Abstract
In this article, a novel electric machine having permanent magnets (PMs) in both stator and rotor parts, and fed with dc biased phase current is proposed. The innovative characteristic of the proposed machine is that it contains multiple field excitation sources including stator PM, rotor PM. and dc component in the phase current. Thus, the exciting field can be greatly strengthened. What is more, the exciting field is flexible and adjustable thanks to the variable dc component. Therefore, the proposed machine is expected to exhibit high torque density, wide constant power operation range. This article first illustrates the basic operation principle, slot/pole combination equation, and the topology. Then, performance of six machines with different slot/pole combination is analyzed. After that, effects of several key design parameters on machine performance are researched theoretically and by finite-element method and genetic algorithm. And neural network is applied to verify the correctness of torque and torque ripple. Finally, the electromagnetic performance including flux density, back electromotive force, torque quality of an optimized machine is illustrated.
Original language | English |
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Article number | 9442866 |
Pages (from-to) | 4595-4605 |
Number of pages | 11 |
Journal | IEEE Transactions on Industry Applications |
Volume | 57 |
Issue number | 5 |
DOIs | |
State | Published - Sep 1 2021 |
Bibliographical note
Publisher Copyright:© 1972-2012 IEEE.
Funding
Manuscript received June 30, 2020; revised December 8, 2020, March 7, 2021, and May 16, 2021; accepted May 17, 2021. Date of publication May 27, 2021; date of current version September 16, 2021. Paper 2020-EMC-0892.R3, presented at 2019 IEEE International Electric Machines and Drives Conference, San Diego, CA, USA, May 11.15, and approved for publication in the IEEE Transactions on Industry Applications by the Electric Machines Committee of the IEEE Industry Applications Society. This work was supported in part by the National Natural Science Foundation of China (NSFC) under Project Nos. 51807153, and 51737010, in part by Shaanxi Natural Science Foundation (2020JQ-051), and in part by the Fundamental Research Funds for the Central Universities (xzy012020069). (Corresponding author: Kuankuan Yan.) Shaofeng Jia, Kuankuan Yan, Deliang Liang, and Jinjun Liu are with the State Key Laboratory of Electrical Insulation and Power Equipment, Shaanxi Key Laboratory of Smart Grid, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China (e-mail: [email protected]; [email protected]; [email protected]; [email protected]).
Funders | Funder number |
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Natural Science Foundation of Shanghai | 2020JQ-051 |
National Natural Science Foundation of China (NSFC) | 51807153, 51737010 |
Fundamental Research Funds for the Central Universities | xzy012020069 |
Keywords
- DC biased current
- Vernier machine
- finite-element method (FEM)
- permanent magnet (PM) machine
- stator and rotor dual PM
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering