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Skin effect and armature reaction are the two major factors that effectively influence the performance of eddy current brake. Although many analytical solutions consider the armature reaction, skin effect has a significant impact on the torque-speed characteristics of the brake as the most important performance factor. This study presents an analytical equation for the torque-speed characteristics of an eddy current brake with cylindrical rotor taking into account both skin effect and armature reaction. This equation is valid over a wide range of speeds, therefore critical speed and maximum torque of the brake can be computed precisely. The presented model is sufficiently fast, accurate and flexible for design of a cylindrical eddy current brake. The predicted results are validated by the experimental results.
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Sharif et al. (2012) studied this question.
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