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DC motor thyristor rectifier - has protection against thyristor turn-off overloads with quenching thyristors turning on alternately
DC motor thyristor rectifier - has protection against thyristor turn-off overloads with quenching thyristors turning on alternately
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机译:直流电动机可控硅整流器-具有可控硅关断过载保护功能,淬火可控硅交替开启
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摘要
The thyristor rectifier, for d.c. motors, is protected against overload voltages resulting from its thyristor turning off or being quenched. The a.c. supply is obtained from a transformer whose secondary is connected at one end to the junction between two series-coupled diodes bridging the load and at the other end over an inductor to the junction between two series-coupled main thyristors also bridging the load. The main thyristors are bridged by two series-coupled quenching thyristors in the same conduction direction as the main thyristors. The anode/cathode junctions between the two thyristors in each pair are connected together over the quenching capacitor. A quenching thyristor is turned on when the capacitor voltage exceeds the supply voltage.
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