Parallel operation system current sharing dynamic optimization method
By adopting the flow-event dynamic optimization method in the parallel system, the voltage droop loop output and phase control of the inverter module are adjusted in real time, which solves the circulation problem during parallel operation of the inverter and improves the stability and reliability of the system.
Patent Information
- Application Number
- CN202510009639.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2045-01-03
AI Technical Summary
When multiple inverters are running in parallel, they often face circulation problems, resulting in degradation of system output performance and frequent failures, and may cause serious damage to the entire system, affecting stable operation and overall performance.
By adopting a dynamic optimization method of current equalization in the parallel system, the host module summarizes the active power data of each slave module and issues an average active power value to the slave module. Each slave module adjusts the voltage sag loop output in real time based on the average active power value and its own active power data, and adjusts the phase with the voltage sag control loop of reactive power to achieve real-time control and current equalization of the output voltage.
It effectively improves the current equalization effect when the module is added to the system, reduces circulation problems, significantly improves the overall reliability of the system, and is suitable for large-scale promotion and application.