Numerical Simulation on Electromagnetic Energy Harvester Oscillated by Speed Ripple of AC Motors

Masayuki Kato ()
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Masayuki Kato: Department of Electrical and Electronics Systems, Faculty of Engineering, Ibaraki University, Hitachi 3168511, Japan

Energies, 2023, vol. 16, issue 2, 1-11

Abstract: The suppression of torque ripples in an interior permanent magnet synchronous motor (IPMSM) is essential to improve its efficiency and responsiveness. Here, we report on the development of an electromagnetic energy harvester incorporated into an IPMSM to suppress its torque ripples. The proposed harvester is driven to oscillations by the speed ripple of the AC motor. We derived the motion and circuit equations for the motor and the harvester according to Euler–Lagrange equations. We discussed the principle of electrical power generation and used MATLAB/Simulink numerical simulations to investigate the dynamic behavior of the proposed harvester. Our findings revealed that the active Coriolis force unnecessarily reduces the motor’s original torque, leading to unsuccessful power generation. Nevertheless, our results demonstrated that the reactive Coriolis force successfully suppresses the motor torque ripple.

Keywords: AC motors; electromagnetic energy harvester; Coriolis force; torque ripple; speed ripple (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: 2023
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