Dynamic Modeling and Control of TL Power Amplifier Using Controlled Source
The accurate closed-loop system model of Three-Level (TL) power amplifier for magnetic bearing was presented. The TL power amplifier was a nonlinear system and uncertain math model would affect the stability analysis of power amplifier. Based on the controlled source method, the nonlinear devices were replaced by controlled voltage source or controlled current source. The models of left half bridge and right half bridge were deduced. The four modes with TL control strategy were analyzed and the closed-loop system model of TL power amplifier was obtained. Simulation and experimental results were basically the same and confirmed the validity of the proposed model. The results show that the deduced model can better reflect the actual control characteristics of TL power amplifier.
Power amplifier Controlled source Modeling Magnetic bearing
Jun Wang Longxiang Xu
College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
国际会议
2009年中国控制与决策会议(2009 Chinese Control and Decision Conference)
广西桂林
英文
2146-2150
2009-06-17（万方平台首次上网日期，不代表论文的发表时间）