电机与控制学报
電機與控製學報
전궤여공제학보
ECTRIC MACHINES AND CONTROL
2014年
2期
15-20
,共6页
磁通切换%谐波特性%分块转子%电励磁
磁通切換%諧波特性%分塊轉子%電勵磁
자통절환%해파특성%분괴전자%전려자
flux-switching%harmonic characteristic%segmental-rotor%electrical excitation
针对不同转子齿数对电励磁分块转子磁通切换电机(ESFSM)的磁链和反电势谐波特性的重要影响,分析了电机磁通切换的工作原理,以三相定子12齿电机结构为例,从理论上对比研究了典型转子齿数(7和8)两种结构电机磁链和反电势的谐波分布特性。研究结果表明,12/7结构较12/8结构有无偶数次谐波的优点,采用有限元法提取了两种结构电机的磁链和反电势并进行傅里叶分析,分离出奇数次和偶数次谐波含量,验证了理论分析的准确性。研究结果为分块转子开关磁链电机转子齿数的设计提供了理论依据。
針對不同轉子齒數對電勵磁分塊轉子磁通切換電機(ESFSM)的磁鏈和反電勢諧波特性的重要影響,分析瞭電機磁通切換的工作原理,以三相定子12齒電機結構為例,從理論上對比研究瞭典型轉子齒數(7和8)兩種結構電機磁鏈和反電勢的諧波分佈特性。研究結果錶明,12/7結構較12/8結構有無偶數次諧波的優點,採用有限元法提取瞭兩種結構電機的磁鏈和反電勢併進行傅裏葉分析,分離齣奇數次和偶數次諧波含量,驗證瞭理論分析的準確性。研究結果為分塊轉子開關磁鏈電機轉子齒數的設計提供瞭理論依據。
침대불동전자치수대전려자분괴전자자통절환전궤(ESFSM)적자련화반전세해파특성적중요영향,분석료전궤자통절환적공작원리,이삼상정자12치전궤결구위례,종이론상대비연구료전형전자치수(7화8)량충결구전궤자련화반전세적해파분포특성。연구결과표명,12/7결구교12/8결구유무우수차해파적우점,채용유한원법제취료량충결구전궤적자련화반전세병진행부리협분석,분리출기수차화우수차해파함량,험증료이론분석적준학성。연구결과위분괴전자개관자련전궤전자치수적설계제공료이론의거。
As for electrical excitation segmented-rotor flux-switching machines, the rotor pole number has great influence on the harmonic characteristics of flux-linkage and back-EMF. Firstly, the flux-switching principle of electrical excitation segmented-rotor flux-switching machines( ESFSM) was analyzed. Be-sides, the harmonic characteristics of flux-linkage and back-EMF were comparatively studied in theory, on the 12-tooth ESFSM models with 7 and 8 rotor poles. The result shows that the flux-linkage and back-EMF of 12/7 ESFSMs contain no even harmonics, while 12/8 ESFSMs have both even and odd harmon-ics. Finally, the flux-linkage and back-EMF of the 12/7 and 12/8 machines were calculated by finite el-ement method. Basing on the fourier analysis of the flux-linkage and back-EMF,the even and odd har-monics percentage were calculated separately and the results verified the aforementioned theoretical analy-sis. The analysis results give the theoretical basis of the rotor pole number choice for ESFSM design.
