交流励磁混合励磁电机的调磁稳压控制策略研究  

Control Strategy of Flux Regulation and Voltage Stabilization of AC-Excited Hybrid Excitation Generator

作　　者：刘凡 王凯[1] 李健 朱姝姝[1] 刘闯[1] LIU Fan;WANG Kai;LI Jian;ZHU Shushu;LIU Chuang(College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,Jiangsu Province,China)

机构地区：[1]南京航空航天大学自动化学院,江苏省南京市211106

出　　处：《中国电机工程学报》2022年第13期4955-4962,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51977109);江苏省杰出青年基金项目(BK20180016)。

摘　　要：交流励磁混合励磁同步发电机(hybrid excitation synchronous generator,HESG)的励磁绕组和转子分别采用交流励磁和交替极结构,实现了永磁磁通和电励磁磁通并联,降低了由电励磁磁通导致的永磁体不可逆退磁风险。由于混合励磁电机引入励磁绕组,其控制系统具有强耦合、多维度、多变量等特点,控制难度较大。该文研究交流励磁HESG负载和转速变化时稳压控制策略,首先建立电机数学模型,其次推导基于励磁绕组磁场定向控制时输出电压与励磁绕组电流的关系,分析交流励磁HESG不同运行状态下的稳压原理,并据此提出稳压控制策略。最后搭建发电实验平台,验证数学模型的准确性和控制策略的有效性。The excitation winding and rotor of AC-excited hybrid excitation synchronous generator(HESG)adopt AC excitation and consequent-pole structure respectively,which realizes the parallel connection of permanent magnet flux and electric excitation flux,and reduces the risk of irreversible demagnetization of permanent magnet caused by electric excitation flux.Due to the introduction of excitation winding in hybrid excitation motor,its control system has the characteristics of strong coupling,multi-dimensional and multi variable,which is difficult to control.This paper studied the control strategy of voltage stabilization of AC-excited HESG with the change of the load and speed.Firstly,the mathematical model of AC excited HESG was established.Moreover,based on field oriented control of excitation winding,the relationship between output voltage of motor and current of excitation winding was deduced.The voltage stabilization principle of AC excited HESG under different operating conditions was analyzed,and the voltage stabilization control strategy wa proposed.Finally,an experimental platform was built to verify the accuracy of the mathematical model and the effectiveness of the control strategy.

关 键 词：混合励磁同步电机 交流励磁 磁场定向控制 调磁稳压 空间矢量脉宽调制 

分 类 号：TM351[电气工程—电机]