Research in pulse width modulated HVDC transmission

The advances of high power, high frequency, solid-state switches with gate 'turn-off' capability (GTO's) are reaching a level when it is justified to initiate research and development in the PWM generation of HVDC. The authors present results based on a 1 kVA experimental PWM converter and digital simulations, which show that: the PWM HVDC system is technically realizable, the MVA ratings can be raised for bulk power transmission, and the performance improvement is sufficiently significant as to justify further investments in research and development.<
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