JPS6416265A - Controller for converter - Google Patents

Abstract

PURPOSE:To improve synchronizing performance, by a method wherein a means which determines events, necessary for the preparation of a control signal, and operates a time when the signal is to be supplied to schedule the signal sequentially, is provided in the title controller. CONSTITUTION:A power transducer is constituted of a three-phase AC power source 1, capacitors 2, 6, a current type converter unit 2, an AC reactor 4, a current type inverter unit 5 and the like and supplies an electric power to a load or an induction motor 7. The control circuit of the title controller is equipped with a comparator 9 and one-tip microcomputers 10, 11 while the micro-computer 10 is constituted of a ROM 103, a RAM 104, registers 107-109 for setting events or the like, an associative memory 110, an executive controller 113 and the like. Events, necessary for the preparation of control signals to be supplied to transistors 31-36, 51-66, are determined and the supplying time of the signals are operated, then, the control signals are scheduled sequentially. In this case, the intervals of the schedules are set so as to be shorter than the operating intervals of the supplying times.