Development Of PCC IGBT Excitation System

After the characteristics and development of excitation system of synchronous generators are analyzed, micro-computer regulating theory of excitation system is discussed, this dissertation presents a scheme of designing excitation system with Programmable Computer Controller (PCC) and IGBT, and PCC IGBT excitation system of turbine generator is also developed according to the above mentioned.Firstly, hardware structure, software system and the realization of their functions all are detailed in this dissertation. Then, such jobs as design of IGBT securing and drive unit, design of main loop, hardware and software of PCC regulator, are fulfilled. At the end of this dissertation, PCC IGBT excitation system is tested in the laboratory. The results of test suggest that the PCC IGBT excitation system is fit for turbine generators and its dynamic and static qualities attain or surpass the quality prescribed in related national standard.The PCC IGBT excitation system has simple operating theory, excellent control ability, strong stability and reliability. All of these make it greatly significant for improving stability of power system with wide market foreground, it will a bright future in the medium-sized and small-sized hydropower station.