基于DSP-FPGA永磁同步电机MTPA弱磁控制研究  

Research on MTPA Field Weakening Control of Permanent Magnet Synchronous Motor Based on DSP-FPGA

作　　者：刘川 唐涛 王娜[2] 冯加旭 LIU Chuan;TANG Tao;WANG Na;FENG Jia-xu(Chengdu Yunda Technology Co.,Ltd,Chengdu 611731,China)

机构地区：[1]成都运达科技股份有限公司,四川成都611731 [2]西南交通大学,电气工程学院,四川成都610031

出　　处：《电力电子技术》2021年第4期16-19,25,共5页Power Electronics

摘　　要：永磁同步电机(PMSM)由于其高功率密度、高可靠性的优点,在轨道交通领域得到广泛关注。在此首先对内嵌式永磁同步电机(IPMSM)的数学模型进行分析,在此基础上针对IPMSM直、交轴电感分量不相等的特殊结构,为充分利用磁阻转矩,提高系统的效率,采用最大转矩电流比(MTPA)控制算法。其次,为拓宽PMSM的调速范围,在基速以上时采用弱磁增速控制算法,同时为在较低的开关频率下获得优良的电流谐波性能,采用空间矢量脉宽调制(SVPWM)与特定次谐波消除脉宽调制(SHEPWM)结合的多模式调制算法。最后,设计搭建了以TMS320C6748型DSP及SPARTAN6型FPGA为核心的控制器,并结合RT-LAB半实物实验平台,验证理论分析的正确性和有效性。Permanent magnet synchronous motors(PMSM) are potentially used in the field of rail transit and due to theirs high power density and high reliability.Firstly,the mathematical model of the interior permanent magnet synchronous motor(IPMSM) is analyzed.Based on this,for the special structure of the IPMSM whose direct and quadrature axis inductance components are not equal,in order to make full use of torque to improve the efficiency of the system,the maximum torque current ratio(MTPA) control algorithm is used.Secondly,in order to widen the speed regulation range of PMSM,the flux weakening speed increasing control algorithm is adopted when the base speed is above the base speed,and the multi-mode modulation algorithm combining space vector pulse width modulation(SVPWM)with specific harmonic elimination pulse width modulation(SHEPWM) is adopted to obtain excellent current harmonic performance at lower switching frequency.Finally,a hardware-in-loop experiment is adopted on the DSP TMS320 C6748 and FPGA SPARTAN6 controller and RT-LAB experimental platform.Experimental results verify the effectiveness and correctness of theoretical analysis.

关 键 词：内嵌式永磁同步电机 最大转矩电流比 弱磁控制 

分 类 号：TM341[电气工程—电机]