A PWM Controlled IGBT based VSCS with a Battery Energy Storage System for an Isolated Wind-Hydro Hybrid System Using Cage Generators
Journal Title: International Journal of Science Engineering and Advance Technology - Year 2014, Vol 2, Issue 11
Abstract
This paper presents a Pulse Width Modulation (PWM) controlled Insulated Gate Bipolar Transistor (IGBT) based Voltage Source Converters (VSCs) with a battery energy storage system (BESS) for an isolated wind-hydro hybrid system using two squirrel cage induction generators (SCIG) or simply two cage generators, one driven by a variable speed wind turbine and another driven by a constant power hydro turbine. The proposed system has a battery energy storage system (BESS) at the middle of two back –to-back connected pulse width modulation (PWM) controlled insulated-gate-bipolar –transistor (IGBT) based voltage source converters (VSCs).The main objectives of the control algorithm for the VSCs are to achieve the maximum power point tracking (MPPT) through rotor speed control of a wind turbine driven SCIG at machine side (or generation side) and to control the magnitude and frequency of the load voltage at load side( or hydro power generation side). The proposed system has a facility to bidirectional real and reactive power flow, by which it controls the magnitude and frequency of the load voltage. The control techniques with windhydro hybrid power is modeled and simulated in MATLAB 2009a environment using Simulink and Sim Power System set tool boxes. The proposed system studied under various load conditions with different input wind speeds.
Authors and Affiliations
D. NARENDRA| M.Tech Scholar, Dept of EEE Srivenkateswara College of Engineering, JNTUK, Srikakulam, A.P, India, N. V. A RAVI KUMAR| Associate Professor, HOD, Dept of EEE Srivenkateswara College of Engineering, JNTUK, Srikakulam, A.P, India
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