Title :
Three-degree-freedom Internal Model Control and its application for adjusting speed drive system of synchronous machine
Author :
Yuanshen, Zhou ; Xirong, Zhu
Author_Institution :
Dept. of Electron. Eng., Huaihai Inst. of Technol., Lianyungang, China
Abstract :
A conventional two-degree-freedom (2DOF) internal model control (IMC) cannot be applied to solve the contradiction of the load disturbance rejection performance and robustness. In order to overcome the shortcomings of it, this paper presents the three-degree-freedom (3DOF) IMC method, the input, feedforward and feedback controllers are applied respectively to regulate the output tracking, the load disturbance rejection performance and robustness of the system. The 3DOF-IMC is applied in the speed drive system of synchronous machine(SM), the air-gap-flux & rotor speed controllers are proposed. The characteristics of 3DOF-IMC have been verified by computer simulation. Simulation results show that the output tracking, outer disturbance regulation and robustness performance of SM are regulated respectively by using controllers based on 3DOF-IMC; the proposed controllers provide very good dynamic response performances.
Keywords :
digital simulation; drives; dynamic response; feedback; feedforward; load regulation; robust control; rotors; synchronous machines; velocity control; 3DOF IMC; SM; air-gap-flux controller; computer simulation; dynamic response; feedback controller; feedforward controller; load disturbance rejection performance; robust control; rotor speed controller; speed drive system; synchronous machine; three-degree-freedom internal model control; Adaptive control; Computational modeling; Computer simulation; Control systems; Drives; Electronic mail; Robust control; Samarium; Synchronous machines; Adjusting Speed Drive System; Synchronous Machine(SM); Three-Degree-freedom Internal Model Control (3DOF-IMC);
Conference_Titel :
Control and Decision Conference, 2009. CCDC '09. Chinese
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-2722-2
Electronic_ISBN :
978-1-4244-2723-9
DOI :
10.1109/CCDC.2009.5192812
