The application of a diode bridge rectifier unit connected to a generator feeding a sending-end HVDC station shows a substantial reduction in the station cost. One of the major problems of this configuration is its slow recovery from a DC line fault. The authors propose and analyze a few types of control and protection schemes for the generator. The minimum time required to restore full power subsequent to a DC line fault is studied for each scheme. The results of a digital computer study are presented, as are some results obtained from a real-time physical component HVDC simulator.>
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Hungsasutra et al. (1989) studied this question.