发明名称 |
Inverter circuit and compressor |
摘要 |
An inverter circuit includes a temperature measuring section for measuring a temperature of switching elements forming a powering section, a motor speed detector for detecting a speed of a motor, a carrier frequency determiner for determining a carrier frequency based on a temperature of the switching elements and a speed of the motor, and an output waveform determining circuit for determining a duty in response to a load applied to the motor and for switching a carrier frequency.
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申请公布号 |
US7400109(B2) |
申请公布日期 |
2008.07.15 |
申请号 |
US20050558508 |
申请日期 |
2005.04.12 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NOMURA SHINICHIRO;OGAHARA HIDEHARU;ENDO KATSUMI;TOKUNAGA SHIGETOMI |
分类号 |
H02P27/00;H02P6/00;H02P6/08;H02P29/02 |
主分类号 |
H02P27/00 |
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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