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US 2017/0288544 A1Published application
Chopper circuit
AssigneeFuji Electric Co., Ltd.
InventorMotoyoshi KUBOUCHI
Life of this patent
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Abstract
A chopper circuit includes a controller that performs control of turning on a second switching device when a short circuit detector detects a short circuit of a first diode, and performs control of turning on a first switching device when the short circuit detector detects a short circuit of a second diode.
Claims9
A chopper circuit comprising:
- a reactor;
- a direct-current output circuit;
- a capacitor circuit connected to a load;
- a first diode and a second diode each connected to the capacitor circuit;
- a first switching device connected in series to the first diode;
- a second switching device connected in series to the second diode;
- a short circuit detector that detects a short circuit of the first diode and a short circuit of the second diode;
- and
- a controller that performs control of turning on the second switching device when the short circuit detector detects the short circuit of the first diode, and performs control of turning on the first switching device when the short circuit detector detects the short circuit of the second diode.
6 more elements
Dependencies are inferred from the claim text.