Inverter topological structure used for dual motors

A topology and inverter technology, applied in the direction of controlling multiple AC motors, electrical components, output power conversion devices, etc., can solve problems such as difficult independent control, reduced control difficulty, and complex control, and achieve good results. Simple control, good control effect

Inactive Publication Date: 2017-05-17
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention aims at the traditional dual-motor inverter topology existing in the prior art, and the two motors usually share a common switching tube or capacitor, which makes the control complex and difficult to realize independent co...

Method used

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  • Inverter topological structure used for dual motors
  • Inverter topological structure used for dual motors
  • Inverter topological structure used for dual motors

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Embodiment

[0044] This embodiment provides an inverter topology for dual motors, including a positive bus bar, a negative bus bar, a first capacitor C1, a second capacitor C2, a first switching tube bridge arm, a second switching tube bridge arm, and a second switching tube bridge arm. The three switch tube bridge arms, the fourth switch tube bridge arm and the fifth switch tube bridge arm, the first switch tube bridge arm, the second switch tube bridge arm, the third switch tube bridge arm, the fourth switch tube bridge arm and the The bridge arm of the fifth switching tube is connected to the positive bus bar and the negative bus bar, and the five bridge arms are connected in parallel; the first capacitor C1 and the second capacitor C2 are connected in series between the positive bus bar and the negative bus bar, The series branch formed by the two capacitors forms a parallel relationship with the five bridge arms;

[0045] The first motor in the dual motors is respectively connected t...

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PUM

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Abstract

The invention provides an inverter topological structure used for dual motors. The inverter topological structure comprises a positive bus, a negative bus, a first capacitor, a second capacitor, a first switching tube bridge arm, a second switching tube bridge arm, a third switching tube bridge arm, a fourth switching tube bridge arm and a fifth switching tube bridge arm, wherein the first capacitor and the second capacitor are connected in series between the positive bus and the negative bus; a first motor of the dual motors is connected with the first capacitor, the second capacitor, the first switching tube bridge arm and the second switching tube bridge arm separately to form control connection between the first motor and a three-phase four-switch inverter; and the second motor of the dual motors is connected with the third switching tube bridge arm, the fourth switching tube bridge arm and the fifth switching tube bridge arm separately to form control connection between the second motor and a three-phase voltage type full-bridge inverter. The inverter topological structure used for the dual motors provided by the invention can realize actual independent control; and the control is simpler and the control effect is better.

Description

technical field [0001] The present invention relates to the technical field of motor control, in particular to an inverter topology for dual motors. Background technique [0002] In recent years, in many industrial applications, such as oil exploration, electric / hybrid vehicles, aerospace, etc., it is often necessary to control multiple motors with high performance, and the inverter topology of a single motor cannot meet the actual requirements. demand, the inverter topology and control strategy of dual motors have become a research hotspot in recent years. Considering the cost and control effect, the two motors share several switching tubes or capacitors at present, and then the common SPWM or SVPWM Corresponding improvements. [0003] After searching found: [0004] Shi Tingna, Zhang Bijun, Liu Tao, etc. published in "Chinese Journal of Electrical Engineering" (2015,35(6):1498-1507) "Dual permanent magnet synchronous motor system driven by a five-leg inverter. Optimal mo...

Claims

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Application Information

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IPC IPC(8): H02P5/74H02M7/5387
CPCH02M7/5387H02P5/74
Inventor 李伟高强
Owner SHANGHAI JIAO TONG UNIV
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