In response to the demand for high-performance UPS for large-scale data centers with high-power, high-reliability, maintenance-free, green, energy-saving and environmentally-friendly mobile emergency power supply systems, magnetic levitation energy storage flywheel DC and magnetic levitation energy storage flywheel UPS verification systems have been developed; Carry out research on the overall technology of efficient and modular maglev energy storage flywheel, high-power high-speed flywheel motor technology, vacuum sealing technology based on low-temperature lead welding, etc., focusing on breaking through high-stability and high-reliability active magnetic suspension support, high-power permanent magnet synchronous motor/Generator drive and power generation, high-precision local dynamic balancing of large rotors, and create a new generation of maglev energy storage flywheel system that is intelligent, efficient, economical, environmentally friendly, safe and reliable.

Magnetic suspension energy storage flywheel system diagram

The main technical indicators are as follows:

1) Peak power: 300KVA;

2) Peak energy: 1.125kWh;

3) Speed: 30000rpm;

4) Efficiency: 95%;

5) Operating temperature: -20~40℃。

In the field of smart grids, China generated approximately 6 trillion kilowatt-hours of electricity nationwide in 2016, so the grid needs to be equipped with approximately 240 billion kilowatt-hours of frequency modulation capacity (calculated based on a frequency modulation ratio of 4%). If flywheel is used for frequency modulation, then: Compared with gas-fired frequency modulation power stations, CO2 emissions from flywheel energy storage power stations reduce annual emissions by approximately 130 million tons; compared with coal-fired thermal power, the annual emission reduction is approximately 336 million tons, equivalent to 54 million trees planted.