一种新型最大转矩电流比控制实现方法  

A New Method to Realize Maximum Torque per Ampere Control

作　　者：薛海芬 XUE Haifen(Siemens Electrical Drives(Shanghai)Co.,Ltd.,Shanghai 200137,China)

机构地区：[1]西门子(上海)电气传动设备有限公司,上海200137

出　　处：《电气传动》2020年第6期124-128,共5页Electric Drive

摘　　要：采用最大转矩电流比控制方案可以使电机输出转矩不变的同时,实现定子铜耗最小、提高电机运动效率的目的。永磁同步电机分为凸极机(内置式永磁电机)和隐极机(表贴式永磁电机),此处以凸极机为例进行介绍。传统的永磁同步电机最大转矩电流比控制方案中,电流和转矩关系推导繁琐,工程实现复杂。从新的角度推导出最大转矩电流比条件下d,q轴电流与转矩的数学关系,并介绍了利用PI调节器来解方程组的方法,求得的解分别作为d,q轴的电流给定。最后通过用C语言编写的控制代码加Matlab/Simulink仿真的方式验证了所述方案,并对比了采用和不采用此方案时的电机铜耗大小,仿真证明此方案是可行的且易于工程实现。The maximum torque per ampere(MTPA)control strategy can decrease the stator loss and improve the efficiency of electric machinery.PMSM can be divided into IPMSM(interior permanent magnet synchronous motor)and SPMSM(surface mounted permanent magnet synchronous motor).A new method of realizing MTPA based on IPMSM was introduced.It was complicated and not easy to implement when using traditional way to derive the relationship between stator current and torque to realize MTPA scheme.The relationship of d,qaxis current and torque was derived from a different point of view when using MTPA strategy.A closed loop with PI regulator was introduced to solve the equations set.The solving results were used as the current reference signal of current loop.The proposed method was verified and tested through Matlab/Simulink simulation in which the control was realized by calling C souring code.The rotor loss results of adopting and not adopting this scheme were compared.The simulation result proves that this scheme is feasible and easy to implement.

关 键 词：最大转矩电流比 内置式永磁同步电机 比例积分调节器 

分 类 号：TM351[电气工程—电机]