Patent ID: 11894765
Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 15:
16. The power conversion device of claim 14, wherein the multi-level power factor correction circuit comprises a inductor, a first bridge arm, and a second bridge arm; the first bridge arm and the second bridge arm are parallel to the first output terminal and the second output terminal of the multi-level power factor correction circuit, the first bridge arm comprises a first switching device and a second switching device; the first switching device and the second switching device are connected to a midpoint of the first bridge arm in series; the second bridge arm comprises a first switch, a second switch, a third switch, a fourth switch, a first clamp switch, and a second clamp switch;
wherein the first switch and the second switch are connected to each other in series, and connected at a first node, the second switch and the third switch are connected to each other in series, and connected at the midpoint of the second bridge arm, and the third switch and the fourth switch are connected to each other in series, and connected at a second node; a first end of the first clamp switch is connected to the first node, a second end of the first clamp switch is connected to a first end of the second clamp switch and a junction node of the first output capacitor and the second output capacitor in series, the second end of the second clamp switch is connected to the second node; the inductor is coupled between the midpoint of the second bridge arm and the midpoint of the first bridge arm.