International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 10 | Oct 2024
p-ISSN: 2395-0072
www.irjet.net
STATOR CURRENTS AND ROTOR EQUIVALENT SOURCES MODELLING AND ANALYSIS OF DFIG IN WIND ENERGY SYSTEMS Barri Sravani1, Prof.T.R.Jyothsna2 1Electrical Engineering, PG scholar, Andhra University, kakaninagar, Visakhapatnam, India 2Electrical Engineering, Professor, Andhra University, Maddilapalem, Visakhapatnam, India
----------------------------------------------------------------------------***-------------------------------------------------------------------------ABSTRACT The Doubly-Fed Induction Generator (DFIG) plays a critical part in present day wind vitality frameworks due to its adaptability in variable-speed applications, tall proficiency, and capability to work beneath fluctuating wind conditions. In the show situation, DFIGs are broadly utilized in wind turbines since they permit autonomous control of dynamic and receptive control, upgrading framework steadiness and vitality productivity. The variable-speed operation empowered by the rotor-side converter too makes a difference moderate mechanical stresses on the turbine, progressing generally framework reliability. The Proportional-Integral (PI) control methodology for DFIGs, advertising a few focal points such as effortlessness, ease of usage, and vigorous execution beneath different working conditions. By controlling both stator and rotor-side voltages and streams, PI controllers proficiently oversee dynamic and receptive control stream, guaranteeing smooth network integration. The PI control approach gives steady energetic reaction, diminished motions, and improved framework execution, making it a well-known choice for both grid-connected and standalone DFIG applications. This investigates rotor and stator current flow for torque and control, giving experiences into how successful control can optimize control yield and make strides framework steadiness. By considering these cases, the proposed control strategy illustrates made strides execution in controlling electrical amounts, accomplishing craved control stream, and minimizing unsettling influences in real-world operational scenarios.
Keywords - Small Signal Stability, DFIG, WT, RSC, GSC I. INTRODUCTION Energy Conversion Systems(WECS): Overview of Wind Energy Conversion Systems(WECS): The system to convert the kinetic energy present in the wind to useful form of energy is known as Wind Energy Conversion System(WECS). In the history, the power in the wind was exercised to give useful mechanical power but in ultramodern world WECS is substantially concentrated on conversion of energy to electrical form. There are astronomically two types of WECS – vertical axis type and perpendicular axis type. Presently, vertical axis wind turbines are the most commercially feasible for bulk power generation operations. A WECS can be distinctly divided into three different corridor aerodynamic system, mechanical system and the electrical system as shown in figure below. 1) Aerodynamic system. The aerodynamics of the WECS system consists of wind turbine blades, turbine capitals and turbine rotor. The kinetic energy is converted into the mechanical energy in this system. likewise, utmost ultramodern wind turbine rotors are equipped with pitch servos, inside the mecca, that rotate the blades along their longitudinal axes to control the aerodynamic behavior of the blades. 2) Mechanical system. The mechanical energy attained from the kinetic energy is reused in this system. It consists of the drive- train made of a low- speed shaft coupled to the rotating mecca, a gear box (speed multiplier) that increases the low
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