Flywheel




		HTS - cross technology for energy technique




			Power Control and Distribution

	Wire, Power Cable, Fault – current limiter


			Power Generation

		Generator, Transformer


	HTS Advantages:

	• More power in the same volume

	• Higher Power-to-weight ratio and lower electrical losses

	• Low environmental influence

		Energy Storage

		Battery, SMES, Flywheel, Capacitors


	Compact Flywheel Energy Storage System (FESS) with HTS magnetic bearing.


	Concept:

	storage capacity: 6-8 kWh / 280 kW HTS magnetic bearings, low loss high rim speed (800 - 1000 m/s) annular CF rotor body low loss high power generator / motor time to full power : 2 millisec





		Actual Flywheel project:


		Compact design / comparable small volume Stored energy /max. power: > 5 kWh/250 kW Non-contacting magnetic rotor stabilization 450 kg composite fibre rotor Low electrical and windage losses High –efficient PM motor / generator HTS bearing: 10 N/cm² force density UPS and power quality application Round -trip efficiency > 90 %

	Larger HTS flywheel project (in preparation):

	15 kWh/ 400 kW Engineering & prototype for Japanese market Technical & proprietary cooperation T. Oyama & group Utilizing patents JP 2992578, US 5.245.270 (T. Oyama)