Abstract
This paper presents a low-cost design of the analog controller for the photovoltaic driven single-phase inverter to generate desired output voltage. The hardware set-up mainly consists of an inverter and an analog controller. The developed controller controls the output voltage of the inverter using SPWM (Sinusoidal Pulse Width Modulation) technique. The inverter, which is designed using Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET) as a switch, generates high-quality output with reduced ripple content and less filtering requirement, making the whole setup cost-effective and efficient. A gate driver circuit is also employed to provide isolation between the inverter and the analog controller. The closed loop analog controller for the photovoltaic driven inverter is implemented and tested for various loads. In all these cases, the output voltage waveforms are of high quality with a lesser number of lower order harmonics. In this way, the paper presents a low-cost design of the inverter that can be used for low-power domestic applications. Citation: Ranjan, A., Jalutharia, S., GARG, H., and Gupta, N. (2018). Design and Implementation of Analog Controller Based Single Phase Full Bridge Inverter for Photovoltaic Applications. Trends in Renewable Energy, 4, 102-113. DOI: 10.17737/tre.2018.4.3.0069
Highlights
Many parts of the world are still in darkness with no sources of power
The D.C. output of the PV array is coupled to the input of single phase inverter in order to obtain AC output voltage and frequency 50Hz
The output voltage of the inverter is controlled by generating suitable firing sequence for the inverter using an analog controller, which is present in feedback to the main power circuit
Summary
The researchers and scholars are working hard on non-conventional renewable sources of energy to provide an energy source in those regions. As these are environmentally friendly and clean energy sources, it has become an area of interest to the whole world. It is based on the technology that converts solar energy to electrical energy. The use of PV array is not favored much because of the high cost of the installation. In spite of the high cost of installation, the use of PV array is increasing in most parts of the world to pump water, to get hot water in winters and even for lightening purposes [1].
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