Flywheel energy storage technology is a new energy storage technology, the rich electrical energy into mechanical energy storage, there are a few questions do not understand to consult you.

1. In the process of energy storage, is the energy of the power grid stored by the motor one by one, or stored together?

2, at the end of the energy storage, when the flywheel reaches the rated speed, the motor is disconnected from the flywheel or continue to follow the flywheel, that is, whether the flywheel needs the motor to maintain energy?

3, how is the efficiency of flywheel energy storage, when running at high speed, the resistance is relatively large how to solve this problem? Is it in vacuum or magnetic levitation?

4, when the flywheel releases energy, the speed of the flywheel will gradually decrease with the release of energy, at this time, the speed of the flywheel with the generator will gradually decrease, then the voltage emitted will also gradually decrease with the speed reduction, and the voltage emitted in the later period is not enough to send to the grid, then whether to use the internal booster device, the lower voltage will rise to a relatively high range, Then should it be DC boost DC-DC or AC-AC transformer boost, if it is AC-AC is it also need to adjust the voltage?