专利名称：AC motor control apparatus
发明人：Takashi Suzuki,Takeshi Itoh,Hirofumi Kako申请号：US13867392申请日：20130422公开号：US09154071B2公开日：20151006
专利附图：
摘要：A control apparatus includes an electric current estimation unit to improve aresponsiveness of an AC motor. The electric current estimation unit performs, atpredetermined intervals, a dq conversion, a correction process, and an inverted dqconversion. The dq conversion calculates d/q axis electric current estimate values based
on a detection value of a sensor phase from a sensor, and on an electric current estimatevalues of two phases of the AC motor other than the sensor phase from a previous cycle.The correction process corrects, during the dq conversion, the d/q axis electric currentestimate values in an orthogonal direction that is orthogonal to a sensor phase axis. Theinverted dq conversion calculates the electric current estimate values of the two phasesother than the sensor phase based on the d/q axis electric current estimate valuescorrected by the correction process and smoothed by a low-pass filter process.
申请人：DENSO CORPORATION
地址：Kariya, Aichi-pref. JP
国籍：JP
代理机构：Nixon & Vanderhye PC
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