Invention Grant
- Patent Title: Motor drive device
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Application No.: US14894545Application Date: 2014-05-28
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Publication No.: US09755565B2Publication Date: 2017-09-05
- Inventor: Koji Sakai
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya, Aichi-pref.
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya, Aichi-pref.
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2013-117042 20130603
- International Application: PCT/JP2014/002810 WO 20140528
- International Announcement: WO2014/196162 WO 20141211
- Main IPC: H02P1/04
- IPC: H02P1/04 ; H02P6/12 ; H02P27/08
Abstract:
When a control device determines, based on a sampling number in one period of a target modulation factor waveform, that the sampling number is less than a predetermined value in a case where a two-phase modulation scheme is selected and the target rotation number increases, the control device switches a modulation scheme from the two-phase modulation scheme to a three-phase modulation scheme.
Public/Granted literature
- US20160105138A1 MOTOR DRIVE DEVICE Public/Granted day:2016-04-14
Information query
