High speed electromechanical energy storage

• Autorzy: Rowiński A. , Irzycki A. , Snopkiewicz K.
• Języki publikacji: EN

Abstrakty

EN

Kinematical, electromechanical energy accumulator is a facility that converts supplied electrical energy to the kinetic one, stored in the rotating inertial system. Electric driving motors can operate both as a propulsion units, providing torque to the rotor shaft, and as generators in the course of braking. The prototype is designed to operate in a vacuum; the energy accumulator is located in a sealed pressurized vessel connected to the apparatus, which can generate vacuum pressure down to 1 Pa. The accumulator is destined for storage energy of 7.2 MJ at a speed of up to 20,000 1 / min. The energy accumulator is equipped with inert weight in the form of metal disc, connected to a composite band. In the course of operation, the rotor assembly is suspended in noncontact manner in housing assembly while the main body is fastened to the inner ring of the pressure vessel. The rotor consists of a shaft on which are mounted: a metal disc together with a band made of carbon fibre, inset into inert weight using epoxy resin; four disc rotors of two electric motors; two disks which are magnetic armature for electromagnetic bearings operating along the shaft axis; bushings of both sleeve bearings; fixing sleeves, washers and lock nuts to fix particular elements on the shaft. During normal operation the rotor is positioned in the radial direction through two electromagnetic bearings, top and bottom, located at both ends of shaft and operating in the differential arrangement, and in the axial direction - by a system of two eight-pole electromagnetic bearings. In the idle state rotor is based on the spherical tip of the mobile support and on the raceway of slide bearing located in the top cover. The prototype facility is designed to carry out performance tests, both under normal conditions of pressure and temperature and in vacuum environment, of: electromagnetic bearings, start-up/emergency devices, functional integration of all components and air tightness of tubing inside the tank. Measurement of radial and axial clearances between the rotor elements and housing for full speed range will be completed also.

Słowa kluczowe

EN

kinematic energy storage; electric motors

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2012
• Tom: Vol. 19, No. 2
• Strony: 459--464
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Rowiński A.

autor

Irzycki A.

autor

Snopkiewicz K.

• Institute of Aviation Krakowska Av. 110/114, 02-256 Warsaw tel.: [phone] w 316, fax: [phone],

Bibliografia

• [1] Brzoska, Z., Wytrzymałość materiałów, PWN, 1972.
• [2] Przemieniecki, J. S., Theory of Matrix Structural Analysis Dover Publications INC, New York 1985.
• [3] Cook, R. D., Finite Element Modeling For Stress Analysis, John Wiley and Sons, INC 1995.
• [4] MSC / NASTRAN for Windows - Version 2.1, Update November 1996.