Efficiency Improvement of a Double-Stator Permanent Magnet Vernier Machine for Direct-Drive Robotics

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Related Research Unit(s)

Detail(s)

Original languageEnglish
Title of host publication10th Anniversary ECCE 2018, IEEE ENERGY CONVERSION CONGRESS & EXPO
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4351-4358
ISBN (Electronic)9781479973125
ISBN (Print)9781479973118
Publication statusPublished - Sep 2018

Publication series

NameIEEE Energy Conversion Congress and Exposition
ISSN (Print)2329-3721

Conference

Title10th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2018)
PlaceUnited States
CityPortland
Period23 - 27 September 2018

Abstract

This paper proposes an efficiency improvement operation of a new double-stator permanent magnet vernier (DS-PMV) machine for direct-drive robotics. The high torque density, low power loss and low torque ripple are expected for the direct-drive machines in robotic application. First, the staggered-teeth and electric offset (ST-EO) modulations are artfully incorporated for the torque density improvement and torque ripple reduction. By this mean, the average torque increases from 27.1 Nm to 43.2 Nm, and torque ripple decreases from 21.7% to 3.5%. Second, the model predictive torque control (MPTC) with maximum torque per ampere (MTPA) operation is integrated for fast dynamic response and power loss reduction. In this way, under the rated load condition, the armature current decreases by 20% and the copper loss reduces by 36%. Also, the efficiency of the proposed DS-PMV machine is up to 86%, which can be a preferred alternative for the direct-drive robotic application. Finally, the demonstration is performed to verify the validation of the proposed high-efficiency DS-PMV machine.

Research Area(s)

  • Double-stator machine, permanent-magnet machine, vernier machine, direct drive, predictive control, MPTC, MTPA, electric offset, robotics, PREDICTIVE CURRENT CONTROL, BRUSHLESS MACHINE, MOTOR

Citation Format(s)

Efficiency Improvement of a Double-Stator Permanent Magnet Vernier Machine for Direct-Drive Robotics. / Yu, Jincheng; Liu, Chunhua; Luo, Yixiao; Wang, Xueqing; Wang, Zheng.

10th Anniversary ECCE 2018, IEEE ENERGY CONVERSION CONGRESS & EXPO. Institute of Electrical and Electronics Engineers Inc., 2018. p. 4351-4358 8558045 (IEEE Energy Conversion Congress and Exposition).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review