In this paper, we present the force ripple reduction method for iron-cored permanent magnet linear synchronous motors (PMLSMs), using position-dependent force constant. The iron-cored PMLSMs generate magnified force ripple due to magnetic saliency, which makes system vibrations and deteriorates the closed-loop performance. To suppress such motor force ripple, we propose the control method considering not only geometry-driven ripple (GDR) but also current-driven ripple (CDR) which is investigated in detail how it can be generated in PMLSMs. We also present the identification method for both current-driven force (CDF) and geometry-driven ripple in simple experimental setup without additional equipment, and it is validated experimentally with NRMSE (peak-to-peak normalized root mean square error) of 4.74 % and 1.01 % for CDF and GDR, respectively. Using the identified motor parameters, the force ripple is reduced by 91.5 % and 86.9 % in RMS and peak-to-peak value, without sacrificing the motor thrust and with small additional power consumption.
|Title of host publication||2022 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 2022|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||5|
|Publication status||Published - 2022|
|Event||2022 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 2022 - Sapporo, Japan|
Duration: 2022 Jul 11 → 2022 Jul 15
|Name||IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM|
|Conference||2022 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 2022|
|Period||22/7/11 → 22/7/15|
Bibliographical noteFunding Information:
This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1C1C100801311), partially by Korea Institute for Advancement of Technology (KIAT) grant funded by the Korea government (MOTIE) (P0012744, The Competency Development Program for Industry Specialist), and also in part by the Yonsei University Research Fund under Grant 2020-22-0098.
© 2022 IEEE.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Control and Systems Engineering
- Computer Science Applications