TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Aspects Concerning the Implementation of Electric Bikes the Urban Transportation of Cluj-Napoca City
(Aspecte privind implementarea bicicletelor electrice în transportul urban din municipiul Cluj-Napoca)
Vol LVIII • No. 2bis/2006
Viorel Trifa, Mircea M. Radulescu, Călin Mărginean, Carmen Ciurtin
Technical University of Cluj-Napoca
e-mail: trifa@edr.utcluj.ro

 Keywords   electric bike market, motor design, finite element field analysis

 Abstract
The paper is a first stage of a new research devoted to the application of reluctance motors to drive conventional bikes. Electric bike market is one of the most dynamic today, involving a large number of producers and various types of units, concerning technical data and prices. One of the most promising reluctance motor suitable for direct drive of an electrical bike has been chosen and designed accordingly. It consists of an inverse radial stepping motor, with a fixed stator mounted on front wheel shaft and an external toothed rotor fixed on the front wheel itself.
Preliminary design is described with the study of magnetic field in order to provide the optimal geometry of the motor and adequate windings.

 Rezumat
Lucrarea prezintă o nouă direcţie de cercetare dedicată acţionării bicicletelor electrice cu motoare electrice reluctante. Piaţa bicicletelor electrice este astăzi una dintre cele mai dinamice, implicând un număr mare de producători şi diverse tipuri de unităţi, atât în privinţa caracteristicilor tehnice, cât şi a preţului. Unul dintre cele mai promiţătoare tipuri de motoare reluctante, potrivit pentru acţionarea directă a bicicletelor electrice, a fost ales pentru studiu şi proiectat. Presupune un motor pas cu pas radial de construcţie inversată, cu statorul fixat pe arborele roţii-faţă şi cu rotorul dinţat fixat chiar de roata-faţă. Proiectarea preliminară continuă cu studiul câmpului magnetic pentru obţinerea unei geometrii optime a motorului şi alegerea înfăşurării.



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