Design and Implementation of Interleaved DC to DC Boost Converter using Hysteresis Control

This project describes the development of hybrid system (solar, wind) with highly reliable and efficient converter equipped with advanced control strategies. The control strategies make the hybrid system compatible for higher power ratings. Hybrid system is directed towards the load to generate electrical energy which is connected to a interleaved boost converter. These boost converter characteristics are controlled by using two techniques, namely hysteresis control and MPPT (Maximum Power Point Tracking) control to maintain constant output. With soaring prices of fossil fuels and intensifying concerns about climate change, renewable energy systems are gaining importance. Out of all renewable energy systems, solar and wind power generation is gaining momentum because of its simple, non-moving and cost effective features. The main objective of this project is to extract maximum possible energy from the Photovoltaic modules by using optimization techniques and to use it for home applications. Possibility of power generation using natural resources also reduces the cost of power systems and in some cases accounts for carbon credits and CDM (Clean Development Mechanism). Multiphase boost converters are used to control the voltages from solar modules. Interleaved boost converter is connected with hybrid system output which increases the voltage equivalent to the battery charging voltage. With the developed system we could achieve a wide range of output voltages by simply setting the reference voltage. The MPPT control used is of P&O (Perturb and Observe) type, i.e., it traces the maximum possible power by a simple algorithm involving voltage and power.