Core Loss Effect Modeling and Compensation for Improved MTPA Control of PMSM Drive under High-speed Conditions

作     者：Yuting Lu Beichen Ding Kaide Huang Guodong Feng Yuting Lu;Beichen Ding;Kaide Huang;Guodong Feng

作者机构：IEEE School of Intelligent Systems EngineeringSun Yat-sen UniversityShenzhenChina School of Advanced ManufacturingSun Yat-sen UniversityShenzhenChina School of Mathematics and Big DataFoshan UniversityFoshanChina 

出 版 物：《CES Transactions on Electrical Machines and Systems》 (中国电工技术学会电机与系统学报（英文）)

年 卷 期：2024年第8卷第4期

页      面：436-446页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0835[工学-软件工程] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by in part by the National Natural Science Foundation of China(62473387,52105079,62103455) the Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)(SML2023SP241) 

主　　题：Permanent magnet synchronous machine Core loss Magnetic saturation Maximum torque per ampere(MTPA) 

摘      要：For permanent magnet synchronous machines(PMSMs),accurate machine model is critical for high performance maximum torque per ampere(MTPA)***,as motor speed increases,the nonlinearity such as core loss effect will affect the accuracy of machine model and thus the performance of online MTPA *** paper firstly investigates the performance of the model based MTPA control under different motor speeds through modeling,simulation and experiments,which indicates that the accuracy of MTPA control is greatly reduced especially under high-speeds due to machine ***,this paper proposes an efficient nonlinearity compensation model based on polynomial fitting to model and compensate the MTPA error as motor speed *** both core loss and magnetic saturation effects,the compensation model is a nonlinear polynomial of speed and stator *** obtain the fitting data,a derivative modeling method is proposed to compute the actual and detected MTPA angles under different speeds,in which the derivative model of torque to current ratio is fitted and the MTPA angle is obtained by setting the derivative model to *** proposed compensation model is both computation effective and easy to use for MTPA control,as it computes the compensation term that can be directly combined to other model-based *** proposed model is evaluated with experiments and comparisons on a test motor to show the performance improvement.