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Dual-motor drive inverter

A dual-motor drive and inverter technology, applied in the direction of controlling multiple AC motors, electrical components, high-efficiency power electronic conversion, etc., can solve the problems of high cost and many electronic components, achieve low cost, improve efficiency, and realize The effect of zero voltage turn-on

Inactive Publication Date: 2016-08-17
LG ELECTRONICS CHINA RANDD CENT SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention is a double-motor-driven inverter, using six switching tube bridge arms connected in parallel between the positive and negative poles to control the operation of the two motors respectively, which solves the problem of using electronic components in the motor-driven inverter in the prior art. Many, higher cost issues

Method used

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the spirit of the disclosure of the present invention will be clearly described below with the accompanying drawings and detailed descriptions. Any person skilled in the art will understand the embodiments of the present invention. , when it can be changed and modified by the technology taught in the content of the present invention, it does not depart from the spirit and scope of the content of the present invention.

[0036] The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention. In addition, elements / members with the same or similar numbers used in the drawings and embodiments are used to represent the same or similar parts.

[0037] As used herein, "first", "second", ... etc. do not specifically refer to a sequence or order, nor are they used to limit the p...

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Abstract

The invention provides a dual-motor drive inverter. The dual-motor drive inverter comprises a direct-current power supply, six switching tube bridge arms and two motors; each switching tube bridge arm is connected between the positive pole and negative pole of the direct-current power supply; each switching tube bridge arm is compose of a transistor and a diode which are in series connection; and the first center line of the first motor is connected with the positive bus of the direct-current power supply, the second center line of the second motor is connected with the negative bus of the direct-current power supply, and the three phases of each motor are connected with the middle points of the switching tube bridge arms, and therefore, control on the three-phase voltage of the two motors can be realized. The dual-motor drive inverter of the invention has the advantages of simple structure and few used electronic components. According to the dual-motor drive inverter adopted, the zero-voltage switching on of the switching devices can be realized, and the efficiency of the dual-motor drive inverter can be improved.

Description

technical field [0001] The invention relates to a motor control technology, in particular to a motor-driven inverter, specifically a dual-motor driven inverter. Background technique [0002] The inverter converts DC power (battery, storage battery) into AC power (generally 220V, 50Hz sine wave). Inverters are generally composed of inverter bridges, control logic and filter circuits. Inverters are widely used in air conditioners, home theaters, electric grinding wheels, and motor-driven tools. [0003] At present, the inverter plays an important role in the motor drive control. The circuit diagram of the inverter driving the three-phase motor in the prior art is as follows figure 1 as shown, figure 1 It is a single-motor drive inverter composed of three switch bridge arms, and each switch bridge arm controls one phase voltage of a three-phase motor. In the prior art, there is still a circuit structure that uses an inverter to drive dual motors. In the prior art, there are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P5/74H02M7/5387
CPCY02B70/10
Inventor 庄凯
Owner LG ELECTRONICS CHINA RANDD CENT SHANGHAI CO LTD
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