ANALYSIS OF THE HARMONIC ORDER AFFECTING THE EDDY CURRENT BRAKING FORCE IN ELECTRICAL

• Main Author: Amer M. Kado
• Format: Article
• Language: English
• Published: Tikrit University 2013-05-01
• Series: Tikrit Journal of Engineering Sciences
• Subjects: Electric Machines, Eddy Currents, Braking Force, Electromagnetic Fields, Poisson’s equation.
• Online Access: http://www.tj-es.com/ojs/index.php/tjes/article/view/212

<p>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.</p>