Patent ID: 8848410

Claim:
A matrix converter comprising: a plurality of input terminals; a plurality of output terminals; a power conversion circuit including bidirectional switches, each of the bidirectional switches including antiparallel connection circuits that are serially connected to each other, each of the antiparallel connection circuits including a unidirectional switching element and a diode, and the bidirectional switches being arranged between the input terminals and the corresponding output terminal; and a snubber circuit connected to the bidirectional switches, the snubber circuit comprising: a plurality of first diodes that respectively correspond to the bidirectional switches, a first connecting point of each of the first diodes being connected to a point of connection between the two unidirectional switching elements constituting the bidirectional switch; a capacitor whose first connecting point is connected to a second connecting point of each of the first diodes; a second diode whose first connecting point is connected to a second connecting point of the capacitor and second connecting point is connected to the corresponding output terminal; and a plurality of third diodes that respectively correspond to the bidirectional switches, a first connecting point of each of the third diodes being connected to the second connecting point of the capacitor, a second connecting point of each of the third diodes being connected to the corresponding input terminal, wherein the bidirectional switches connected between at least one of the output terminals and each of the input terminals, the first diodes connected to the respective bidirectional switches, and the second diode are arranged in one power module, and the power module is provided for the corresponding output terminal.