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US 2014/0177308 A1Published application
Electrical power conversion device
AssigneePanasonic Corporation
InventorTatsuo MORITA
Life of this patent
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Abstract
A normally-off bidirectional switch having two gates is connected to a transformer. The transformer has a first winding and a second winding. A first gate bias power supply configured to use power generated at the first winding to supply power for driving one of the gates of the bidirectional switch and a second gate bias power supply configured to use power generated at the second winding to supply power for driving the other gate of the bidirectional switch are provided.
Claims8
A power conversion device comprising:
- a transformer;
- a first normally-off bidirectional switch including two gates and connected to the transformer;
- a first controller configured to control the first normally-off bidirectional switch;
- and
- a gate power supply circuit configured to generate power to be supplied from an AC power supply to the gates of the first normally-off bidirectional switch.
2 more elements
Dependencies are inferred from the claim text.