What is Solar Electricity?
Encyclopedia
Field: Encyclopedia
0
China
What is Solar Electricity?
Solar Electricity Definition
Solar electricity is produced by sunlight hitting photovoltaic cells, generating power.
Photovoltaic Effect
Solar energy electrical engineering relies on the photovoltaic effect, where sunlight creates electricity in semiconductor materials.
Structure of Solar Cells
A solar cell consists of a thin n-type layer on top of a thicker p-type layer, with a depletion region at their junction. 
Charge Separation
Sunlight causes electrons to move to the n-layer and holes to the p-layer, creating a potential difference.
Applications of Solar Electricity
Solar power is ideal for remote locations and moderate power needs, though it is less practical for high-power equipment.
Give a tip and encourage the author!
Recommended
Why does a 2-in 4-out 10 kV solid-insulated ring main unit have two incoming feeder cabinets?
A "2-in 4-out 10 kVsolid-insulated ring main unit" refers to a specific type of ring main unit (RMU). The term "2-in 4-out" indicates that this RMU has two incoming feeders and four outgoing feeders.10 kVsolid-insulated ring main unit are equipment used in medium-voltage power distribution systems, primarily installed in substations, distribution stations, and transformer stations to distribute high-voltage power to low-voltage distribution networks. They generally consist of high-voltage incomi
Garca
12/10/2025
Low-Voltage Distribution Lines and Power Distribution Requirements for Construction Sites
Low-voltage distribution lines refer to the circuits that, through a distribution transformer, step down the high voltage of 10 kV to the 380/220 V level—i.e., the low-voltage lines running from the substation to the end-use equipment.Low-voltage distribution lines should be considered during the design phase of substation wiring configurations. In factories, for workshops with relatively high power demand, dedicated workshop substations are often installed, where transformers supply power direc
James
12/09/2025
Three-Phase SPD: Types, Wiring & Maintenance Guide
1. What Is a Three-Phase Power Surge Protective Device (SPD)?A three-phase power surge protective device (SPD), also known as a three-phase lightning arrester, is specifically designed for three-phase AC power systems. Its primary function is to limit transient overvoltages caused by lightning strikes or switching operations in the power grid, thereby protecting downstream electrical equipment from damage. The SPD operates based on energy absorption and dissipation: when an overvoltage event occ
James
12/02/2025
Neutral Grounding Methods for Conventional-Speed Railway Power Systems
Railway power systems primarily consist of automatic block signaling lines, through-feeder power lines, railway substations and distribution stations, and incoming power supply lines. They provide electricity to critical railway operations—including signaling, communications, rolling stock systems, station passenger handling, and maintenance facilities. As an integral part of the national power grid, railway power systems exhibit distinct characteristics of both electrical power engineering and
Echo
11/26/2025
