Modelling and simulation analysis of static drive for large synchronous machine

Synchronous machines have many excellent features. Starting problem has made its use limited in nature. But by virtue of modern static drives it is being used in a widespread manner. One large rating synchronous machine and its drive system are taken as study object in this paper. This machine is installed at a laboratory of Central Power Research Institute, India. It can be operated in dual mode i.e. as a motor or as a generator. In motor mode it attains its rated speed. In generator mode its output is utilised to perform short circuit tests on electrical power equipment. Starting, running and braking of this machine are done with a static drive called Static Frequency Converter (SFC). Detailed analysis of this static drive is done in this paper by creating a virtual model of the system.…