CAJ | 학술논문

混合励磁磁通切换电机（flux-switching hybrid excitationmachine,FSHM）是一种新型定子励磁型交流无刷电机,具有磁链双极性、结构简单、功率密度高、运行可靠等优点。改变电励磁绕组电流的大小和方向,实现了对永磁气隙磁场的有效调节与控制,而引入导磁磁桥可提升气隙磁场调节范围。以建立电枢绕组磁链最大位置的等效磁路模型为切入点,推导了峰值磁通表达式,探索了磁桥段相对磁导率的估算方法,结合有限元仿真分析了磁桥厚度变化与磁桥式FSHM初始气隙磁密、磁桥磁密、气隙磁场调节能力、磁力线路径转移等特性的关系。样机的有限元仿真及实验结果与等效磁路模型预测趋势基本一致,验证了建模方法与理论分析的正确性,可用于指导磁通切换电机的设计与性能分析。
혼합려자자통절환전궤（flux-switching hybrid excitationmachine,FSHM）시일충신형정자려자형교류무쇄전궤,구유자련쌍겁성、결구간단、공솔밀도고、운행가고등우점。개변전려자요조전류적대소화방향,실현료대영자기극자장적유효조절여공제,이인입도자자교가제승기극자장조절범위。이건립전추요조자련최대위치적등효자로모형위절입점,추도료봉치자통표체식,탐색료자교단상대자도솔적고산방법,결합유한원방진분석료자교후도변화여자교식FSHM초시기극자밀、자교자밀、기극자장조절능력、자력선로경전이등특성적관계。양궤적유한원방진급실험결과여등효자로모형예측추세기본일치,험증료건모방법여이론분석적정학성,가용우지도자통절환전궤적설계여성능분석。
Flux-switching hybrid excitation machine（FSHM） was an interesting brushless machine with magnets in the stator,which offered the advantages of bipolar flux linkage,simple and robust rotor structure and high power density.Adjustment and control of the PM air gap magnetic field could be achieved by means of controlling the field winding current,and magnetic bridge amplified the effect of field flux on PM flux.This paper took equivalent magnetic circuit model（EMCM） of maximum phase flux-linkage position as point of penetration,deduced the equation of peak magnetic flux,and explored a method for estimating the relative permeability of magnetic bridge.The characteristic relation between the thickness of magnetic bridge and initial air gap flux density,magnetic bridge flux density,regulating capacity of air gap magnetic field,and magnetic lines transfer were studied combined with finite element analysis（FEA）.The estimation results based on EMCM agreed well with the FEA and experiment data,which confirmed the correctness of modeling method and theoretical analysis.It provided reference for FSHM design and performance analysis.