防爆电机
防爆電機
방폭전궤
EXPLOSION-PROOF ELECTRIC MACHINE
2015年
4期
31-35
,共5页
开关磁阻电机%电磁振动%径向磁密%傅里叶分解%瞬态结构耦合
開關磁阻電機%電磁振動%徑嚮磁密%傅裏葉分解%瞬態結構耦閤
개관자조전궤%전자진동%경향자밀%부리협분해%순태결구우합
SRM%electromagnetic vibration%radial flux density%Fourier decomposition%transient coupling structure
开关磁阻电机的电磁噪声来源于电磁振动，通过改变电机定转子结构，从而改变定转子气隙磁密，减小气隙中的径向磁密，同时减小径向电磁力与转矩脉动，达到抑制电磁振动的目的，减小了开关磁阻电机振动，并通过傅里叶分解径向磁密观察径向磁密谐波含量，分析定子振动。通过Ansoft求得电磁力密度加载到Ansys Workbench瞬态结构中定子上，观察定子结构应力变化。得到了新定子、转子结构能有效的改善电机的振动情况。
開關磁阻電機的電磁譟聲來源于電磁振動，通過改變電機定轉子結構，從而改變定轉子氣隙磁密，減小氣隙中的徑嚮磁密，同時減小徑嚮電磁力與轉矩脈動，達到抑製電磁振動的目的，減小瞭開關磁阻電機振動，併通過傅裏葉分解徑嚮磁密觀察徑嚮磁密諧波含量，分析定子振動。通過Ansoft求得電磁力密度加載到Ansys Workbench瞬態結構中定子上，觀察定子結構應力變化。得到瞭新定子、轉子結構能有效的改善電機的振動情況。
개관자조전궤적전자조성래원우전자진동，통과개변전궤정전자결구，종이개변정전자기극자밀，감소기극중적경향자밀，동시감소경향전자력여전구맥동，체도억제전자진동적목적，감소료개관자조전궤진동，병통과부리협분해경향자밀관찰경향자밀해파함량，분석정자진동。통과Ansoft구득전자력밀도가재도Ansys Workbench순태결구중정자상，관찰정자결구응력변화。득도료신정자、전자결구능유효적개선전궤적진동정황。
The electromagnetic noise of switched reluctance motor ( SRM) is caused by e-lectromagnetic vibration. Through changing the structures of stator and rotor and then changing air-gap flux density of them, radial air-gap flux density is reduced, at the same time radial elec-tromagnetic force and torque ripple are reduced. The purpose of suppressing electromagnetic vi-bration is achieved, so the vibration of SRM is reduced. The radial flux density is decomposed by Fourier transformation to observe harmonic content of it and analyze stator vibration. Finally, the electromagnetic force density solved by Ansoft is loaded into Ansys workbench transient structure of stator to observe stress variation of stator structure. It is found that the vibration of SRM is effectively improved by using new stator and rotor structures.
