An integrated Control Approach and Power Management of Stand-alone Hybrid Wind/PV/Battery Power Generation System with Maximum Power Extraction Capability

  • Jayalakshmi N.S Ministry of Power, Government of India, through the Central Power Research Institute, Bangalore, Karnataka under RSOP
  • D.N. Gaonkar Ministry of Power, Government of India, through the Central Power Research Institute, Bangalore, Karnataka under RSOP
Keywords: Distributed generation, wind power generation system, PMSG, PV power generation system, MPPT controllers, battery storage, PWM voltage source inverter, PV control

Abstract

The production of electricity from renewable energy sources like wind and photovoltaic energy has increased in recent years, due to environmental problems and the shortage of traditional energy sources. In this article we present a detailed mathematical model and a control scheme for hybrid wind and PV based DG system with battery and maximum power extraction capability for isolated mode of operation. The wind power generation system uses wind turbine (WT), a permanent magnet synchronous generator (PMSG), a three-phase diode rectifier bridge, DC/DC boost converter with maximum power point tracking (MPPT) controller. The PV generation system uses PV array, a boost converter with maximum power point tracking controller. Both sources and battery are connected to common dc bus with a dc link capacitor and supply power to load through PWM voltage source inverter. The overall control system consists of MPPT controller for both Wind and PV power system, a bi-directional dc-dc converter controller for battery energy storage management and load side inverter controller for voltage and frequency regulation. Control strategies for individual system components of the proposed system are designed with a view to achieve an acceptable level of voltage and frequency regulation while extracting the maximum power from wind and PV system. The performance of the developed hybrid system is investigated in terms of voltage and frequency regulation capability under changing wind, solar irradiation and variable load conditions.

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Author Biographies

Jayalakshmi N.S, Ministry of Power, Government of India, through the Central Power Research Institute, Bangalore, Karnataka under RSOP

Jayalakshmi N.S., the corresponding author, is an Associate Professor (Sr. Scale) in the Department of Electrical and Electronics Engineering, Manipal Institute of Technology, Manipal, Karnataka, India. She is currently a Ph.D. student in the Department of Electrical and Electronics Engineering, National Institute of Technology, Karnataka, Surathkal, India. Her research area includes PV and wind based distributed generation systems, modeling and control of microgrid. Email: jayalakshmi.ns@manipal.edu

D.N. Gaonkar, Ministry of Power, Government of India, through the Central Power Research Institute, Bangalore, Karnataka under RSOP

D.N. Gaonkar (M’2008) received his Ph.D. degree from the Indian Institute of Technology Roorkee, India; in 2008. He was a visiting research scholar at the University of Saskatchewan Canada in 2008. He has edited and written a chapter in the book titled DISTRIBUTED GENERATION, which is published by INTECH publication Austria. He has published many articles in international journals and conferences. Presently he is working as an Assistant Professor in the Department of Electrical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, INDIA. His research areas of interest are Power System Operation and Control, Power Electronics and Distributed Generation Systems. Email: dngaonkar@gmail.com

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