Power conditioner

摘要

A power conditioner that suppresses distortion in a waveform of a sinusoidal generated voltage includes a first and second group including two switches each connected in inverse parallel and in series. The power conditioner alternately turns on and off both switches in the first group at a prescribed chopping frequency and alternately turns on and off both switches in the second group at a PWM frequency higher than the chopping frequency. If control is performed with a dead-time provided in the on/off timing for both switches in each group, the power conditioner adjusts and controls the on/off duty for the second group switches to correspond to the effective on drive in one switch by each diode during the dead-time for each switch in the first group.

主权项

1. A power conditioner comprising:
a first switch circuit including a pair of switches connected in series with each other, a diode being connected in inverse parallel with each of the switches, the switches configured to be alternately turned on and off at a predetermined chopping frequency; a second switch circuit including a pair of switches connected in series with each other, a diode being connected in inverse parallel with each of the switches of the second switch circuit, the switches of the second switch circuit configured to be alternately turned on and off at a PWM frequency higher than the chopping frequency; and a controller processor configured to perform on/off control of each of the switches of the first and second switch circuits while a dead-time is provided, wherein the controller processor is configured to adjust and control on/off duty of the switches in the second switch circuit according to an effective on drive in one of the switches using each diode during the dead-times of the switches of the first switch circuit.