Overcurrent protective device for switching element

Details Overcurrent protective device for switching element Overcurrent protective device for switching element

2006-06-01

2008-11-25

Patel, Rajnikant B (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S056030, C363S037000

Reexamination Certificate

active

07457136

ABSTRACT:
An overcurrent protective device has a current detecting section and a control section. The current detecting section detects the amount of a current flowing through switching elements of an inverter device. The control section determines whether the inverter device is held in a first state or a second state in correspondence with an input from the current detecting section. When it is determined that the inverter device is held in the first state, the control section performs a flywheel operation. When it is determined that the inverter device is held in the second state, the control section performs a regenerative operation. Accordingly, the overcurrent protective device prevents generation of whine when performing overcurrent protective operation.

REFERENCES:
patent: 4947309 (1990-08-01), Jonsson
patent: 05-137392 (1993-06-01), None
patent: 2002-354659 (2002-12-01), None

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