发明名称 |
DEVICE FOR CONTROLLING ELECTRIC MOTOR |
摘要 |
<p>First and second inverters are each controlled based on pulse width modulation using a carrier signal. In order to decrease the noise caused by the first inverter and the second inverter, a frequency (f1) of a carrier signal of the first inverter and a frequency (f2) of a carrier signal of the second inverter are controlled. The frequency (f1) of the carrier signal of the first inverter is changed periodically or randomly within a first preset frequency range (420) as time elapses. The frequency (f2) of the carrier signal of the second inverter is changed periodically or randomly within a second preset frequency range (430) to avoid overlapping the first frequency range (420).</p> |
申请公布号 |
EP2566040(A1) |
申请公布日期 |
2013.03.06 |
申请号 |
EP20100850706 |
申请日期 |
2010.04.28 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
KIKUNAGA, ATSUSHI;HATTORI, HIROYUKI |
分类号 |
H02P5/46 |
主分类号 |
H02P5/46 |
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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