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Enhanced Performance of Isolated Wind-Diesel (IWD) Hybrid System feeding Heavy Load under various Operating Conditions


  • Department of Electrical and Electronics Engineering, University Institute of Engineering and Technology, Panjab University, Chandigarh - 160014, Punjab, India


Objectives: To check /validate the stiffness of IW-D Hybrid System by putting heavy load of 150 hp at various loading conditions. And, to implement the remedies to the ill-conditions/operating conditions like frequency runaway and varying wind speed and to study the effect of these conditions on overall system as well as on heavy load. Further, to improve system performance, a suitable controller is to be incorporated with pitch angle control system. Method/Statistical Analysis: The electromechanical dynamics of various large electrical machines are represented by their full order models. The models of synchronous machine (7th order) of diesel genset, SEIG (5th order) and heavy load (5th order) are simulated to obtain power and voltage dynamics. The system dynamics consist of higher order differential equations, which are solved by converting into simpler algebraic equations related to current and voltage that are solved in short time by using phasor simulation in MATLAB/Simulink environment. Findings: The hybrid power systems are becoming popular because of greater efficiency and balance of energy supply. Due to many advantages like ruggedness, inexpensiveness and requirement of less maintenance in contrast to other electrical machines, heavy load like 3-ϕ squirrel cage induction motor that shares a major part of the total electrical portion on any power system. From the exhaustive study of, it is found that very few authors have worked on such system and the performance of the heavy load is either not considered of if taken into account it is not considered in detail. In this paper, an IW-D Hybrid Power System feeding heavy load is considered to analyze/ check the stiffness of IW-D Hybrid System. Few ill-conditions like frequency runaway and varying wind speed affects the system functioning and have considerable impact on the heavy load is reported in few papers but its remedy is not implemented or if given, the ill effect of these problems on the heavy load is not considered which needs great attention. Therefore, the solutions of above problems are mentioned in this work. Application/Improvement: The dynamic performance of modified IW-D Hybrid System has been validated and checked in context with ruggedness by putting heavy load of 150 hp at normal and overload condition. The dynamic behavior of IW-D System as well as heavy load has been improved for frequency runaway. Further, a PI controller including pitch servo is implemented to control the output of SEIG driven by wind turbine in case of varying wind speed, which improves the dynamic performance of the system.


Diesel Genset, Dummy Load, Excitation Capacitor, Heavy Load (3-Φ Squirrel Cage Induction Motor), Hybrid System, Isolated Wind-Diesel (IW-D) Self Excited Induction Generator (SEIG), Static Load.

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  • Mitra P, Zhang L, Harnefors L. Offshore wind integration to a weak grid by VSC-HVDC links using power-synchronization control: A case study. IEEE Transaction on Power Delivery. 2014 Feb; 29(1):453–61.
  • Wang Z, Yuwen B, Lang Y, Cheng M. Improvement of operating performance for the wind farm with a novel CSC-type wind turbine-SMES hybrid system. IEEE Transaction on Power Delivery. 2013 Apr; 28(2):693–703.
  • Muljadi E, Flowers L, Green J, Bergey M. Electrical design of wind-electric water pumping. ASMEJ Solar Energy Engineering. 1996; 118(4):246–52.
  • Roy S. Reduction of voltage dynamics in isolated wind–diesel units susceptible to gusting. IEEE Transaction on Sustainable Energy. 2010 Jul; 1(2):84–91.
  • Pena R, Cardenas R, Proboste J, Clare J, Asher G. Wind–diesel generation using doubly fed induction machines. IEEE Transaction Energy Conversion. 2008 Mar; 23(1):202–14.
  • Rahimi M, Parniania M. Grid-fault ride-through analysis and control of wind turbines with doubly fed induction generators. Electrical Power System Research. 2010 Feb; 80(2)z;184–95.
  • Nian H, Song Y, Zhou P, He Y. Improved direct power control of a wind turbine driven doubly fed induction generator during transient grid voltage unbalance. IEEE Transaction Energy Conversion. 2011 Sep; 26(3):976–86.
  • Vaishnavi V, Reddy PL. Analysis of standalone hybrid systems with reference to the reactive power management. Indian Journal of Science and Technology. 2016 Sep; 8(23):2096–103.
  • Brennen MB, Abbondanti A. Static exciters for induction generators. IEEE Transaction on Industrial Application. 1977 Sep; 13(5):422–8.
  • Singh B, Verma KS, Singh D, Singh CN, Singh A, Agarwal E, Dixit R, Tyagi B. Introduction of FACTS controllers, a critical review. International Journal of Reviews in Computing. 2011 Dec; 8(1):1–18.
  • Bansal RC, Bhatti TS, Kothari DP. A bibliography survey on induction generators for application of non-conventional energy systems. IEEE Transaction Energy Conversion. 2003 Sep; 18(3):433–9.
  • Suarez E, Botolotto G. Voltage-frequency control of a self–excited induction generator. IEEE Transaction on Energy Conversions. 1999 Sep; 14(3):394–401.
  • Chan TF. Steady-state analysis of self-excited induction generators. IEEE Transaction on Energy Conversion. 1994; 9(2):288–96.
  • Nacfaire HN. Wind-diesel and wind autonomous energy systems. New York: Wiley; 1984.
  • Saha TK, Kastha D. Design optimization and dynamic performance analysis of a standalone hybrid wind diesel electrical power generation system. IEEE Transaction on Energy Conversion. 2010 Dec; 25(4):1209–17.
  • Muljadi E, McKenna HE. Power quality issues in a Hybrid Power System. IEEE Transaction on Industrial Application. 2002 May/Jun; 38(3):803–9.
  • Sebastian R, Pena Alzola R. Simulation of a wind diesel system with battery energy storage. Electrical Power System Research .2011; 81(3):677–86.
  • Krause PC, Wasynczuk O, Sudhoff S. Analysis of electric machinery. IEEE Press; Piscataway, NJ. 1995. p. 1–632.
  • Heier S. grid integration of wind energy conversion systems. John Wiley and Sons Ltd; 1998.
  • Van TL, Nguyen TH, Lee DC. Advanced pitch angle control based on fuzzy logic for variable-speed wind turbine systems. IEEE Transaction on Energy Conversion. 2015 Jun; 30(2):578–87.
  • Bose BK. Power electronics and AC drives. Pearson Prentice Hall; 2007.
  • Krishnan R. Electric motor drives. Modeling, analysis and control. Pearson Prentice Hall; 2007.
  • Singh B, Singh M, Tondon AK. Transient performance of series-compensated three-phase self-excited induction generator feeding dynamic loads. IEEE Transaction on Industrial Application. 2010 Jul-Aug; 46(4):12–72.
  • Pahwa V, Sandhu KS. Transient analysis of three-phase self excited induction generator using new approach. International Journal of Engineering and Science. 2012 Dec; 2(6):1–11.
  • Abbey C, Li W, Joos G An online control algorithm for application of a hybrid ESS to a wind–diesel system. IEEE Transaction on Industrial Electronics. 2010 Dec; 57(12):3896–904.
  • Kaseem AM, Yousf AM. Robust control of an isolated hybrid wind–diesel power system using linear quadratic Gaussian approach. Electrical Power Energy System. 2011; 33(4):1092–100.
  • User Manual MATLAB/Simulink. version (R2012a). The MathWorks, Inc. Natick. MA. 01760-2098. 2013. Available from: Error! Hyperlink reference not valid.


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