发明名称 |
AC POWER SUPPLY UNIT FOR REGENERATING MAGNETIC ENERGY |
摘要 |
The present invention relates to an alternating-current power supply device which can improve a power factor of an alternating-current load, realizes low cost and miniaturization, and recovers magnetic energy. The alternating-current power supply device includes a bridge circuit composed of four reverse conducting semiconductor switches, a capacitor that is connected between direct-current terminals of the bridge circuit and absorbs the magnetic energy at the time of cutting off the current, an alternating-current voltage source that is connected to the induction load in series and is inserted between alternating-current terminals of the bridge circuit, and a control circuit that gives a control signal to gates of the respective reverse conducting semiconductor switches and controls on/off states of the respective reverse conducting semiconductor switches. The control circuit simultaneously controls the on/off operation of the paired reverse conducting semiconductor switches positioned on a diagonal line of the four reverse conducting semiconductor switches composing the bridge circuit, makes a control so that when one pair of the two pairs is ON, the other pair is OFF, and switches the control signal in synchronization with a voltage of the alternating-current voltage source. |
申请公布号 |
EP1768242(A1) |
申请公布日期 |
2007.03.28 |
申请号 |
EP20040732460 |
申请日期 |
2004.05.12 |
申请人 |
THE CIRCLE FOR THE PROMOTION OF SCIENCE AND ENGINEERING |
发明人 |
SHIMADA, RYUICHI;SUMITANI, HIDEO;TAKAKU, TAKU;ISOBE, TAKANORI |
分类号 |
H02M5/293;H02M1/00;H02M1/42 |
主分类号 |
H02M5/293 |
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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