基于无电感升压拓扑的无刷直流电机电流控制策略

doi:10.19595/j.cnki.1000-6753.tces.191496

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摘要该文利用MOSFET、二极管和电容设计一种结构简单的升压拓扑结构,用以驱动无刷直流电机。该结构无需电感,有利于减小驱动系统的成本与体积。结合升压拓扑的输出方式与无刷直流电机的运行方式,该文构建保证驱动系统正常工作的四种开关矢量,并进一步提出一种基于升压拓扑的无刷直流电机电流控制策略。在无刷直流电机的换相区及非换相区,通过选择合适的矢量作用即可实现平稳的电流控制。此外,在换相区采用统一的控制方式可以有效地抑制换相转矩波动,无需根据转速区间切换控制策略。

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关键词 ：无刷直流电机, 升压拓扑, 电流控制, 换相转矩波动

Abstract：In this paper, a Boost topology is designed using MOSFETs, diodes and capacitors. This structure does not require inductors, which is beneficial to reduce the cost and volume of the drive system. Combined the output mode of Boost topology with the operation mode of brushless DC motor (BLDCM), four switching vectors are constructed to ensure the normal operation of the drive system, and a current control strategy of BLDCM based on Boost topology is further proposed. In commutation period and non-commutation period of BLDCM, current control can be realized by selecting the appropriate vector. In addition, in the commutation period, a unified control method can be used to suppress the commutation torque ripple without switching control strategies according to the speed range.

Key words： Brushless DC motor (BLDCM) Boost topology current control commutation torque ripple

收稿日期: 2019-11-15

PACS:

TM33

基金资助:国家自然科学基金（51807141）、天津市自然科学基金（18JCQNJC74200）和博士后创新人才支持计划（BX20200289）资助项目

通讯作者: 曹彦飞女,1990年生,博士,研究方向为电机控制与电力电子技术。E-mail: caoyanfei@zju.edu.cn

作者简介: 陆海天男,1995年生,硕士,研究方向为无刷直流电机系统及其控制。E-mail: luhaitian@tju.edu.cn

引用本文:

曹彦飞, 陆海天, 李新旻, 史婷娜. 基于无电感升压拓扑的无刷直流电机电流控制策略[J]. 电工技术学报, 2021, 36(6): 1249-1258. Cao Yanfei, Lu Haitian, Li Xinmin, Shi Tingna. Current Control Strategy of Brushless DC Motor Based on Non-Inductive Boost Topology. Transactions of China Electrotechnical Society, 2021, 36(6): 1249-1258.

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