Ppt on understanding flywheel energy storage

How does a flywheel drive a generator?

2.3.1.3. FWES In FWES, motors drive the high-speed rotation of the flywheel, and the electricity turns into kinetic energy to be stored. When electricity is needed, the flywheel drives generator , . The research on FWES in the US as the representative of western countries has lasted for 50 years.

What is the energy storage system?

The energy storage system includes 1×5 MW×2 h LiB, 1×2 MW×2 h VRFB. And the wind power of 99 MW had been put into operation in August 2012. The system is connected with the 35 kV bus. Through intelligent control, the system stores and releases power according to the coordinating with wind power.

How many kW is a solar energy storage system?

The wind power is 2×780 kW, the PV power is 300 kW. The energy storage system includes 1×2 MW×2 h PbAB, 1×500 kW×15 s SCES and 5×500 kW bidirectional converters. The system can realize the flexible shift between on-grid and off-grid operation. This bidirectional balance can guarantee the island's power utilization.

When was the first energy storage pilot production line built?

In March 2009, the first energy storage pilot production line with the capacity of 2 MW was built to produce 650 A h monomer. The pilot production line involved various crafts and more than 100 sets of testing equipment. Nearly two-thirds of them are independently developed with a number of independent intellectual property rights.

What is the White Book for energy storage industry in 2014?

White book for energy storage industry in 2014. China Energy Storage Alliance 2014. China Electricity Council. The study on the development policy of energy storage industry. China Power Enterprise Management 3; 2015. p. 24–28. Global energy storage distribution: the US accounts for 40% and Japan accounts for 39%.

How efficient are distributed fuel cells?

Recently, the technology of distributed fuel cells develops rapidly, the efficiency of combined heat and power (CHP) has reached above 95%, while the overall energy efficiency of traditional centralized fossil fuel power generation considering power grid loss is only about 41% for users.