POLYPHASE MULTIPLEX CHOPPER

摘要

PURPOSE:To equilibrate currents flowing through switch means of phases of polyphase multiplex chopper by detecting a power source current by sole current detecting means. CONSTITUTION:Current detecting means 400 detects a power source current at the prescribed timing. Calculating means 600 calculate phase currents flowing through switch means TR1-TR3 on the basis of the output of the means 400 and a load current of the sum of the phase currents, and calculate the unbalance among the phase currents. On time control means 700 output a signal for turning ON the switch means by the calculated result of the means 600, and controls the ON time of the switch means.