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A Pseudo-Totem Pole Three-Level Rectifier with Single-phase Three-Switch Transistor

A three-level rectification and totem pole technology, applied in electrical components, high-efficiency power electronic conversion, conversion of AC power input to DC power output, etc., can solve the problem of high voltage stress of power devices, and achieve high withstand voltage and reliability. High, simple structure

Active Publication Date: 2022-05-20
CHINA THREE GORGES UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a single-phase three-switch tube pseudo-totem-pole three-level rectifier, which combines the traditional totem-pole structure with a three-level rectifier bridge, maintains the advantages of the traditional totem-pole two-level rectifier, and utilizes the three-level technology Solve the problem of high voltage stress on power devices of two-level rectifiers

Method used

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  • A Pseudo-Totem Pole Three-Level Rectifier with Single-phase Three-Switch Transistor
  • A Pseudo-Totem Pole Three-Level Rectifier with Single-phase Three-Switch Transistor
  • A Pseudo-Totem Pole Three-Level Rectifier with Single-phase Three-Switch Transistor

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Embodiment Construction

[0038] Such as figure 1 As shown, a single-phase three-switch pseudo-totem-pole three-level rectifier includes: a single-phase pseudo-totem-pole structure, a filter, and a single-phase rectifier bridge with a bidirectional switch.

[0039] The single-phase pseudo-totem pole structure includes two power switch tubes: S 1 , S 2 , two diodes: D 1 、D 2 , composed of switching devices and diodes to form a pseudo-totem pole rectifier bridge arm, each bridge arm includes a power switching device and a diode. S 1 source and diode D 2 anode connected, S 1 Drain and Diode D 1 Anode connected; S 2 source and diode D 2 Cathode connected, S 2 Drain and Diode D 1 connected to the cathode.

[0040] The filter consists of two identical inductors L 1 , L 2 composition. Filter inductance L 1 , L 2 connected in parallel to one end of the AC power supply, and the other end to the S 1 The drain, S 2 connected to the source.

[0041] The single-phase rectifier bridge with a bidi...

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Abstract

A single-phase three-switch tube pseudo-totem-pole three-level rectifier comprises a single-phase pseudo-totem-pole structure, a filter, and a single-phase rectifier bridge with two-way switch tubes. Among them: the single-phase pseudo-totem pole structure consists of two fully-controlled power switch tubes and two ordinary diodes to form two asymmetric bridge arms; A group of bidirectional switch tubes, 2 identical capacitors and a load, the bidirectional switch tube structure is composed of 4 diodes and 1 fully controlled switch tube to realize the bidirectional flow of current. The single-phase three-switch tube pseudo-totem-pole three-level rectifier combines traditional totem-pole rectification technology and three-level topology technology. Compared with the traditional boost power factor correction rectifier, it can effectively reduce the stress of the switch tube. The conduction loss is small, and there is no bridge arm through phenomenon.

Description

technical field [0001] The invention relates to the technical field of power electronic electric energy conversion, in particular to a single-phase three-switch tube pseudo-totem pole three-level rectifier. Background technique [0002] In order to reduce the harm caused by high-order harmonics to electrical equipment caused by the power grid, a large number of power electronic equipment has been put into use. Due to the existence of the diode rectifier bridge in the traditional boost power factor correction circuit, the efficiency cannot be further improved. In recent years, the bridgeless power factor correction circuit has attracted much attention because it omits the conduction number of diodes in the conduction loop and effectively reduces the conduction loss of power devices. Among them, the traditional totem pole two-level rectifier topology has the advantages of higher efficiency, no bridge arm through-circuit, and fewer components than other topologies. However, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/217H02M7/219H02M7/797H02M1/42H02M1/32
CPCH02M7/217H02M7/219H02M7/797H02M1/4225H02M1/32Y02B70/10
Inventor 马辉徐甜川敬成刘昊邦
Owner CHINA THREE GORGES UNIV
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