Overload protecting circuit for an inverter device

Details Overload protecting circuit for an inverter device Overload protecting circuit for an inverter device

1984-11-21

1986-12-09

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Voltage regulator protective circuits

318806, H02H 326

Patent

active

046283951

ABSTRACT:
The inverter device for performing a.c.-d.c.-a.c. conversion has a power discrimination circuit for discriminating whether a power source is of a single phase or three phases. As a result of discrimination, a suitable overload protecting circuit provided in the device is selected or a reference level for overcurrent is changed to thereby protect structural elements such as a converter, a smoothing capacitor etc. from breakage caused by overcurrent.

REFERENCES:
patent: 3716718 (1973-02-01), Nowell
patent: 3881147 (1975-05-01), Ueda et al.
patent: 3930193 (1975-12-01), Kornrumpf et al.
patent: 3999087 (1976-12-01), Compton
patent: 4060841 (1977-11-01), Allen
patent: 4084205 (1978-04-01), Bohnert
patent: 4545464 (1985-10-01), Nomura

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