నైరూప్య

Single Phase Grid Connected Wind Power Using Chopper Based Pi Controller

Sivamurugan.R, Dhayalini.K, Sathyamoorthy.S

This paper presents a system in which a wind driven Permanent Magnet DC Generator (PMDC) feeds power to grid through a Buck-Boost converter. The output voltage of the PMDC is variable in nature due to non-uniform wind velocities. The fluctuating output is regulated and kept constant by means of a buck-boost converter. The buck-boost converter is provided with a closed loop feedback control, which is designed using a PID controller. In this converter, the output voltage is continuously sensed and duty ratio of the switch is varied to maintain a constant DC output voltage. This converter output is stored in a battery and converted to single phase ac using a diode clamped multilevel inverter. The power converters together with independent control systems can effectively improve the output voltage and frequency of the wind driven PMDC generator feeding power to grid. The proposed system is validated through 24V PMDC machine.

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