Electric energy quality optimization method of motor system

A technology of power quality and optimization method, applied in the direction of control system, control generator, vector control system, etc., can solve the problem of little research on MC-PMSM system

Active Publication Date: 2020-10-20
ZHEJIANG UNIV
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Problems solved by technology

[0006] Although the predecessors have done a lot of research on expanding the input reactive power range of the MC-PMSM system, they are all based on three-phase input and three-phase output, and there is little research on the MC-PMSM system with three-phase input and five-phase output

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  • Electric energy quality optimization method of motor system
  • Electric energy quality optimization method of motor system
  • Electric energy quality optimization method of motor system

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[0026] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] See figure 2 , figure 2 is the invention according to figure 1 The power quality optimization method proposed by the five-phase direct matrix converter-permanent magnet synchronous motor integrated system, as shown in the figure, the optimization method includes the following steps:

[0028] S1. According to the requirements of the input side and output side voltage vectors of the five-phase direct matrix converter, through coordinate transformation, calculate the modulation matrix expression containing free variables under the two-phase stationary coordinate system, and calculate the three-phase through coordinate inverse transformation - the modulation matrix expression under the five-phase stationary coordinate system, and superimpose the co...

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Abstract

The invention discloses an electric energy quality optimization method of a motor system. The motor system is a five-phase direct matrix converter-permanent magnet synchronous motor integrated system,and the optimization method realizes input reactive power maximization of the five-phase direct matrix converter under constraint according to a generalized expression and constraint conditions of amodulation matrix of the five-phase direct matrix converter. Therefore, the algorithm fills the blank of an algorithm for expanding the input reactive power range of the five-phase matrix converter, and the input reactive power control range of a five-phase matrix converter-permanent magnet synchronous motor system is expanded.

Description

technical field [0001] The invention relates to the field of modulation algorithms for matrix converters, in particular to a modulation algorithm for extending the input reactive power range of a five-phase direct matrix converter-permanent magnet synchronous motor system. Background technique [0002] In recent years, the matrix converter-permanent magnet synchronous motor (MC-PMSM) system has received increasing attention. Compared with the traditional AC-DC-AC converter, the system can improve the voltage and current quality of the input side, has energy feedback capability and higher power density. In addition, a very important advantage of this system is that it can control the input power factor within a certain range. By adjusting the input reactive power, not only the unit power factor operation of the system can be realized, but also reactive power can be provided to the grid to support the grid voltage and improve the power quality of the grid. Compared with trad...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/22H02P21/00H02J3/16
CPCH02J3/16H02P21/0003H02P21/22Y02E40/30
Inventor 邱麟李尧黄晓艳吴立建方攸同
Owner ZHEJIANG UNIV
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