发明申请
- 专利标题: MOTOR CONTROL DEVICE AND AIR CONDITIONER
- 专利标题(中): 电机控制装置和空调
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申请号: US14633712申请日: 2015-02-27
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公开(公告)号: US20150256117A1公开(公告)日: 2015-09-10
- 发明人: Nobuyuki SUZUKI , Sari MAEKAWA
- 申请人: Kabushiki Kaisha Toshiba
- 申请人地址: JP Minato-ku
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Minato-ku
- 优先权: JP2014-043891 20140306
- 主分类号: H02P27/08
- IPC分类号: H02P27/08 ; F24F5/00
摘要:
A motor control device includes a PWM signal generation unit configured to increase/decrease a duty in both directions of phase lag side and phase lead side regarding a first phase of three-phase PWM signal pattern. The PWM signal generation unit is configured to increase/decrease a duty in one of the directions of phase lag side and phase lead side regarding a second phase. The PWM signal generation unit is configured to increase/decrease a duty in a direction opposite to that of the second phase with reference to any phase of the carrier-wave period regarding a third phase. A timing point adjusting unit is configured to detect two-phase currents at timing points fixed in the carrier-wave period and to adjust a detection timing point so that the current is detectable at a variable timing point regarding at least one phase when the two-phase currents become undetectable at the fixed timing points.
公开/授权文献
- US09287820B2 Motor control device and air conditioner 公开/授权日:2016-03-15
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