Power conversion device
OwnerHisanori Shibata, Hiroshi Mochikawainventors
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Abstract
Reflux diode 5u.about.5w and 5x.about.5z are in anti-parallel connected to MOSFET 4u.about.4w and 4x.about.4z. When MOSFET 4u.about.4w and 4x.about.4z are turned OFF, an electric current flows in a forward direction to reflux diode 5u.about.5w and 5x.about.5z. In the case of this construction, when for example reflux diode 5u disconnects, a small inverse voltage is applied from inverse voltage applied circuit 7 to reflux diode 5u. For this reason, as the inverse recovery of reflux diode 5u is produced by low voltage direct current power source 8 of inverse voltage applied circuit 7, loss occurring at reflux diode 5u is reduced.
Claims10
A power conversion device comprising:
- a pair of main circuit switching components supplying power to a load, connected in series to a direct current voltage source;
- a reflux diode anti-parallel connected to each of said main circuit switching components;
- and
- an inverse voltage applied circuit connected to each of said reflux diodes for applying an inverse voltage to each of said reflux diodes when each of said diodes disconnects.
Dependencies are inferred from the claim text.