Electricity: motive power systems – Induction motor systems – With voltage source connected to motor secondary
Patent
1986-09-24
1988-08-23
Smith, Jr., David
Electricity: motive power systems
Induction motor systems
With voltage source connected to motor secondary
318798, 318806, H02P 540
Patent
active
047663600
ABSTRACT:
An induction generator/motor system has an induction machine connected at its secondary side to a cyclo-converter. An induced voltage develops when the cyclo-converter pauses during a transient phenomenon occurring in the system. When the induced voltage exceeds a predetermined voltage range which covers the maximum output voltage derivable from the cyclo-converter, the polarity of thyristor converters of the cyclo-converter is switched such that the induced voltage is applied to a thyristor converter to be rendered conductive next in forward relationship therewith, thereby preventing occurrence of an overvoltage.
REFERENCES:
patent: 3654541 (1972-04-01), Kelley, Jr. et al.
patent: 3942092 (1976-03-01), Bourbeau et al.
Bando Akira
Haraguchi Eiji
Kashiwazaki Hiroshi
Nakagawa Hiroto
Ono Ken'ichi
Hitachi , Ltd.
Smith Jr. David
The Kansai Electric Power Co.
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