alexa Effects of Varying Load on DC- Link Voltage in DFIG Based Wind Energy Conversion System
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
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Research Article

Effects of Varying Load on DC- Link Voltage in DFIG Based Wind Energy Conversion System

Rakesh Sharma1, Kuldeep Sahay2, Sateyndra Singh3
  1. M.Tech. (Student), Uttar Pradesh Technical University, Lucknow, Uttar Pradesh, India
  2. Professor, Dept. of EE, Institute of Engineering & Technology, Lucknow, Uttar Pradesh, India
  3. Assistant professor, Dept. of EE, Institute of Engineering & Technology, Lucknow, Uttar Pradesh, India
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Abstract

The wind energy sources are characterized by irregularity and unpredictability. It is very important to make DC-link voltage constant for doubly fed induction generator wind energy conversion system. The DC-link provides an extra spinning reserve facility for the wind system, which can be used for sink or source of active power. This paper presents the DC-link voltage fluctuation for a back to back pulse width modulation converter in doubly fed induction generator for wind turbine systems. The effects of load variation on DC link electrolytic capacitor voltage of DFIG based wind energy conversion system (WECS).As DFIG based WECS utilize low power converter, so there is a need to explore the effects of DC-link voltage. For this there are two cases (i) At fixed speed effect of load variation on dc link voltage Vdc (ii) At variable speed effect of load variation on dc link voltage Vdc. These cases are compared with healthy fixed and variable DFIG wind energy conversion system. All these scenarios have been simulated with the help of the simulation program using MATLAB and its inbuilt components provided in SIMULINK library

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