发明名称 |
Direct current magnetic polarization component compensation circuit for constant voltage/frequency power supply apparatus |
摘要 |
The present invention is directed to supply an AC (alternating current) output having a constant voltage and a constant frequency to a load such as computers. A constant voltage/frequency power supply apparatus is provided which comprises at least a constant voltage/frequency output circuit including a converter, connected between an AC power source and the load, for DC-converting the AC output of this power source, and an inverter for AC-inverting the DC-converted output, a control circuit for controlling the inverter of the output circuit, and further a correction means for deleting as a DC magnetic polarization amount a DC component contained in the AC output of the output circuit, and for deleting a DC magnetic polarization amount from the AC output supplied to the load, based upon the detected DC magnetic polarization amount, whereby a sine wave AC output having a constant voltage/frequency which is not adversely influenced by the DC magnetic polarization is supplied to the load.
|
申请公布号 |
US4739464(A) |
申请公布日期 |
1988.04.19 |
申请号 |
US19860920363 |
申请日期 |
1986.10.20 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
NISHIHIRO, AKINORI;HANAKA, IKUTARO;KAJITA, TAKEYOSHI |
分类号 |
H02M7/48;H02M7/5387;(IPC1-7):H02M5/458 |
主分类号 |
H02M7/48 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|