一种六开关交流功率双向低开关纹波输出电路拓扑
By using a six-switch AC power bidirectional low-switching ripple output circuit, and utilizing a common-zero line structure and switch multiplexing, the problems of complex component selection and high cost in existing bidirectional power converters are solved, achieving low switching loss and high-efficiency power conversion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- STATE GRID QINGHAI ELECTRIC POWER COMPANY
- Filing Date
- 2022-12-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing bidirectional power converter topologies have problems such as high requirements for device selection and filter design, large number of devices, complex drive circuits, and high cost. They are particularly difficult to meet power quality and power loss requirements in high-frequency and high-power-density applications.
A six-switch AC power bidirectional low-switching ripple output circuit is adopted. Through coupling inductors, coupling capacitors, filter capacitors and power bidirectional six-switch chopper circuit, a three-bridge parallel circuit with a common neutral line structure is formed. By utilizing the commonality of switch multiplexing and power frequency voltage, the number of power switches is reduced and the switching ripple current is reduced. And through capacitor charging and discharging and circuit state switching, bidirectional AC/DC/AC power control is achieved.
While maintaining the same system capacity, the number of power switches and system cost were reduced, power loss was reduced, and switching ripple current was reduced, achieving low switching loss and high efficiency power conversion.
Smart Images
Figure CN115733346B_ABST