模糊占空比调制永磁同步电机模型预测转矩控制  

Model Predictive Torque Control for Permanent Magnet SynchronousMotor Using Fuzzy Duty Cycle Modulation

作　　者：李耀华[1] 邓益志 张鑫泉 童瑞齐 丁红 郭伟超 王钦政 LI Yaohua;DENG Yizhi;ZHANG Xinquan;TONG Ruiqi;DING Hong;GUO Weichao;WANG Qinzheng(School of Automotive,Chang’an University,Xi’an 710064,China)

机构地区：[1]长安大学汽车学院,陕西西安710064

出　　处：《电机与控制应用》2023年第6期21-29,共9页Electric machines & control application

基　　金：西安市碑林区科技计划项目(GX2252)。

摘　　要：传统模型预测转矩控制(MPTC)电压矢量作用于整个采样周期,会造成较大的磁链和转矩脉动。因此,提出模糊占空比调制永磁同步电机MPTC,采用MPTC选择施加的电压矢量,采用模糊控制确定电压矢量占空比。仿真表明模糊占空比调制MPTC系统运行良好。与传统MPTC、磁链和转矩无差拍模型预测控制以及磁链和转矩无差拍控制占空比调制相比,模糊占空比调制MPTC可减小稳态转矩脉动均方根误差(RMSE)、磁链脉动RMSE均值及定子电流总谐波失真(THD)。由于降低了磁链和转矩脉动,MPTC更多地选择零电压矢量,因此虽然采用占空比调制,平均开关频率反而有所减小。The voltage vector is applied for the whole sampling period in conventional model predictive torque control(MPTC),which causes large stator flux and torque ripple.Therefore,a MPTC system for permanent magnet synchronous motor(PMSM)using fuzzy duty cycle modulation is proposed.The MPTC is used to select the applying voltage vector and fuzzy control is used to determine duty cycle of the voltage vector.The simulation results show that the fuzzy duty cycle modulation MPTC system operates well.Compared with the conventional MPTC,flux and torque deadbeat model predictive control and flux and torque deadbeat control with duty cycle modulation,the MPTC using fuzzy duty cycle modulation can decrease steady-state root mean square error(RMSE)of torque ripple,mean RMSE of flux ripple and total harmonic distortion(THD)of stator current.Due to the decrease of flux and torque ripple,MPTC chooses zero voltage vector more,so the average switching frequency is reduced although duty cycle modulation is used.

关 键 词：永磁同步电机(PMSM) 模型预测转矩控制(MPTC) 占空比调制 模糊控制 无差拍控制 

分 类 号：TM351[电气工程—电机]