Resonant load power converter and time sharing operation method for resonant load power converter

摘要

PROBLEM TO BE SOLVED: To generate a kth-order harmonic switching pattern in a time-division operation in which the number of switching elements of a single-phase inverter is M and the number of parallel elements is N. SOLUTION: A half cycle of an output current frequency is used as a trigger, k clocks (k is an odd harmonic order of 3 or more) are output every half cycle, and a triangular wave signal generated by a triangular wave generation unit 119 is output by an inverter. A delay unit (120-1 to 120-11) for sequentially delaying each of the output currents by T×k)/2, a PWM command signal obtained from the difference in the number of clocks of the ON signal and the OFF signal of the gate command, and A comparator (121-1 to 121-12) for comparing a triangular wave signal and each delayed triangular wave signal is provided, and 2*N*M*k clocks are set as one cycle, and 2*N*(M-1) A switching element gate command signal that outputs an ON signal for a period of *k+1 clocks and outputs an OFF signal for a period of (2*N*M*k)-{2*N*(M-1)*k+1} clocks, respectively. To generate. [Selection diagram]