微特电机 ›› 2022, Vol. 50 ›› Issue (9): 1-6.

• 专题讲座 •    下一篇

自寻优最大转矩电流比矢量控制连载之一:同步电动机动态寻优MTPA控制技术综述

沈建新1,2, 张雨馨1, 王云冲1,3, 史丹1   

  1. 1.浙江大学 电气工程学院,杭州 310027;
    2.流体动力与机电系统国家重点实验室,杭州 310027;
    3.浙江省电机系统智能控制与变流技术重点实验室,杭州 310027
  • 收稿日期:2022-07-22 出版日期:2022-09-28 发布日期:2022-10-09
  • 通讯作者: 王云冲(1987—),男,副教授,博士生导师,研究方向为永磁电机设计与控制技术。
  • 作者简介:沈建新(1969—),男,教授,博士生导师,研究方向为电机拓扑与驱动控制。张雨馨(1998—),女,硕士研究生,研究方向为同步磁阻电机自寻优矢量控制技术。史丹(1986—),女,博士后,研究方向为高速永磁电机设计与优化。
  • 基金资助:
    浙江省尖兵领雁计划项目(2022C01001,2022C01097);国家自然科学基金项目(52007161,51837010);国家重点实验室基金项目(6142212200306)

Self-Optimizing MTPA Vector Control Part 1: A Review of Dynamic MTPA Control for Synchronous Motor

SHEN Jianxin1,2, ZHANG Yuxin1, WANG Yunchong1,3, SHI Dan1   

  1. 1. College of Electrical Engineering, Zhejiang University,Hangzhou 310027, China;
    2. State Key Laboratory of Fluid Power and Mechatronic Systems,Hangzhou 310027, China;
    3. Zhejiang Provincial Key Laboratory of Electrical Machine Systems,Hangzhou 310027, China
  • Received:2022-07-22 Online:2022-09-28 Published:2022-10-09

摘要: 最大转矩电流比(MTPA)控制在给定转矩下实现电流最小化,可以有效减小铜耗,提升电机效率。传统的公式法根据同步电机数学模型推得满足MTPA的电流矢量相位角解析解,难以计及电机参数非线性变化的特性,存在固有误差。为实现高精度MTPA控制,将电机参数非线性变化纳入考量。系统介绍了考虑参数非线性变化的多种MTPA控制方法的工作原理,从控制性能、算法复杂程度、计算量等方面归纳总结了不同方法的优劣。

关键词: 同步电机, 最大转矩电流比控制, 参数非线性变化特性, 离线查表法, 在线参数辨识法, 在线搜索法

Abstract: Maximum torque per ampere (MTPA) control minimizes the current amplitude under a given torque, which can reduce copper loss and improve motor efficiency.The analytical solution of the MTPA current phase angle, which is derived from the mathematical model of a synchronous motor, usually ignores the characteristics of the nonlinear variation of motor parameters and therefore has inherent errors. In order to achieve accurate MTPA control, the nonlinear variation of the motor parameters needs to be taken into account.The working principles of various MTPA control methods which consider the parameter nonlinear variations were introduced,and the advantages and disadvantages of different methods were summarized in terms of control performance, algorithm complexity and workload.

Key words: synchronous motor, maximum torque per ampere (MTPA) control, parameter nonlinearity and variation, offline look-up table, online parameter identification method, online search method

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