Patent ID: 9647569
Date: 2017-05-09
CPC Classifications: H02M

Claim:
1. A matrix convertor comprising: a power convertor comprising a plurality of bidirectional switches disposed between a plurality of input phases and a plurality of output phases; and a controller configured to generate a control command based on connection ratios of the plurality of input phases and control the power convertor based on the control command, the control command comprising a switching pattern that causes a first input phase among the plurality of input phases to be connected to one output phase among the plurality of output phases and that causes connection of the plurality of input phases to be switched between a rest of the plurality of output phases, the controller being configured to, in generating the control command, set a lower limit to a period of time during which a second input phase among the plurality of input phases that corresponds to an intermediate voltage is connected to the rest of the plurality of output phases, wherein the controller includes a changer configured to change the switching pattern and an adder configured to, when the changer changes the switching pattern, add the connection ratio of the second input phase to at least one of a beginning and an end of the switching pattern.