发明名称 ELECTRIC POWER TOOL
摘要 An electric power tool includes: a brushless motor having a plurality of stator windings and configured to rotate in accordance with voltages applied to the plurality of stator windings, an induced voltage being generated in accordance with a rotation of the brushless motor; a rectifier circuit configured to rectify an AC voltage; a smoothing capacitor configured to smooth the AC voltage rectified by the rectifier circuit to a pulsation voltage having a maximum value larger than the induced voltage and a minimum value smaller than the induced voltage; and an inverter circuit configured to perform switching operations to output the pulsation voltage to the plurality of stator windings by rotation.
申请公布号 EP2686951(A2) 申请公布日期 2014.01.22
申请号 EP20120716675 申请日期 2012.03.19
申请人 HITACHI KOKI CO., LTD. 发明人 IWATA, KAZUTAKA;KOIZUMI, TOSHIAKI
分类号 H02P6/14 主分类号 H02P6/14
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