Design and Control of a Permanent Magnet RotLin Motor for New Foldable Photovoltaic Units

Yu Zou and Ka Wai Eric Cheng
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Yu Zou: Power Electronics Research Center, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
Ka Wai Eric Cheng: Power Electronics Research Center, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China

Energies, 2019, vol. 12, issue 10, 1-18

Abstract: In this study, a new permanent magnet rotary-linear (RotLin) motor is proposed for foldable photovoltaic units. Firstly, the mechanical structure, operation principles and magnetic circuits of the motor are introduced, and a design procedure elaborated the parameters calculation in the linear part and the rotary part. Finite element method (FEM) is used to analyze the magnetic field of the motor, and linear force outputs and torque outputs are obtained. Secondly, a control scheme is designed for the prototype of the motor including the position control and the speed control. The deformation on the mover and the magnetic coupling effect between the linear part and the rotational part are discussed. Finally, experimental results show that this motor can simultaneously realize a linear movement with continuous rotation. The linear poisoning accuracy can achieve 0.4 µm and the angular speed can be controlled with steady errors less than 3 rpm, proving the effectiveness of the proposed RotLin motor.

Keywords: RotLin motor; FEM; control scheme; positioning accuracy; solar tracking (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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