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专利名称：Ac motor controlling apparatus发明人：Takafumi Tsurumi,Naoki Ohsawa,Hajime
Kondou,Yasumichi Ohnuki
申请号：US08/9030申请日：19970730公开号：US05834910A公开日：19981110
摘要：An AC motor controlling apparatus which can exactly control the torque of anAC motor throughout a motor rotating speed range from low to high.
A control mode selecting circuit 13 actuates a switching circuit 19 for allowing anexciting circuit 12 to receive a PWM signal S11 from a current feedback circuit 11 whenthe rotating speed Nm of the motor 1 is in a higher range, and a PWM signal from anAND gate 14 when it is in a lower range. A power feedback circuit 10 performs a feedbackcontrol for matching the power supplied to an inverter circuit 6 to a target power. Thecurrent feedback circuit 11 performs a feedback control for matching the phase currentsto a target currents.
申请人：HONDA GIKEN KOGYO KABUSHIKI KAISHA
代理机构：Nikaido, Marmelstein, Murray & Oram LLP
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