MOTOR CONTROL DEVICE

专利名称：MOTOR CONTROL DEVICE发明人：Sari MAEKAWA申请号：US13238346申请日：20110921

公开号：US20120074888A1公开日：20120329

专利附图：

摘要：A motor control device includes an inverter circuit including a plurality ofswitching elements connected into a three-phase bridge configuration and converting adirect current into a three-phase alternate current, a current detecting elementconnected to a direct current side of the inverter circuit, thereby generating a signal

corresponding to a current value, a PWM signal generating unit which determines a rotorposition based on phase currents of the motor and generates a three-phase PWM signalpattern so that the signal pattern follows the rotor position, and a current detecting unitdetecting phase currents based on the signal generated by the current detectingelement and the PWM signal pattern. The PWM signal generating unit generates thethree-phase PWM signal pattern so that the current detecting unit is capable ofdetecting two phase currents in synchronization with advent of two fixed time-pointswithin a carrier period of the PWM signal respectively.

申请人：Sari MAEKAWA

地址：Yokohama JP

国籍：JP

更多信息请下载全文后查看