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Patent Searching and Data


Title:
POWER CONVERSION DEVICE AND DC-POWER/AC-POWER CONVERSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/137630
Kind Code:
A1
Abstract:
The voltage waveform and current waveform of the AC power to be outputted are controlled by: varying the period of time an ON signal of a gate-control signal, which makes an inverse-electrical-connection semiconductor switch constituting a magnetic-energy regeneration switch turn ON/OFF, is to be continued, within a range of time equal to or more than the minimum time necessary for a capacitor (C) to discharge and the voltage between both ends of the capacitor (C) becomes approximately zero (V); and varying the switching frequency of the ON/OFF of the inverse-electrical-connection semiconductor switch, within a range equal to or less than the resonant frequency that is decided by the capacitance of the capacitor and the inductance of the resonant inductor (5). Furthermore, the obtainable electric power can be increased, by having a DC current supply that supplies electric power to a power conversion device, connected via a diode.

Inventors:
SHIMADA RYUICHI (JP)
Application Number:
PCT/JP2010/058938
Publication Date:
December 02, 2010
Filing Date:
May 26, 2010
Export Citation:
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Assignee:
MERSTECH INC (JP)
SHIMADA RYUICHI (JP)
International Classes:
H02M7/48
Foreign References:
JP2008092745A2008-04-17
JP2008193817A2008-08-21
Attorney, Agent or Firm:
KIMURA MITSURU (JP)
Mitsuru Kimura (JP)
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