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ANALYSIS OF THE HARMONIC ORDER AFFECTING THE EDDY CURRENT BRAKING FORCE IN ELECTRICALMACHINES | ||
| Tikrit Journal of Engineering Sciences | ||
| Article 1, Volume 16, Issue 1, 2009, Pages 93-104 PDF (0 K) | ||
| Author | ||
| Amer M. Kado | ||
| Abstract | ||
| This paper presents a computer analysis of the eddy current brake in electric machines. It presents a formula for the braking force when the actual width of the pole is considered. This formula is suitable for both thin and thick discs and may be employed for a wide range of working speed. For this purpose, a mathematical analysis of the problem is presented together with the formula achieved for the braking force. The brake is first represented by a mathematical model based on certain assumptions and then the braking force is obtained as a result of solving a field problem. The problem is simplified to a one-dimensional problem, where a solution for the magnetic vector potential is obtained, and by employing Lorentz force equation, a formula for the braking force of the nth harmonic order is obtained.KEYWORDS: Electric Machines, Eddy Currents, Braking Force, Electromagnetic Fields, Poisson’s equation. | ||
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