the inductor L4 and the inductor L5 are connected to both ends of the capacitor C6, respectively.
In the output loop, a coupling inductor with a coupling coefficient of M consisting of an inductor L4 and an inductor L5 is connected with the cathode of a diode D7 at one end, and connected with a capacitor C4 and a load impedance R at the other endLThe inductance L6 and the inductance L7 form a coupling coefficient ofM coupling inductor is connected with the anode of diode D7 and the other end of capacitor C4 and load impedance RLAnd the other end of the same.
The utility model relates to a ripple restraines rectifier based on coupling inductance has following advantage:
the utility model discloses trade the inductance for coupling inductance under Delta type rectifier structure for output voltage is more stable, and the ripple still less has better interference killing feature and robustness.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Fig. 2 is a waveform diagram of the output voltage and the output current before the coupling inductor is connected.
Fig. 3 is a waveform diagram of the output voltage and the output current after the coupling inductor is connected.
Detailed Description
Fig. 1 shows a ripple suppression rectifier based on a coupled inductor, which is characterized in that: the three-phase alternating current power supply comprises a three-phase alternating current power supply, a filter circuit, a Delta type connection rectification circuit and an output loop; the three-phase alternating current power supply is connected with the filter circuit, the filter circuit is connected with the rectifying circuit in a Delta type connection method, and the rectifying circuit is connected with the output loop. The three-phase alternating current power supply comprises an a-phase power supply, a b-phase power supply and a c-phase power supply; the filter circuit comprises a filter inductor L1, a filter capacitor C1, a filter inductor L2, a filter capacitor C2, a filter inductor L3 and a filter capacitor C3; the rectifying circuit comprises a diode D1a and a diode D1bDiode D2aDiode D2bDiode D3aDiode D3bDiode D4aDiode D4bDiode D5aDiode D5bDiode D6aDiode D6bSwitch S1, switch S2, switch S3, switch S4, switch S5, switch S6, and freewheeling diode D7The output loop comprises an inductor L4, an inductor L5, an inductor L6, an inductor L7, a capacitor C4 and a load impedance RLWherein, the inductor L4 and the inductor L5 are a pair of coupled inductors, and the inductor L6 and the inductor L7 are a pair of coupled inductors, so as to reduce the electricity flowing into the inductorsThe flow ripple.
The three-phase alternating current power supply is a symmetrical three-phase current source, wherein the angle of the phase a power supply is advanced by 120 degrees compared with that of the phase b power supply, and the angle of the phase b power supply is advanced by 120 degrees compared with that of the phase c power supply.
One end of a filter inductor L1 in the filter circuit is connected with the phase a power supply, and the other end of the filter inductor L1 is connected with one end of a filter capacitor C1; one end of a filter inductor L2 is connected with a b-phase power supply, and the other end of the filter inductor L2 is connected with one end of a capacitor filter C2; one end of a filter inductor L3 is connected with the C-phase power supply, the other end of the filter inductor L3 is connected with one end of a filter capacitor C3, and the other ends of the filter capacitor C1, the filter capacitor C2 and the filter capacitor C3 are connected.
In the Delta type connection rectification circuit, a diode D1aCathode and diode D1bIs connected to the collector of the switching tube S1, and a diode D1a With a phase power supply and D4aIs connected to the cathode, D4aAnd D4bIs connected to the emitter of the switching tube S4, D4bAnd D1bThe anode of the anode is connected with a b-phase power supply; diode D3aCathode and diode D3bIs connected to the collector of the switching tube S3, and a diode D3a With b-phase power supply and D6aIs connected to the cathode, D6aAnd D6bIs connected to the emitter of a switching tube S6, D6bAnd D3bThe anode of the anode is connected with a c-phase power supply; diode D5aCathode and diode D5bIs connected to the collector of the switching tube S5, and a diode D5a With a c-phase power supply and D2aIs connected to the cathode, D2aAnd D2bIs connected to the emitter of a switching tube S2, D2bAnd D5bThe anode of the anode is connected with an a-phase power supply; the switch S1, the switch S3, the switch S5 are connected with the cathode of the diode Df and one end of the inductor L4; the switch S4, the switch S6, the switch S2 are connected with the anode of the diode D7 and one end of the inductor L5; the other ends of the inductor L4 and the inductor L5 are connected to both ends of the capacitor C6, respectively.
In the output loop, a coupling inductor with a coupling coefficient of M consisting of an inductor L4 and an inductor L5 is connected with the cathode of a diode D7,the other end is connected with a capacitor C4 and a load impedance RLA coupling inductor with a coupling coefficient M consisting of an inductor L6 and an inductor L7 is connected with the anode of the diode D7 and the other end of the capacitor C4 and the load impedance RLAnd the other end of the same.
The above description is only for the preferred embodiment of the present invention, but not for limiting the present invention, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention, therefore, the protection scope of the present invention should be subject to the claims.
Claims (6)
1. A ripple rejection rectifier based on coupling inductance is characterized in that: the three-phase alternating current power supply comprises a three-phase alternating current power supply, a filter circuit, a Delta type connection rectification circuit and an output loop; the three-phase alternating current power supply is connected with the filter circuit, the filter circuit is connected with the rectifying circuit in a Delta type connection method, and the rectifying circuit is connected with the output loop; the three-phase alternating current power supply comprises an a-phase power supply, a b-phase power supply and a c-phase power supply; the filter circuit comprises a filter inductor L1, a filter capacitor C1, a filter inductor L2, a filter capacitor C2, a filter inductor L3 and a filter capacitor C3; the rectifying circuit comprises a diode D1a and a diode D1bDiode D2aDiode D2bDiode D3aDiode D3bDiode D4aDiode D4bDiode D5aDiode D5bDiode D6aDiode D6bSwitch S1, switch S2, switch S3, switch S4, switch S5, switch S6, and freewheeling diode D7The output loop includes an inductor L4, an inductor L5, an inductor L6, an inductor L7, a capacitor C4, and a load impedance RL, wherein the inductor L4 and the inductor L5 are a pair of coupling inductors, and the inductor L6 and the inductor L7 are a pair of coupling inductors, so as to reduce a current ripple flowing into the inductors.
2. A coupled inductor based ripple suppression rectifier as claimed in claim 1, wherein: the three-phase alternating current power supply is a symmetrical three-phase current source, wherein the angle of the phase a power supply is advanced by 120 degrees compared with that of the phase b power supply, and the angle of the phase b power supply is advanced by 120 degrees compared with that of the phase c power supply.
3. A coupled inductor based ripple suppression rectifier as claimed in claim 1, wherein: one end of a filter inductor L1 in the filter circuit is connected with the phase a power supply, and the other end of the filter inductor L1 is connected with one end of a filter capacitor C1; one end of a filter inductor L2 is connected with a b-phase power supply, and the other end of the filter inductor L2 is connected with one end of a capacitor filter C2; one end of a filter inductor L3 is connected with the C-phase power supply, the other end of the filter inductor L3 is connected with one end of a filter capacitor C3, and the other ends of the filter capacitor C1, the filter capacitor C2 and the filter capacitor C3 are connected.
4. A coupled inductor based ripple suppression rectifier as claimed in claim 1, wherein: in the Delta type connection rectification circuit, a diode D1aCathode and diode D1bIs connected to the collector of the switching tube S1, and a diode D1a With a phase power supply and D4aIs connected to the cathode, D4aAnd D4bIs connected to the emitter of the switching tube S4, D4bAnd D1bThe anode of the anode is connected with a b-phase power supply; diode D3aCathode and diode D3bIs connected to the collector of the switching tube S3, and a diode D3a With b-phase power supply and D6aIs connected to the cathode, D6aAnd D6bIs connected to the emitter of a switching tube S6, D6bAnd D3bThe anode of the anode is connected with a c-phase power supply; diode D5aCathode and diode D5bIs connected to the collector of the switching tube S5, and a diode D5a With a c-phase power supply and D2aIs connected to the cathode, D2aAnd D2bIs connected to the emitter of a switching tube S2, D2bAnd D5bThe anode of the anode is connected with an a-phase power supply; the switch S1, the switch S3, the switch S5 are connected with the cathode of the diode Df and one end of the inductor L4; the switch S4, the switch S6, the switch S2 are connected with the anode of the diode D7 and one end of the inductor L5; the other ends of the inductor L4 and the inductor L5 are respectively connected with the two ends of the capacitor C6。
5. A coupled inductor based ripple suppression rectifier as claimed in claim 1, wherein: in the output loop, a coupling inductor with a coupling coefficient of M consisting of an inductor L4 and an inductor L5 is connected with the cathode of a diode D7 at one end, and connected with a capacitor C4 and a load impedance R at the other endLA coupling inductor with a coupling coefficient M consisting of an inductor L6 and an inductor L7 is connected with the anode of the diode D7 and the other end of the capacitor C4 and the load impedance RLAnd the other end of the same.
6. A coupled inductor based ripple suppression rectifier as claimed in claim 1, wherein: inductor L4 is equivalent and fully coupled to inductor L5, and inductor L6 is equivalent and fully coupled to inductor L7.
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| CN202022434707.7U CN213817574U (en) | 2020-10-28 | 2020-10-28 | Ripple suppression rectifier based on coupling inductor |
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| CN202022434707.7U CN213817574U (en) | 2020-10-28 | 2020-10-28 | Ripple suppression rectifier based on coupling inductor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113726197A (en) * | 2021-09-30 | 2021-11-30 | 哈尔滨理工大学 | Single-inductor double-output Delta rectifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113726197A (en) * | 2021-09-30 | 2021-11-30 | 哈尔滨理工大学 | Single-inductor double-output Delta rectifier |
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