Wind-Photovoltaic + Energy Storage Off-Grid Microgrid System

1)     Customer Pain Points: The need for a stable and reliable power supply to support daily lighting, communications, and equipment operation. Single wind power or photovoltaic systems suffer from significant weather dependency, resulting in highly unstable output and inability to ensure continuous power supply.

2)     Solution: Deployment of an off-grid wind-photovoltaic complementary microgrid system consisting of a 5 kWp Photovoltaic array, a 5 kW wind turbine, and 30 kWh Energy Storage System. The energy storage system functions as an energy hub and stabilizer, utilizing an intelligent controller with a wide voltage input range to efficiently manage energy input from photovoltaic arrays and wind turbines, while interfacing with an approximate 2.5kW daily load.

3)     Operating Mode: The energy management system synchronously coordinates wind, solar, and storage assets in real time. When wind and solar resources are adequate, generated power is prioritized for load supply, with surplus energy stored in the battery; when wind and solar output is insufficient, the battery discharges to cover the deficit; Under continuous overcast and windless conditions, the energy storage battery can independently sustain load operation for multiple days.

4)     Implementation Results: The wind-solar hybrid system markedly improved the overall stability and self-sufficiency of the energy supply, reduced operational costs to near zero, and generated no noise or air pollution, thereby establishing a green, low-carbon, and reliable independent power supply archetype.