发明名称 CONTROLLING METHOD OF ELECTRIC RAILCAR CONTROLLER
摘要 PURPOSE:To enable to stably control an electric railcar without producing a vibrating current of a main circuit by setting a slip frequency to the prescribed minimum value except zero and the modulation factor to zero or the prescribed minimum value near zero at the idle operation controlling time. CONSTITUTION:A current command value calculator 23 outputs a current command value IC in response to a movement command MC, a variable load signal VL and a power drive command P or a brake command B, and a reference slip frequency calculator 25 outputs a reference slip frequency fSO in response to the current command value Ic through the minimum value limiter 27. A modulation factor calculator 31 calculates a filter capacitor voltage EC and a modulation factor (gamma) from an inverter frequency (f). A modulation factor selector 41 outputs normally the modulation factor (gamma) and the minimum modulation factor min at the slip operation time through a modulation factor variable limiter 43. A PWM modulator 32 controls the inverter in accordance with the frequency (f) and the modulation factor (gamma).
申请公布号 JPS609302(A) 申请公布日期 1985.01.18
申请号 JP19830115099 申请日期 1983.06.28
申请人 TOSHIBA KK 发明人 YASUOKA IKUO
分类号 B60L9/18;B60L15/28;H02P5/74;H02P23/08;H02P27/08 主分类号 B60L9/18
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