Single-phase alternating-current four-switch Buck-Boost bidirectional converter
By introducing a four-switch Buck-Boost bidirectional converter into a single-phase AC rectifier converter and controlling the connection between the switch tube and the inductor in different working modes, the problems of complex circuits and low efficiency in the prior art are solved, and efficient voltage conversion and device utilization are achieved.
CN120566908APending Publication Date: 2025-08-29NEIJIANG LINGHUI ELECTRONIC TECH CO LTD
View PDF 0 Cites 0 Cited by
Patent Information
- Application Number
- CN202510504710.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2025-08-29
AI Technical Summary
Technical Problem
When existing single-phase AC rectifier converters operate within a wide range below and above the input voltage, there are problems such as complex circuit control, low device utilization and low efficiency.
Method used
A single-phase AC four-switch Buck-Boost bidirectional converter is adopted. By introducing a Buck-Boost conversion circuit into the input circuit, and controlling the connection method between the switch tube and the inductor in different working modes, it can realize synchronous current control and reduce losses.
Benefits of technology
It realizes high-efficiency voltage conversion over a wide range, improves device utilization and circuit efficiency, and simplifies control logic.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN120566908A_ABST
Abstract
The invention discloses a single-phase alternating-current four-switch Buck-Boost bidirectional converter, which comprises two Buck-Boost conversion branches respectively connected with alternating current, each branch comprises a switch tube and an inductor, the branch comprises an input switch tube QL1 connected with an alternating-current input end Ac, a converter inductor L connected with the QL1 and a switch tube QL2, the other end of the inductor L is connected with QR1 and QR2, the other ends of the QL2 and QR2 are connected to a negative electrode, and the other ends of the QR1 and QR2 are connected to a positive electrode. The other end of the QR1 is connected with the positive electrode. The output voltage range is wide and can be higher than or lower than the input voltage, the input current can be controlled according to sine waves, and the power factor of the power supply is improved. By optimizing and simplifying inversion control, the circuit is more stable, the converter is simple to control, the device utilization rate is high, the efficiency is high, and the application prospect is wide.
Need to check novelty before this filing date? Find Prior Art