发明名称 |
DRIVE SYSTEM OF SYNCHRONOUS MOTOR |
摘要 |
A drive system of a permanent magnet motor is constituted of a mode switching trigger generator which monitors a state of a permanent magnet motor and issues a mode switching trigger, a conduction mode determining unit which receives the mode switching trigger and switches the mode of the permanent magnet motor, and a PWM generator which outputs a PWM signal to an inverter in accordance with the output of the conduction mode determining unit. The mode switching trigger is generated on condition that the speed electromotive force of the permanent magnet motor exceeds a constant or variable threshold value.
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申请公布号 |
US2009200971(A1) |
申请公布日期 |
2009.08.13 |
申请号 |
US20090367036 |
申请日期 |
2009.02.06 |
申请人 |
IWAJI YOSHITAKA;KOKAMI YASUHIKO;KUROSAWA MINORU |
发明人 |
IWAJI YOSHITAKA;KOKAMI YASUHIKO;KUROSAWA MINORU |
分类号 |
H02P6/20;H02P6/18 |
主分类号 |
H02P6/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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