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The auxiliary resonant commutated pole (ARCP), a new power converter topology that fully achieves soft switching without increasing primary device voltage or current ratings, is discussed. The ARCP converter is capable of true pulse-width modulation (PWM) control of each phase. The power circuit relies on the addition of an auxiliary triggered resonant commutation circuit or snubber to commutate the inductive load current from a main diode to an active device, allowing a zero voltage turn-off of the main devices. The auxiliary devices operate in a zero current soft switching mode, thereby requiring minimal current turn-off capability. The operation and control of the ARCP converter are discussed. Its performance is analyzed, and a simulation is presented. It is shown that the ARCP converter is capable of operation at elevated switching frequencies (10-30 kHz), high power levels (200-1000 kW), and high conversion efficiencies. the auxiliary devices will typically account for a 20% increase in the total silicon area of a three-phase power converter.>
Doncker et al. (Wed,) studied this question.
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