Power Generation System for Wind Turbines Based on Novel Multizone Converters

A novel configurations of multizone current source converters are proposed in this paper for wind turbine power generation system using permanent magnet synchronous generator. The system consists of permanent magnet synchronous generator, diode rectifier in couple with buck converter or alternative multizone current source rectifier, and a pulse-width-modulated multizone current source inverter. Current source converter topologies with natural advantages in terms of quality of generated voltage in the entire range of regulation, controllable power factor, and reliable grid short-circuit protection is considered to be a promising power converter configurations for use in medium voltage high-power permanent magnet synchronous generator based wind turbine power generation systems. In this regard, two topologies of multizone current source inverters for medium-voltage wind turbine power generation system were proposed, investigated and analyzed in this paper. The advantages and disadvantages of these topologies are illustrated. The comparison was performed on the basis of analysis and simulation results in terms of grid-side voltage THD, grid power factor, DC current ripple factor, control characteristic and external characteristic. Also, reverse voltages of power semiconductor switches were analyzed.