Energy generated by PV panels will be firstly used for local load, the remaining energy used to charge batteries, the rest power fed to the grid.

When no PV, the energy stored in the battery will be firstly support local load. When battery energy is insufficient, the grid will supply power to load at the same time.

When grid fails, the system automatically switchs to back-up mode. The Back-up load can be supported by PV and battery.

The grid can charge the battery. Charging time and power are adjustable.

1. Our main products are off grid wind turbine controller, On grid wind turbine controller, solar charging controller, wind-light complementary controller, wind-light complementary street lamp controller, On grid inverter, off grid inverter, frequency converter, stabilized frequency power supply, etc.

2. With first-class manufacturing technology, advanced technology and equipment, strong technical force, perfect testing means and personnel management, we have carried out 17 research and development projects in the last three years, completed 16 transformation of scientific and technological achievements, and invested all by ourselves to implement the transformation, averaging 5.3 transformation of scientific and technological achievements each year.

3. We take technological innovation as the basis of development, annual R&D cost is not less than 20% of sales revenue, and continuously explore advanced technologies in the field of new energy power sources, such as electromagnetic control technology for wind turbines, MPPT technology, yaw wind turbines control technology, wind and solar complementary system Internet of Things monitoring, etc. Now there are five national invention patents for core technologies, twelve utility model patents, and the control technology for wind turbines has reached the advanced international level.

4. There is a complete product quality assurance system and ISO 9001 certification. Perform comprehensive quality control, rigorous test one by one, each performance is superior to the relevant national standards, all products have passed the EU CE certification. Ensure user safety and reliable use. The products export to more than 120 countries and regions, such as Germany, Japan, the United States, the United Kingdom, Canada, Australia, Egypt, Brazil, Saudi Arabia, and have established a good image in the domestic and foreign markets.

5. We are based on the market, pay attention to customers, provide high-quality products, adhere to technological progress, scientific management and standardized operation are the key to our success. We will jointly meet the challenges of the new century, shape a good image outside, and construct the blueprint of a modern enterprise in an all-round and three-dimensional way.