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Three-mode hybrid single-phase five-level rectifier

A three-mode, rectifier technology, applied in the direction of electrical components, high-efficiency power electronic conversion, AC power input conversion to DC power output, etc., can solve the problems of complex multi-level circuit structure, high loss, low reliability, etc., to achieve Reduced design cost, reduced switching loss, and improved reliability

Active Publication Date: 2020-07-14
CHINA THREE GORGES UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of complex structure, high loss and low reliability of the existing multi-level circuit structure

Method used

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  • Three-mode hybrid single-phase five-level rectifier
  • Three-mode hybrid single-phase five-level rectifier
  • Three-mode hybrid single-phase five-level rectifier

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Embodiment Construction

[0038] Such as figure 1 As shown, a three-mode hybrid single-phase five-level rectifier, including: AC power supply V S , inductance L, switch tube S 1 , S 2 , S 3 , Diode D 1 -D 10 , capacitance C 1 、C 2 .

[0039] Diode D is connected to one side of the AC power supply Vs 1 anode, diode D 2 a cathode, the connection node forming terminal b;

[0040] The other side of the AC power supply Vs is connected to one end of the inductor L, the other end of the inductor L is connected to the terminal a, and the diode D 4 cathode, diode D 3 The anodes are all connected to terminal a;

[0041] Switch tube S 1 Drain, Diode D 3 cathode, diode D 1 cathode, diode D 5 anode, connected to form connection point c;

[0042] Switch tube S 1 source, diode D 2 anode, diode D 4 anode, diode D 6 Cathode, connected to form contact d;

[0043] Switch tube S 3 Source, switch tube S 2 Drains are connected to terminal a;

[0044] Diode D 5 Cathode connection capacitance C 1 th...

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Abstract

The invention relates to a three-mode hybrid single-phase five-level rectifier. The three-mode hybrid single-phase five-level rectifier comprises an alternating current power supply Vs, an inductor L,switching tubes S1, S2 and S3, diodes D1-D10, capacitors C1 and C2 and a load RL. According to the three-mode hybrid single-phase five-level rectifier, the circuit topology of the rectifier needs a small number of switching tubes, so that the control difficulty of the topological structure of the rectifier and the design cost of the circuit of the rectifier are reduced to a certain extent, switching loss is reduced, and the working efficiency of the five-level rectifier is improved; and meanwhile, the passive rectification mode of a diode passive rectifier bridge can improve the reliability of the single-phase five-level rectifier, can guarantee the reliable external output of the five-level rectifier, and can guarantee the output even if a switching tube is in a damaged or fault state.

Description

technical field [0001] The invention relates to the technical field of multi-level electric energy conversion, in particular to a three-mode hybrid single-phase five-level rectifier Background technique [0002] In order to reduce the harmonic content of the input current of the rectifier and the voltage and current stress of the switch tube, researchers can not only reduce the harmonic content of the rectifier, but also reduce the voltage and current stress of the switch tube by adopting a multi-level method. However, the circuit structure of the multilevel converter is initially applied in the inverter circuit, but the multilevel is seldom applied in the rectifier. Until the past ten years, since the application of rectifiers in industrial occasions has become more and more extensive, in order to enrich the topological structure of rectifiers and meet the needs of different applications, many researchers have applied multi-level inverters to rectifier circuit structures. ...

Claims

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Application Information

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IPC IPC(8): H02M7/217H02M7/155H02M7/06H02M1/42
CPCH02M7/217H02M7/155H02M7/06H02M1/4208H02M1/0054Y02B70/10
Inventor 马辉郑凯通鲁海鹏
Owner CHINA THREE GORGES UNIV
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