基于比例谐振的无刷直流电机电流规划控制  

Current Planning Control for Brushless DC Motor Based on Proportional Resonance

作　　者：谭博[1] 申科[1] 王西坡 刘卫国[1] TAN Bo;SHEN Ke;WANG Xipo;LIU Weiguo(Shaanxi Key Laboratory of Small & Special Electrical Machine and Drive Technology,School of Automation, Northwestern Polytechnical University, Xi'an 710129, China)

机构地区：[1]陕西省微特电机及驱动技术重点实验室西北工业大学自动化学院,西安710072

出　　处：《微电机》2018年第12期27-31,共5页Micromotors

基　　金：陕西省重点研发计划资助项目(2017GY048)

摘　　要：在三相六状态模式下工作的BLDCM存在较大的换相转矩脉动,采用电机反电势对电流波形进行规划的控制方法可以减小该转矩脉动。然而由于绕组电感的存在,会引起相电流滞后该相反电势的现象,从而导致电机相电流有效值和转矩脉动的增加。论文提出一种基于比例谐振的电流规划控制方法。该方法根据规划电流轨迹的傅里叶展开,采用基于比例谐振的电流环分别实现对电流基波和主要高次谐波的控制。最后,仿真结果表明所提出的方法可以减小相电流的滞后角度,抑制转矩脉动和减小电机铜耗。The brushless DC motor( BLDCM) operating in the three-phase six-state mode has a large commutation torque ripple,and the current planning control according to the back EMF of BLDCM can reduce the torque ripple. However,the BLDCM winding inductances cause the phase current to lag behind the back EMF,resulting in an increase of the phase current and torque ripple. The paper proposed a current planning control method based on proportional resonance( PR) control. According to the Fourier expansion of the planned current trajectory,the method used PR controller to control the current fundamental wave and the main higher harmonics,respectively. Finally,the simulation results show that the proposed method can reduce the lag angle of phase current,suppress torque ripple and reduce the copper loss.

关 键 词：无刷直流电机 电流规划 比例谐振控制 转矩脉动 

分 类 号：TM361[电气工程—电机]