Photovoltaic System Components and Configurations
Expert-defined terms from the Professional Certificate in Photovoltaic Installation Techniques course at London School of Planning and Management. Free to read, free to share, paired with a globally recognised certification pathway.
Photovoltaic System Components and Configurations #
Photovoltaic System Components and Configurations
Photovoltaic System Components #
1. Solar Photovoltaic Panels #
Also known as solar panels, these devices are made up of multiple solar cells that convert sunlight into electricity through the photovoltaic effect.
2. Inverter #
A device that converts the direct current (DC) electricity produced by solar panels into alternating current (AC) electricity that can be used in homes and businesses.
3. Charge Controller #
A component that regulates the flow of electricity from the solar panels to the battery to prevent overcharging.
4. Battery #
Stores excess electricity generated by the solar panels for use during periods of low sunlight or at night.
5. Mounting Structure #
Provides support for the solar panels and ensures they are securely attached to the roof or ground.
6. Wiring and Connectors #
Transmit electricity between the various components of the photovoltaic system.
7. Monitoring System #
Allows users to track the performance of their photovoltaic system and monitor energy production in real-time.
Photovoltaic System Configurations #
1. Grid #
Tied System: A photovoltaic system that is connected to the utility grid, allowing excess electricity to be fed back into the grid for credit or compensation.
2. Off #
Grid System: A standalone photovoltaic system that is not connected to the utility grid and relies on batteries for energy storage.
3. Hybrid System #
Combines elements of both grid-tied and off-grid systems, allowing for energy storage while still being connected to the grid.
4. Microinverter System #
Each solar panel is equipped with its own inverter, increasing energy production and system efficiency.
5. String Inverter System #
Several solar panels are connected to a single inverter, simplifying installation but potentially limiting energy production if one panel underperforms.
6. Battery Backup System #
Includes a battery bank to store excess electricity for use during power outages or when the grid is unavailable.
7. Ground #
Mounted System: Solar panels are installed on the ground rather than on rooftops, allowing for optimal positioning and easier maintenance.
8. Rooftop System #
Solar panels are mounted on the roof of a building, taking advantage of available space and reducing the need for additional land.
9. Tracking System #
Solar panels are mounted on a tracking device that follows the sun's path throughout the day, maximizing energy production.
1. Photovoltaic #
The process of converting sunlight into electricity using solar cells.
2. Renewable Energy #
Energy derived from natural resources that are replenished at a faster rate than they are consumed.
3. Net Metering #
A billing arrangement that allows owners of photovoltaic systems to receive credit for excess electricity they generate and feed back into the grid.
4. Energy Storage #
The capture and retention of energy for later use, often through batteries or other storage devices.
5. Maximum Power Point Tracking (MPPT) #
A technology used in inverters to maximize the power output of solar panels by continuously adjusting the operating point.
6. Photovoltaic Efficiency #
The ratio of the electrical output of a solar panel to the amount of sunlight it receives.
7. Solar Insolation #
The amount of sunlight that reaches a specific area over a given period, measured in kilowatt-hours per square meter per day.
8. Photovoltaic Array #
A group of interconnected solar panels that work together to generate electricity.
Examples #
1. A homeowner installs a rooftop photovoltaic system with a grid #
tied configuration to reduce their electricity bills and take advantage of net metering.
2. A remote cabin uses an off #
grid photovoltaic system with a battery backup to power essential appliances and lighting.
3. A commercial building opts for a ground #
mounted photovoltaic system with a tracking device to maximize energy production and offset energy costs.
Practical Applications #
1 #
Residential photovoltaic systems can help homeowners save money on their electricity bills and reduce their carbon footprint.
2. Off #
grid photovoltaic systems are commonly used in remote areas where connecting to the utility grid is not feasible.
3 #
Commercial and industrial photovoltaic systems can provide significant energy savings and environmental benefits for businesses.
Challenges #
1 #
Initial installation costs of photovoltaic systems can be high, although prices have been decreasing in recent years.
2 #
Variability in sunlight and weather conditions can affect the energy production of photovoltaic systems, especially in locations with limited sunlight.
3 #
Proper maintenance and monitoring are essential to ensure the optimal performance and longevity of photovoltaic systems.