A proven principle reimagined:
what do we, pottery and NASA have in common?
The flywheel is the oldest known method for storing energy: In fact, even the potter’s wheel uses the principle of storing rotational energy, as did the spinning top. With AMPERAGE, the modern 4th generation high-performance flywheel energy storage, this principle is raised to a new level.
Made of carbon fiber, with integrated magnetic bearings and operating in a high vacuum, AMPERAGE convinces with its high efficiency and almost unlimited number of charging cycles. And it is even based on a principle that NASA has already worked on.
How the technology works
An electric motor accelerates the flywheel to charge up the high-performance energy storage system. In generator mode, the motor decelerates the flywheel again and the energy stored during rotation is converted back into electricity.
Novel integrated hollow cylinder design – the flywheel rotates around the stator. The design affords the highest capacity and is cost-effective to manufacture. The modular store rotates at up to 16,000 rpm and can be charged as often as required.
Motor / Generator
The external rotor synchronous machine accelerates the flywheel mass when charging and decelerates it again as a generator when discharging. The machine demonstrates high power density and great efficiency and dynamics. Even at full load, the power is reversed in a highly dynamic manner within less than 30 milliseconds.
The high speeds and high energy density are only made possible thanks to the contact-free magnetic bearing. The industrially proven storage system is efficient and wear-free. The storage system has a maintenance interval of two years.
Operation of the flywheel mass in a high vacuum at up to 1 x 10-5mbar minimizes air friction and contributes to the high efficiency of the storage system. The vacuum housing also safeguards the system’s safety, even at 1.2 x overspeed.
Sustainable increase in performance
Designed for maximum performance
As an highly powerful system, AMPERAGE is designed to store energy with maximum efficiency in the smallest installation space and release it again with maximum output. Designed as an external rotor based on a rotating hollow cylinder made of high-strength material, the storage system is extremely robust.
Modular and scalable
The modular design accommodates needs-based systems, ranging from individual systems to larger clusters consisting of several energy storage systems. This means that the features of the systems can be conveniently adapted and new applications made accessible.