基于Matlab的雙饋調速系統研究

摘要：本文介紹了異步電機雙饋調速的原理，并用Matlab構建出雙饋調速系統模型。其中轉子繞組用交-交變頻器供電。文中指出了Matlab仿真庫中的異步電機模型與變頻器連接時存在不匹配的問題并提出相應的辦法取得了較好的效果。用該模型對一實例進行了仿真，仿真結果與實際運行情況非常吻合，驗證了模型的正確性。該系統模型對于研究此類雙饋變頻調速系統有一定的參考價值。 敘詞：變頻器、聯接匹配、雙饋調速 Abstract：The principle of double-fed motor speed regulation is introduced, and a simulation model is built with Matlab software. In the simulation the motor model in Simulink can not be connected directly to the cycloconverter model. This problem is solved by adding an ideal transformer model between them. The system model is used to simulate the real case. The simulation result agrees with the real one and the correctness of this system model is verified. So there are some values for studying similar questions. Keyword：cycloconverter; model matching; double-fed speed regulation