考虑定子转动故障对永磁电机退磁的IPM型无刷直流电机特性分析

Hyung-Kyu Kim, J. Hur, Byeong-Woo Kim, G. Kang
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引用次数: 15

摘要

对称三相电机的定子匝数故障导致大的循环电流流过,从而在短匝数内产生过多的热量,产生不规律的三相控制电流,导致退磁。永磁材料在退磁过程中产生气隙磁通分布畸变,引起转矩恶化,机械振动等问题。为了使永磁电机的机械振动最小化,设计了永磁电机的最佳形状,并分析了短匝循环电流对永磁电机退磁和电机性能的影响。为此,本文建立了一种基于有限元的定子转动故障仿真模型。采用建立的暂态分析方法,在考虑短匝循环电流的连续控制三相输入电流下,分析了IPM型无刷直流电机的消磁现象。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characteristic analysis of IPM type BLDC motor considering the demagnetization of PM by stator turn fault
A stator turn fault in a symmetrical three-phase machine cause a large circulating current to flow and subsequently generated excessive heat in shorted turns, generate irregular control current of the three phase leads to demagnetization. The demagnetization of PM occurred distortion of air-gap magnetic flux distribution caused deterioration of their torque, mechanical vibration etc. In this paper, for minimization of mechanical vibration, the optimal PM shape is designed and the effect of the circulating current in shorted turns on the demagnetization of PM and motor performance is analyzed. For this analysis, this paper developed a FE-based simulation model with a stator turn fault modeling. The demagnetization phenomenon in IPM type BLDC is analyzed under continuously controlled 3-phase input current considering the circulating current in shorted turn using the developed transient analysis method.
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