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

• Published in: IEEE transactions on magnetics Vol. 53; no. 11; pp. 1 - 7
• Main Authors: Boff, Ben Hur B., Zanatta, Ana P., Dorrell, David G., Eckert, Paulo R.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.11.2017; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: <italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">d - and <italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">q -axis inductances; Actuators; Computational modeling; Control methods; dual-Halbach array; electromagnetic actuator; Electromagnetics; end effects; Identification methods; linear tubular machine; Magnetic fields; Magnetism; Parameter identification; Permanent magnets; Stators; Topology
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2017.2709080

This paper presents an analysis of the directand 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 selfand mutual inductances. The synchronous parameters, i.e., dand 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.