DC magnetization suppression in power converter transformers

Details DC magnetization suppression in power converter transformers DC magnetization suppression in power converter transformers

1997-08-07

1999-02-02

Sterrett, Jeffrey

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363 95, 363132, 363136, H02M 748

Patent

active

058673768

ABSTRACT:
A power converting apparatus includes a power converter connected to a power line via a transformer 3, and current detectors 5A and 5B for detecting the currents of the windings of the transformer. The output signals of the current detectors 5A and 5B are mathematically processed to produce an exciting current component of a transformer 3. The exciting current component is mathematically processed to produce a flux density contained DC component. Further, the flux density contained DC component and a flux density contained DC component command value are mathematically processed to produce a voltage command correction value.

REFERENCES:
patent: 4439822 (1984-03-01), Cocconi
patent: 4803611 (1989-02-01), Sashida et al.
patent: 5012400 (1991-04-01), Yasuda
patent: 5177428 (1993-01-01), Hirose et al.
patent: 5450310 (1995-09-01), Kawakami

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