内置式永磁同步电机新的弱磁控制策略研究  

A New Weak Magnetic Control Strategy for Build-in Permanent Magnet Synchronous Motor

作　　者：刘勇[1] 余仕求[1] 梁致远 

机构地区：[1]长江大学电子信息学院,湖北荆州434023 [2]上海泰科工控,上海200122

出　　处：《长江大学学报（自然科学版）》2018年第1期27-32,共6页Journal of Yangtze University(Natural Science Edition)

摘　　要：为了提高内置式永磁同步电机在ARM-cortex系列STM32单片机矢量控制中速度环控制算法程序的可执行性和简洁性,在"转矩及磁链控制器"(FOC矢量控制)中实时地提供目标交轴电流iq和目标直轴电流id,避免永磁同步电机参数对控制的影响。在实现新的闭环弱磁控制方案的基础上,在MTPA(最大转矩电流比)算法软件中提出了一种线性插值的解决方法:在程序中对MTPA控制算法中i*d和i*q执行线性插值。马达的速度从零到基速时运行在MTPA区域,高于基速时,MTPA控制就由弱磁控制代替。通过软件和硬件实现了闭环的弱磁控制方案,改善了内置式永磁同步电机(IPMSM)调速系统的控制性能和执行策略,并通过试验证明了所提出方法的可靠性和有效性。To obtain the performance and simplicity of permanent magnet synchronous motor of the vector control of STM32 microcontroller single resistor sampling method,the target q-axis current iq and direct-axis current id are provided in torque and flux controllers(FOC is the vector control)to avoid the influence of the parameters of synchronous motor on the control.On the basis of a new loop and weak magnetic control scheme,a linear interpolation solving method is proposed in the software of MTPA(maximum torque current ratio)algorithm,that is to establish a table in the program:i_d*=f(i_q*),by which a linear interpolation is carried out in the program.When a motor runs from zero to base speed in MTPA area,and it is over the base speed,MTPA control is replaced by a weak magnetic control.The weak loop magnetic control scheme is implemented by software and hardware,in this way the accurate parameters of the motor should not be understood.The method improves the control performance of speed variation system and its implementation strategy,the test data indicate that the method in the study is reliable and effective.

关 键 词：弱磁控制 内置式永磁同步电机 STM32 矢量控制 线性插值 

分 类 号：TM351[电气工程—电机]