基于ZETA变换器的无刷直流电机换相转矩脉动抑制新方法

Zhen Chen, Hancheng Zhang, Xiangdong Liu, Hengzai Hu, J. Zhao, Congzhe Gao
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引用次数: 3

摘要

换向间隔产生的换向转矩脉动是无刷直流电动机的主要缺点之一,制约了其应用。为了减小换相转矩脉动,本文提出并研究了一种包含零能量热核组件(ZETA)变换器和直流链路电压选择电路的新型电路拓扑结构。首先,分析了换相的原因。然后计算出该电路拓扑所需的直流链路电压,使输入和输出相电流在换相过程中以相同的速率变化,并有效地减小换相转矩脉动。仿真结果表明,该拓扑结构在低速和高速运行时都能有效抑制换向转矩脉动。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new method to suppress the commutation torque ripple for BLDC motor based on ZETA converter
The commutation torque ripple generated in the commutation interval is one of the main drawbacks of Brushless DC (BLDC) motor and restricts its applications. In this paper, in order to reduce the commutation torque ripple, a novel circuit topology including a zero energy thermonuclear assembly (ZETA) converter and a dc-link voltage selection circuit is proposed and investigated. Firstly, the cause of commutation is analyzed. Then the desired DC link voltage is calculated for the novel circuit topology to make the incoming and outgoing phase currents change at the same rate during commutation, and to effectively reduce the commutation torque ripple. Finally, simulation results show that the proposed topology can effectively suppress the commutation torque ripple under both low-speed and high-speed operation.
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