Lunar Energy, an American cleantech company founded in 2020, designs and engineers the home battery system of the next generation to electrify all homes and connect communities to form clean, resilient virtual power plants.
Challenges: home solar energy
Solar energy is a clean and renewable source of energy, and its use can reduce reliance on fossil fuels and the carbon footprint. Solar cells, also known as photovoltaic (PV) cells, convert sunlight into electricity. The installation of solar panels on rooftops is one of their most common uses. Solar panels installed on home roofs can reduce energy costs, lower carbon emissions, and promote sustainability.
To connect the solar panels to your home's electrical system, a solar power system with DC-to-AC converter (or inverter) and other necessary equipment are required. The inverter converts the DC power generated by the solar panels into AC power, which is then fed into the electrical grid.
A PV disconnection system is an essential safety feature of a solar power system because it can help prevent accidents and protect people and equipment in case of emergencies. There are several reasons why this system is so critical:
- Electrical hazards: Solar panels generate electricity when exposed to sunlight, and this electricity can be hazardous to workers and others who come into contact with the system. The PV disconnection system can rapidly disconnect the solar panels from the rest of the system, thereby reducing the risk of electrical shock or other accidents.
- Fire hazards: Solar panels can also pose a fire hazard if they are damaged or become overheated. In case of a fire, the PV disconnection system can quickly shut down the solar power system, reducing the risk of the fire spreading and making it easier for firefighters to safely extinguish the flames.
- Maintenance: Solar power systems require regular maintenance, which often involves working on the system's electrical components. The PV disconnection system can disconnect the solar panels from the rest of the system, allowing workers to safely perform maintenance without the risk of electrical shock or other accidents.
- Regulatory requirements: The National Electric Code (NEC) requires that all solar power systems be equipped with a PV disconnection system. Compliance with these requirements is essential for the safe and legal operation of a solar power system.
Most existing PV disconnect systems have multiple boxes made by various manufacturers. These distinct components each have their own controls and may be incompatible with one another. This adds complexity to installation and control of a power system’s various components. This fragmented PV disconnection system may cause homeowners and installers to become confused.
Lunar Energy Technology
Lunar Energy develops a solar power system with a single integrated PV disconnect switch to facilitate multiple types of disconnections, including rapid shutdown, PV disconnect, and energy storage system disconnect. Compared to most existing PV disconnect systems, Lunar Energy’s single integrated PV disconnect switch is compact, elegant, and super easy to install. The operation of the Lunar Energy’ solar power system is controlled by Lunar Gridshare software.
Lunar Energy home battery
The diagram below depicts Lunar Energy’s solar power system, which connects the energy storage system (e.g., battery), receives input power from solar panels, and supplies AC power to users.
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