Free wheel diode arrangement for neutral point clamped electric

Details Free wheel diode arrangement for neutral point clamped electric Free wheel diode arrangement for neutral point clamped electric

1995-03-10

1997-06-10

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363137, 363 56, H02M 75387

Patent

active

056382669

ABSTRACT:
The invention is directed to a neutral point clamped electric power conversion apparatus having four semiconductor switching elements connected in series. The capacity of outer free wheel diodes connected in reverse parallel with outer semiconductor switching elements are increased compared to that of inner free wheel diodes, thereby minimizing, an imbalance in losses between the inner and the outer free wheel diodes.

REFERENCES:
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patent: 5274542 (1993-12-01), Tanaka et al.
patent: 5361196 (1994-11-01), Tanamachi et al.
patent: 5383108 (1995-01-01), Okayama et al.
patent: 5459655 (1995-10-01), Mori et al.

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