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Multiphase motor control system based on driving of multiphase matrix converter

A multi-phase matrix and multi-phase motor technology, applied in the field of electric transmission, can solve problems such as low power factor, inability to flow bidirectionally, increase in volume and weight, etc., achieve high-precision speed regulation performance, improve efficiency, and reduce impact effects

Inactive Publication Date: 2012-08-01
杭州锐方科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1) The two-way flow of power cannot be achieved now, and when the motor is in the braking state, it cannot effectively feed back electric energy to the grid;
[0009] 2) The power factor at the input end cannot be adjusted, especially

Method used

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  • Multiphase motor control system based on driving of multiphase matrix converter
  • Multiphase motor control system based on driving of multiphase matrix converter
  • Multiphase motor control system based on driving of multiphase matrix converter

Examples

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Example Embodiment

[0023] Embodiment: The present invention takes a six-phase motor as an example to describe a multi-phase motor control system driven by a multi-phase matrix converter. The structure and working principle of the entire system will be explained in detail below with reference to the accompanying drawings.

[0024] refer to figure 1 , a multi-phase motor control system driven by a multi-phase matrix converter, including a multi-phase matrix converter, the multi-phase matrix converter consists of 18 bidirectional switch tubes to form a 3×6 multi-phase matrix converter, the input side is connected with the three The phase AC power supply is connected, the output side is connected with the multi-phase motor, and the on and off of each switch tube is controlled by the trigger pulse signal sent by the control.

[0025] refer to figure 2 , figure 2 for figure 1 The structure diagram of the six-phase motor shown in , the six phases of the six-phase motor are ABC, XYZ, and the differ...

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Abstract

The invention relates to a multiphase motor control system based on the driving of a multiphase matrix converter, which comprises the multiphase matrix converter composed of 3*3n two-way switch tubes to form a 3*3n switch matrix, the on and off of each of the switch tubes are controlled by trigger pulse signals sent by a controller, an input side is connected with a three-phase alternating-current power source, an output side is connected with a multiphase motor with the phase number of 3*n (n is a positive integer which is more than or equal to 2), and the multiphase matrix converter serving as a driving system of the multiphase motor matches with the multiphase motor. The multiphase motor control system has the advantages that compared with the prior art, the efficiency is higher, the whole control system guarantees the multiphase motor to be provided with high accurate speed control performance and four phase limit operation of the multiphase motor, is capable of feeding energy back to the power system, and greatly improves the efficiency of the system during the operation of the multiphase motor; and the influence of the system to the quality of the electric energy of the power system is greatly reduced, and factors such as harmonic wave and power are improved greatly, particularly when the multiphase motor operates in low load.

Description

technical field [0001] The invention relates to the field of electrical transmission, in particular to a multi-phase motor control system driven by a multi-phase matrix converter. Background technique [0002] The main application fields of polyphase motors are high reliability requirements and medium and high power occasions: such as nuclear power plants, electric vehicles, ship propulsion systems, aerospace, etc. In the field of medium and high power transmission, due to the limitation of traditional three-phase electric power supply, most of the three-phase motors are used as transmission equipment. way to supply power to the motor. There are two main research directions in the field of medium and high power, one is multi-level drive to provide power level, the other is to use multi-phase drive to improve power level, and multi-level drive is powered by power electronics The identity of the device itself is affected, there is a problem of voltage division when the power...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/24
Inventor 王海兵寿金乔张政毓林悦
Owner 杭州锐方科技有限公司
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