Voltage and Frequency Regulation in Wind Farm using Novel Boost Converter and MLI

摘要

WECS is dependent only on flow of wind. Regarding environmental conditions wind does not have constant speed and unpredictable. The generated output power is fluctuation in nature during low wind speed. Speed of the wind turbine increases with increase in speed of the wind up to a certain range. Since generator is placed on the same shaft at which wind turbine is placed. Therefore, change in the wind speed is directly affected the output generated by the generator. So it is important to control this power fluctuation by maintaining the voltage as well as frequency constant. In this paper DC-DC boost converter is used to maintain voltage at certain point with PMSG. PMSG is used here because of its inherit property. Although the PMSG is costly than IM but the total cost involved in generated the same amount of power using PMSG is less than IM. The AC output is converted into DC using rectifier and then it is fed to the boost converter to maintain the desired value of voltage. Again this DC voltage is converted into AC voltage by the use of inverter and then fed to the grid.