Influence of End Effects on Direct- and Quadrature-Axis Inductances in Linear Electromagnetic Actuators

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Journal Article
IEEE Transactions on Magnetics, 2017, 53 (11)
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© 2017 IEEE. This paper presents an analysis of the direct- and quadrature-axis inductances for linear tubular actuators with permanent magnet arrays, highlighting and featuring how they are affected by the end effects. A semi-analytical and an experimental analysis are performed to prove the influence of end effects on self- and mutual inductances. The synchronous parameters, i.e., d - and q -axis inductances of the actuator, are determined using a semi-analytical method and an experimental method. Once the synchronous parameters are all identified, high performance control methods (such as direct force control and vector control) may be implemented.
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