A phase-locked loop circuit for a power supply system
By designing a phase-locked loop circuit, the phase difference problem during AC power switching is solved, ensuring the safety of the load equipment and improving the stability and inverter efficiency of the power system.
CN224537851UActive Publication Date: 2026-07-21BEIYU ELECTRIC (WUHAN) CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIYU ELECTRIC (WUHAN) CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
In scenarios where multiple AC power sources are used, the load equipment may be damaged due to phase difference and phase angle issues during AC power switching.
Method used
A phase-locked loop circuit is used to ensure no phase difference when switching AC power through a rectifier module, a DC-AC module and output terminals. The AC power that is not involved in operation is isolated by a power switch. The DC bus voltage is regulated by a DC-DC module and a surge protector is installed to protect the equipment from interference.
Benefits of technology
It achieves phase synchronization of load devices during AC power switching, avoids circulating current and power oscillation, protects equipment from damage, and improves inverter efficiency and electromagnetic compatibility.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224537851U_ABST
Abstract
The utility model relates to a kind of phase-locked loop of power supply system, and power supply system includes multiple ac power supply;Phase-locked loop includes rectifier module, DC-AC module and output terminal, the number of input of rectifier module is equal to the number of ac power supply, the input of rectifier module is electrically connected to the output terminal of ac power supply one by one, the input of DC-AC module is electrically connected to the output terminal of rectifier module, the input of output terminal is electrically connected to the output terminal of DC-AC module.This application is switched by multiple ac power supply and supplies power, DC-AC module carries out phase-locked state, ensure that there is no phase difference phase angle problem when load equipment is automatically switched.
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