2_hp_THREE_PHASEINDUCTION

Published:2009/7/7 3:59:00 Author:May | From:SeekIC

Speed is controlled by applying continuously variable DC voltage to VCO of control circuit for 750-VDC 7-A bridge inverter driving three sets of six Delco DTS-709 duolithic Darlingtons. Bridge inverter circuit for other two phases is identical to that shown for phase AA. VCO output is converted to three-phase frequency varying from 5 Hz at 50 VDC to 60 Hz at 600 VDC for driving output Darlingtons. Optoisolators are used for base drive of three switching elements connected to high-voltage side of inverter.- A 7A, 750 VDC Inverter for a 2 hp, 3 Phase, 480 VAC Induction Motor, Delco, Kokomo, IN, 1977, Application Note 60.



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