摘要
对柔性直流输电系统中的电压源换流器VSC的拓扑结构进行了介绍，分析了VSC换流器的PWM控制原理及其稳态数学模型，基于PID控制原理设计了相应的控制器，实现了系统有功功率和无功功率的调节。基于PSCAD／EMTDC的数字仿真验证了所设计的控制器具有很好的控制性能，对于故障情况能有很快的响应且稳定性良好。
The elementary structure and operation principle of the VSC are introduced. Detailed analysis of the PWM control principle and the steady-state mathematical model. And a steady-state controller design scheme based on the PID control principle is also proposed, Realized the regulation of active and reactive power. Digital simulation based on PSCAD/EMTDC shows that the designed controller has good control performance,the simulation results show that the method have good control ability,quick response to breakdown and good stability.
出处
《电源技术应用》
2013年第8期32-37,42,共7页
Power Supply Technologles and Applications
