发明名称 |
CONTROL CIRCUIT FOR INVERTER |
摘要 |
PURPOSE:To enable to always preferably operate an inverter at the power interruption time or a switching time in the optimum manner by starting the reduction in the voltage after the remaining magnetic flux of a motor decreases to the prescribed value or lower. CONSTITUTION:A remaining magnetic flux detector 7 detects the remaining magnetic flux from the remaining voltage waveform of the motor outputted from a rectifier 4 and the output fM of a frequency converter 5, and outputs an inverter operation allowance signal ST after the remaining magnetic flux level decreases to the prescribed level or lower. A resetter 8 receives an inverter operation command signal Ip and the output signal ST or the detector 7 and outputs an initial reset signal after both signals are high. The inverter 1 starts the reclosing operation on the basis of the reset signal. |
申请公布号 |
JPS6084991(A) |
申请公布日期 |
1985.05.14 |
申请号 |
JP19830182208 |
申请日期 |
1983.09.30 |
申请人 |
MITSUBISHI DENKI KK |
发明人 |
KATSUTOU MASAYUKI;IWASAKI MASAHIKO;TADA HIDEAKI |
分类号 |
H02P27/06;H02M7/48;H02P27/08 |
主分类号 |
H02P27/06 |
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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