MPPT Control of Grid Connected PMSG Wind Turbines
Keywords:
Variable speed wind energy conversion system (VS-WECS), Permanent Magnet Synchronous Generator (PMSG), Perturbation and Observation Algorithm, Maximum Power Point Tracking (MPPT)Abstract
Over the last years, with technological
advancements wind power has grown rapidly and becomes the most
competitive form of renewable energy especially for VS-WECS as
compared to fixed velocity system. Most of system does not capture
power at every wind speed, especially low wind speed. To achieve
this outcome at variable speed wind energy conversion system (VSWECS) here Permanent magnet Synchronous Generator (PMSG) is
used which eliminates gear box. A simple Maximum Power Point
Tracking (MPPT) control Scheme is used for PMSG with diode
bridge rectifier and grid side inverter. The Power Conversion are
Performed at unity power factor and DC link voltage is maintained
constant. An Algorithm named Perturbation and Observation is
developed at MPPT for maintaining constant voltage at output side
in spite of variation in wind speed. Modeling and simulation of the
grid side of the wind turbine system are performed. Results are
verified through the MATLAB simulations.
