MULTILEVEL INVERTER TOPOLOGY FOR INTEGRATED SMALL HYDRO-WIND GENERATION SYSTEM

Abstract

Wind and hydro energy has many advantages, it does not pollute and it is an inexhaustible source. In this paper a Integrated model of small hydro and wind has been taken into consideration. This study presents a robust and cost-effective microgrid topology for integrating two commonly available wind and small-hydro renewable energy sources. Two generators has been used in this proposed topology one on hydro side and another one on wind side. pitch angle controller has been used for controlling the rotational speed of wind turbine furthermore Turbine and generator are coupled by the two mass drive train, Drive train transfers high aerodynamic torque at rotor to low speed shaft of generator through gearbox. The proposed system is integrated using a five level Multilevel inverter and a boost converter which are maintaining voltage and frequency, mitigating power quality problems and performing sensor maximum power point tracking by means of Incremental and conductance method respectively. separate batteries is also used in MLI at each phase for smooth supply to inverter .In this research work the investigation of small hydro and wind Integrated power system is done for obtaining the model characteristics in order to reduce stress on the transient stability. This research work is based on the model developed and simulated through Sim Power System simulation software in MATLAB.