| 摘要 |
A three-phase alternating converter for a tri-state switch unit comprises a filtering circuit, a power factor correction circuit, a star connecting circuit, and a capacitor. The star connecting circuit is located between the filtering circuit and the power factor correction circuit. An output end of the filter circuit is connected to an input end of the power factor correction circuit by using a wire. The star connecting circuit is disposed on the wire for connecting the filtering circuit and the power factor correction circuit. One end of the star connecting circuit is connected to the wire, the other end of the star connecting circuit is connected to one end of the capacitor, and the other end of the capacitor is connected to an input wire. By means of the converter, original three capacitors are reduced to one capacitor, so that the number of the used capacitors can be reduced, and further, the volume is reduced and the power density is improved. |
