| 摘要 |
A single-phase inverter and a three-phase inverter are disclosed. The single-phase inverter includes a first inverting topology unit, a second inverting topology unit, a first direct-current voltage boost circuit, a second direct-current voltage boost circuit, a first diode, a second diode, a third diode, and a fourth diode, where: the first inverting topology unit is connected between a positive output end of a direct-current power supply and a negative output end of the direct-current power supply; the second inverting topology unit is connected between a cathode of the third diode and an anode of the fourth diode; and a middle point of the first inverting topology unit is connected to a middle point of the second inverting topology unit, and serves as an alternating-current output end of the single-phase inverter. When the direct-current power supply outputs a high voltage, the first inverting topology unit and the second inverting topology unit work in a parallel structure. The parallel structure reduces a conduction loss of a switching transistor by decreasing a current flowing through the switching transistor, thereby reducing a heat loss of the inverter is reduced and further improving the working efficiency of the inverter. |
