Modular PM generator/converter topologies, suitable for utility interface of wind/micro turbine and flywheel type electromechanical energy conversion systems

In this paper, modular PM generator and converter topologies, suitable for the utility interface of wind turbine, micro turbine and flywheel type electromechanical energy conversion systems are explored. It is shown that winding connections of the standard PM generator in the above applications can be reconnected into several single-phase and three-phase groups, each powering a separate PWM rectifier, resulting in high performance electromechanical energy conversion systems. The proposed approaches are fault tolerant and can continue to function at reduced power levels under faults. An example 3-phase, 10 hp, 4 pole, 60 Hz, 230 V/460 V PM motor/generator winding connection diagram along with the associated converter configurations is fully analyzed for the above listed applications