永磁同步电机直接转矩控制新型占空比调制策略

doi:10.12068/j.issn.1005-3026.2018.12.001

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (12): 1673-1678.DOI: 10.12068/j.issn.1005-3026.2018.12.001

• 信息与控制 • 下一篇

永磁同步电机直接转矩控制新型占空比调制策略

袁天清，王大志，李烨，王兴宇

(东北大学信息科学与工程学院，辽宁沈阳110819)

收稿日期:2017-03-08 修回日期:2017-03-08 出版日期:2018-12-15 发布日期:2018-12-19
通讯作者: 袁天清
作者简介:袁天清(1989-)，男，山东临沂人，东北大学博士研究生；王大志(1963-)，男，辽宁锦州人，东北大学教授，博士生导师.冯明杰(1971-)，男，河南禹州人，东北大学副教授; 王恩刚(1962-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51171041).国家重点研发计划项目(2017YBF1300900).

Novel Duty Ratio Modulation Strategy for PMSM DTC System

YUAN Tian-qing， WANG Da-zhi， LI Ye， WANG Xing-yu

School of Information Science & Engineering， Northeastern University， Shenyang 110819， China.

Received:2017-03-08 Revised:2017-03-08 Online:2018-12-15 Published:2018-12-19
Contact: YUAN Tian-qing
About author:-
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摘要/Abstract

摘要： 针对传统永磁同步电机直接转矩控制系统转矩脉动和磁链脉动较大，现有占空比调制策略计算复杂等问题，提出一种新型占空比调制策略.该调制策略利用定子磁链和扇区电压矢量的作用角区分转矩脉动和磁链脉动在控制系统中的权重系数，并设计新型开关表，保证在任一控制周期中最佳电压矢量的选择.在保证系统计算量较低的前提下，利用权重系数和最佳电压矢量推导最优占空比计算公式.仿真和实验结果证明，所提出的新型占空比调制策略可以大幅度抑制转矩脉动和磁链脉动，获得较好的稳态运行性能，并保持系统快速动态响应性能.

关键词: 占空比调制, 永磁同步电机, 直接转矩控制, 转矩脉动, 磁链脉动

Abstract: In order to suppress the significant torque ripple and flux linkage ripple in CDTC(conventional direct torque control)-driven PMSM(permanent magnet synchronous motor)， and to reduce the calculations in conventional duty ratio modulation strategies， a novel duty ratio modulation strategy for PMSM DTC(direct torque control) system was proposed. The impact factors of torque and flux linkage ripples could be distinguished using the proposed strategy through the active angle between stator linkage and sector vector. A new switching table was designed to ensure the optimal choice of voltage vector. The simplified duty ratio calculation equations were obtained with the minimum calculations. Simulation and experimental results show that the novel modulation strategy can maintain the dynamic response in CDTC and suppress torque and flux linkage ripples efficiently.

Key words: duty ratio modulation, PMSM(permanent magnet synchronous motor), DTC(direct torque control), torque ripple, flux linkage ripple

中图分类号:

TM30

袁天清，王大志，李烨，王兴宇. 永磁同步电机直接转矩控制新型占空比调制策略[J]. 东北大学学报:自然科学版, 2018, 39(12): 1673-1678.

YUAN Tian-qing， WANG Da-zhi， LI Ye， WANG Xing-yu. Novel Duty Ratio Modulation Strategy for PMSM DTC System[J]. Journal of Northeastern University Natural Science, 2018, 39(12): 1673-1678.

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永磁同步电机直接转矩控制新型占空比调制策略

Novel Duty Ratio Modulation Strategy for PMSM DTC System

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