| 摘要 |
PROBLEM TO BE SOLVED: To reduce harmonic components contained in alternating input currents, without increasing the switching frequency of a PWM power conversion device. SOLUTION: The power conversion device is provided with an active current controller (8), that calculates phase angle reference values from the deviation of input active currents from an active current reference value, to determine the on/off phase relative to the phase of alternating-current supply voltage; and a fixed pulse pattern generator (11) that generates switching signals of a fixed pulse pattern with the fundamental frequency thereof, being synchronized with an alternating-current power supply frequency, based on the phase angle reference values calculated by the active current controller (8) to control a self-excited voltage-type power converter (3). |
