What is a Photovoltaic Cell? A Complete Theory Explained

solar panel

A photovoltaic cell is nothing but a simple PN junction. There is an N-type semiconductor layer facing the sunlight. The P-type semiconductor sits below the N-type layer. Obviously, at the junction of the N and P-type semiconductors, there is a depletion layer. Theory of Depletion Layer The basic theory of the depletion layer at the … Read more

How Monocrystalline Solar Panels Are Made – Complete Guide

Scientists began producing monocrystalline silicon nearly a century ago. Scientist Jan Czochralski discovered the modern process in 1918. However, engineers had built the first silicon solar cell by 1941. Manufacturers follow eight simple steps for this process. Make Metallurgical Silicon Silicon is the main material in monocrystalline panels. It comes from silica sand or quartzite … Read more

What is Grid Connected Rooftop Solar Power Plant – Easy Read

A grid-connected rooftop solar power plant converts sunlight into electricity. It supplies power to a building. It also sends extra power to the electric grid. The system works step by step from left to right. Rooftop Solar Modules A Solar PV module contains a predetermined number of photovoltaic cells. Solar PV modules are installed on … Read more

What is Maximum Power Point Tracking (MPPT)? Complete Theory

A solar panel does not give the same electric power all the time. Power changes with sunlight and temperature. To use the panel efficiently, we must extract maximum power. This is done using Maximum Power Point Tracking (MPPT). MPPT is used inside solar inverters. It mainly uses DC–DC converters. What is MPPT? MPPT is a … Read more

What is DC–DC Converter? Complete Explanation with Circuit

A DC–DC converter is an electronic circuit. It changes one DC voltage level into another DC voltage level. It does this without changing DC to AC. Why is a DC-DC converter needed? Solar panels give variable DC voltages. Because the photovoltaic cells produce voltage depending on the intensity of sunlight. The load needs a fixed … Read more