Integration of synchronous machine drive system for variable speed operation

Based on the novel rotor speed control, the complete AC/DC/AC synchronous machine drive system is integrated. It consists of AC grid, rectifier, inverter and synchronous machine with its excitation system. All power components as well as complete control system are modeled. The sequences of machine starting, voltage control and reactive power control are then accomplished. Short circuit studies are also provided; one with IGBTand the other with thyristor-based rectifier. Despite the system complexity, all control functions are successfully fulfilled.