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2014 (Vol. 7, Issue: 5)
Article Information:

Optimum Speed Calculation for Electrical Machine Optimization in Variable Speed Applications

A.A. Nasiri, B. Abdi, S.M.M. Mirtalaei and M.I. Ghiasi
Corresponding Author:  A.A. Nasiri 

Key words:  Battery, EMB, energy storage, variable speed, , ,
Vol. 7 , (5): 897-902
Submitted Accepted Published
August 29, 2012 October 03, 2012 February 05, 2014
Abstract:

Electro-Mechanical Batteries have important advantages compared with chemical batteries, especially in Low Earth Orbit satellites applications. High speed, slot-less, external rotor, permanent magnet machines are used in these systems as Motor/Generator. Commonly, optimizations of electrical machines are done in constant, nominal speed. But Electro-Mechanical Batteries are variable speed system. The efficiency is variable versus time, so, optimization in each single speed cannot necessarily cause the overall efficiency optimization. In this study, iron and copper losses are formulated versus speed variations of rotor. Then, for energy optimization, the optimization speed is achieved by equalizing the average iron loss and copper loss over a period of charge and discharge.
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  Cite this Reference:
A.A. Nasiri, B. Abdi, S.M.M. Mirtalaei and M.I. Ghiasi, 2014. Optimum Speed Calculation for Electrical Machine Optimization in Variable Speed Applications.  Research Journal of Applied Sciences, Engineering and Technology, 7(5): 897-902.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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