Nanjing Oulu Electric Wind-Solar Hybrid Power System

The wind-solar hybrid power system generates electricity through both wind turbines and solar PV modules. Solar arrays and wind turbines produce AC power, which is converted to DC by a hybrid controller and stored in battery banks. When power is needed, an inverter transforms the stored DC power back into AC for distribution to electrical loads.

System Components:

• Wind turbine

• Solar PV array

• Hybrid controller

• Pure sine wave inverter

• Battery bank

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1. Complementary Characteristics
Solar and wind energy exhibit strong temporal and regional complementarity:

• Sunny days: High solar output, lower wind

• Cloudy/rainy days: Low sunlight but increased wind

• Nighttime: No solar power, but temperature differences generate wind

This natural synergy ensures continuous, stable power supply.

2. Working Principle

• Daytime (sunlight): Solar panels convert light to electricity, powering loads and charging batteries.

• Night/rainy (windy): Wind turbines generate power from wind, supplying loads and storing excess energy.

• No sun/wind: Batteries discharge stored power to maintain operation.

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3. System Structure Diagram
[Diagram description: Integration of wind/solar generation → Controller → Battery storage → Inverter → Load]

4. Operating Modes of Nanjing Oulu Electric Wind-Solar Hybrid Power System
The standalone wind-solar hybrid power system operates in the following modes:

• Hybrid Power Mode: Both solar PV arrays and wind turbines supply energy simultaneously.

• Windless Mode: When wind speed is insufficient, only solar PV arrays provide power for loads and battery charging.

• Sunless Mode: Only wind turbines operate to generate electricity.

• Battery Discharge Mode: When neither wind nor solar is available, the backup battery bank supplies power to the loads.

5. Application Areas of Nanjing Oulu Electric Wind-Solar Hybrid Power System

• Residential and productive electricity in off-grid rural areas

• Outdoor semiconductor lighting

• Navigation aids (e.g., buoys, lighthouses)

• Power supply for surveillance cameras

• Oil and gas field operations

• Telecommunication base stations

• Water pumping for irrigation

• Energy storage power stations