Abstract

In the wind energy conservation system, the wind turbine captures the wind energy. Then the generator changes it to the electrical power. Wind turbines are classified into two types as fixed speed wind turbine and variable speed wind turbine. Variable speed wind turbines yield more energy than the fixed speed wind turbines, reduce power fluctuations. This paper presents the model and control schemes of a variable speed wind turbine with permanent magnet synchronous generator. This model includes a PMSG model, a wind turbine model, a drive train model, three phase diode rectifier, dc to dc boost converter and three phase diode clamped inverter. The power conversion system topology is explained and electrical model of each component is presented. Based on this electrical model, a simulation model of system has done. The simulation was implemented in power system simulation tools in MATLAB SIMULINK. Keywords: diode clamped multilevel inverter, PMSG, renewable energy, variable speed wind turbine, wind energy conversion system

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