Drive system for electric cars
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专利名称：Drive system for electric cars 发明人：Masahiro Hasebe,Shinichi Otake 申请号：US08/219168
申请日：19940328
公开号：US05528094A
公开日：
19960618
专利内容由知识产权出版社提供
摘要：A drive system comprises first and second motors for driving an electric car in response to alternating electric currents supplied to their coils. The first and second motors have their respective first and second rotors assembled on a common shaft at angular positions which are shifted by a first predetermined angle in their direction of rotation. Moreover, the first and second motors are energized by currents which are shifted in phase by a second predetermined angle. The first and second predetermined angles are individually determined in advance on the basis of the undesirable torque-fluctuation harmonic and the polar ratio of the motor. As a result, the torque fluctuations of the selected harmonic of the motor frequency of the first and second motors can offset each other to reduce the vibrations due to resonances.
申请人：AISIN AW CO., LTD.
代理机构：Lorusso & Loud
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