PV Based Modified Boost Converter with Closed loop Voltage Control for Constant Voltage Applications

Renewable energy resources have become one of the alternatives to the ever increasing energy demand. But the low voltage output of the renewable resources like wind, solar, hydro etc. must be boosted up to other voltage levels for various residential or industrial applications. DC-DC converters are used to convert the unregulated output voltage of the solar cells to regulated voltages. Most of the converter suffers from high ripple output voltages. This paper presents a modified boost converter which reduces the output ripple voltage thereby giving a constant DC output voltage. A closed loop voltage control with PI controller is used to maintain constant output voltage with variation in load. The converter topology is designed and simulated with MATLAB/Simulink to validate its theoretical result. ARDUINO platform is used to generate pulses for hardware implementation. The result obtained through the simulation is verified with the hardware.