中国电机工程学报Issue(21)：5592-5599,8.DOI:10.13334/j.0258-8013.pcsee.2015.21.024
一种合成电流控制的无刷直流电机转矩脉动抑制系统
Torque Ripple Reduction Systems for Brushless DC Motors With Resultant Current Control
摘要
Abstract
In the traditional double closed-loop speed control system, the Brushless DC Motor with un-commutated phase current feedback has large torque ripple because of the non-ideal trapezoidal wave back EMF and non-ideal square wave phase currents. To overcome this defect, the relational expression between the resultant current and the un-commutated phase current under each sector is derived by introducing the resultant current which is proportional to the instantaneous torque, and then the torque ripple reduction can be achieved by controlling the un-commutated phase current which corresponds to the resultant current. In addition, to reduce the torque ripple in the commutation region, a new modulation method based on PWM-on is adopted. During the commutation region, three phases can be modulated cooperatively. And with this modulation method, the changing rate of currents in the upcoming phase can be controlled equally to that of the outgoing phase by distributing different modulation duty to each phase. Finally, results of Matlab simulations and experiments with DSP are presented to verify the feasibility and effectiveness of the proposed strategy.关键词
无刷直流电机/合成电流控制/双闭环调速系统/转矩脉动抑制/配合调制Key words
brushless DC motor (BLDCM)/resultant current control/double-loop speed control system/torque ripple reduction/cooperative modulation分类
信息技术与安全科学引用本文复制引用
李珍国,王江浩,高雪飞,方一鸣..一种合成电流控制的无刷直流电机转矩脉动抑制系统[J].中国电机工程学报,2015,(21):5592-5599,8.基金项目
国家自然科学基金委员会与宝钢集团有限公司联合资助项目(U1260203)；国家自然科学基金项目(51477147)。 Project Supported by National Natural Science Foundation of China and Baosteel Group Co., Ltd.(U1260203) （U1260203）
Project Supported by National Natural Science Foundation of China (51477147) （51477147）
