变流器的控制方法、控制系统、变流器及风力发电机组
By optimizing the converter control method and utilizing the midpoint level switching strategy to disperse thermal stress near the synchronous speed of the doubly fed wind turbine, the problem of overheating of power devices was solved, resulting in higher reliability and power generation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GOLDWIND SCI & TECH CO LTD
- Filing Date
- 2024-12-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing converter control schemes cannot effectively solve the problem of excessive thermal stress on power devices near the synchronous speed of doubly-fed wind turbines, resulting in power generation loss.
By optimizing the converter control method and modulating the switching state of the three-level bridge arm, and using the midpoint level switching strategy, when the rotor speed is close to the synchronous speed, the outer tube is turned off and the clamping tube and inner tube are turned on to disperse thermal stress and avoid overheating of individual power devices.
Without reducing power generation, the heat distribution of the switching transistors is evenly distributed, which solves the problem of excessive thermal stress in power devices and improves the reliability and power generation efficiency of the converter.
Smart Images
Figure CN119628448B_ABST