MULTILEVEL INVERTER DEVICE

摘要

A multilevel inverter device comprises: a series circuit of a first switching element 21 and a second switching element 22 connected between a terminal at a high voltage side and a terminal at a low voltage side of a DC electric power supply 2; a series circuit of two capacitors 11 and 12, which is connected in parallel with the first switching element 21 and the second switching element 22, to generate an intermediate voltage of the DC electric power supply 2; and a single bidirectional switching element 100 connected between a connection point P1 of the two capacitors 11 and 12 and a connection point P2 of the first switching element 21 and the second switching element 22; and wherein the bidirectional switching element 100 has a horizontal transistor structure using GaN/AlGaN.

主权项

1. A multilevel inverter device comprising:
a series circuit of a first switching element and a second switching element connected between a terminal at a high voltage side and a terminal at a low voltage side of a DC electric power supply; a series circuit of two capacitors, which is connected in parallel with the first switching element and the second switching element, to generate a middle voltage of the DC electric power supply; a single bidirectional switching element connected between a connection point of the two capacitors and a connection point of the first switching element and the second switching element; and a control unit to output gate driving signals to the first switching element, the second switching element and the bidirectional switching element, and wherein the bidirectional switching element has a horizontal transistor structure using GaN/AlGaN.