Optimized Design for AMB Based Flywheel Energy Storage and Power Conversion Systems

A flywheel energy storage system (FESS) works by accelerating a flywheel to a very high speed and maintaining the energy in the system as rotational energy. An Active magnetic bearing flywheel (AMB-FW) has many advantages such as low friction loss, short time distance, and no chemical waste. They can be expected to replace lead acid batteries as an energy resource. Our research group aimed to construct a new static FESS by using AMB-FW. The charge and discharge unit (CDU) that controls the charge and discharge energy dominates the static system. This paper reports on the result of creating and controlling CDU through simulations and experiments