MATRIX CONVERTER

摘要

A matrix converter includes a power converter and a controller. The power converter includes bidirectional switches each having a controllable conducting direction. The bidirectional switches are disposed between input terminals and output terminals. The input terminals are respectively coupled to phases of an AC power source. The output terminals are respectively coupled to phases of a load. The controller controls the bidirectional switches. A first commutation controller performs commutation control when the conducting direction is unidirectional. A second commutation controller performs the commutation control when the conducting direction is bidirectional. A selector selects between the first commutation controller and the second commutation controller to perform the commutation control based on a state of an output current from the power converter.

主权项

1. A matrix converter comprising:
a power converter comprising a plurality of bidirectional switches each having a controllable conducting direction, the bidirectional switches being disposed between a plurality of input terminals and a plurality of output terminals, the plurality of input terminals being respectively coupled to phases of an AC power source, the plurality of output terminals being respectively coupled to phases of a load; and a controller configured to control the plurality of bidirectional switches, the controller comprising:
a first commutation controller configured to perform commutation control in a state where the conducting direction of the bidirectional switches is unidirectional;a second commutation controller configured to perform the commutation control in a state where the conducting direction of the bidirectional switches is bidirectional; anda selector configured to select between the first commutation controller and the second commutation controller to perform the commutation control based on a state of an output current from the power converter.