Control scheme providing a freewheeling period in a...

Details Control scheme providing a freewheeling period in a... Control scheme providing a freewheeling period in a...

2006-08-29

2009-10-06

Sterrett, Jeffrey L (Department: 4126)

Electric power conversion systems

Frequency conversion without intermediate conversion to d.c.

By semiconductor converter

C363S157000, C363S163000

Reexamination Certificate

active

07599204

ABSTRACT:
A method includes controlling the cyclo-converter7in coordination with controlling a coupled HF inverter3. The controlling of the cyclo-converter7provides at least a first freewheeling FW period in the cyclo-converter for each cycle of the HF inverter3. The controlling of the HF inverter provides a freewheeling period in the HF inverter3each time the first freewheeling period is provided in the cyclo-converter.

REFERENCES:
patent: 5189603 (1993-02-01), Sashida et al.
patent: 5285365 (1994-02-01), Yamato et al.
patent: 2006/0062034 (2006-03-01), Mazumder et al.
Nge C.L. et al; Modified Natural Commutated Switching Technique for HF Link Inverter; Power Electronics and Applications, 2005 European Conference on; 7 pp.

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