A Power Maximization Controller for PMSG Wind Energy Conversion Systems
نویسندگان
چکیده
A new maximum power extraction (MPE) controller for variable speed permanent magnet synchronous generator (PMSG) wind energy conversion systems (WECS) is proposed. The proposed controller generates optimum speed reference signal for the speed control loop of the vector controlled machine side converter control system without requiring the knowledge of wind speed using only active power and air density as its inputs. The generator is operated in the speed control mode with reference speed modified dynamically in accordance with the magnitude and direction of change of active power. The control algorithm takes into account the changes in system efficiency during its operation at various operating points due to the change in wind speed. The proposed method is validated experimentally in a variable speed direct drive PMSG WECS using a wind turbine emulator. Experimental results show good performance of the proposed controller. KeywordsMaximum Power Extraction Controller; Permanent Magnet Synchronous Generator; Wind Speed Sensorless; Wind Energy Conversion Systems
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