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专利名称：MOTOR CONTROL METHOD AND MOTOR
CONTROL APPARATUS
发明人：Rafael Herrejon MENDOZA申请号：US146678申请日：20150325
公开号：US20150288305A1公开日：20151008
专利附图：
摘要：A method of controlling a motor includes a) acquiring a rotational speedparameter; b) selecting either a three-phase modulation scheme and a two-phasemodulation scheme based on a result of comparing a rotational speed of the motor with
a predetermined reference speed; c) calculating phase voltage command values based ona target rotational speed and the rotational speed parameter; d) generating switchingsignals by using the selected modulation scheme based on the phase voltage commandvalues; and e) outputting the switching signals to an inverter. In step b), the two-phasemodulation scheme is selected when the rotational speed of the motor is higher than thereference speed to reduce switching loss is reduced and improve power efficiencywithout deteriorating starting characteristics and motor drive characteristics when therotational speed is low.
申请人：Nidec Corporation
地址：Kyoto JP
国籍：JP
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