发明授权
US08384335B2 Motor driving apparatus having DC link voltage regulating function
有权
具有直流母线电压调节功能的电机驱动装置
- 专利标题： Motor driving apparatus having DC link voltage regulating function
- 专利标题（中）： 具有直流母线电压调节功能的电机驱动装置
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申请号： US13208553申请日： 2011-08-12
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公开(公告)号： US08384335B2公开(公告)日： 2013-02-26
- 发明人: Wataru Kuroki , Takashi Harada , Shinichi Horikoshi , Yasusuke Iwashita
- 申请人： Wataru Kuroki , Takashi Harada , Shinichi Horikoshi , Yasusuke Iwashita
- 申请人地址： JP Minamitsuru-gun, Yamanashi
- 专利权人： FANUC Corporation
- 当前专利权人： FANUC Corporation
- 当前专利权人地址： JP Minamitsuru-gun, Yamanashi
- 代理机构： Drinker Biddle & Reath LLP
- 优先权： JP2010-197925 20100903
- 主分类号： H02P27/04
- IPC分类号： H02P27/04
摘要：
A motor driving apparatus comprises: an AC/DC converter which converts AC voltage supplied from an AC power source into DC voltage through PWM switching control of a power switching device; and a DC/AC converter which converts the DC voltage into variable-frequency AC voltage for driving a motor in a controlled manner. The AC/DC converter includes: a control unit which generates, based on an error between the DC voltage and a DC voltage command value, a PWM signal for the PWM switching control of the power switching device; and a frequency/gain varying unit which sets the frequency of the PWM signal to be generated by the control unit and a control gain in the control unit higher than their normal levels during a period in which a load in the DC/AC converter varies.
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