Commutation circuits for thyristor inverters
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United States of America Patent
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Sep 20, 1983
Grant Date -
N/A
app pub date -
Aug 26, 1981
filing date -
Sep 25, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The commutation circuit for commutating a conducting thyristor includes an inductance, a capacitance and a commutation thyristor all connected in series with the conducting thyristor and the dc source, the commutation thyristor initiates the commutation when triggered. The circuit further includes a first diode connected in reverse polarity across the commutation thyristor and a second diode connected in reverse polarity across the commutation thyristor-capacitance series circuit. The voltage across the capacitance is zero when each commutation cycle is initiated, and also when each commutation cycle ends.
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