发明授权
- 专利标题: Inverter apparatus
- 专利标题(中): 变频器
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申请号: US10573858申请日: 2003-09-30
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公开(公告)号: US07436144B2公开(公告)日: 2008-10-14
- 发明人: Manabu Yoshimura , Toshiyuki Kaitani
- 申请人: Manabu Yoshimura , Toshiyuki Kaitani
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 国际申请: PCT/JP03/12497 WO 20030930
- 国际公布: WO2005/034327 WO 20050414
- 主分类号: G05B11/28
- IPC分类号: G05B11/28
摘要:
A CPU calculates, based on a frequency command value for driving a motor and on a state quantity of the motor, an output-voltage command value in which only the phase advances while amplitude is constant in each calculation period, without reducing the calculation period. An ASIC reflects the output-voltage command value in a triangular wave signal in a time-series order to compare with each other, and outputs a PWM signal to a switching circuit. Thus, a waveform of an output voltage is made close to a sine wave irrespective of an output frequency being high or low, and a processing load of the CPU is reduced.
公开/授权文献
- US20060239047A1 Inverter apparatus 公开/授权日:2006-10-26