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Characteristics of a novel moving magnet linear motor for linear compressor
journal contribution
posted on 2023-06-09, 16:14 authored by Hanying Jiang, Kun LiangKun Liang, ZHAOHUA LILinear compressors consisting of linear motor and suspension spring have been widely used for cryogenic and refrigeration systems. This paper characterises a novel moving magnet linear motor for linear compressor including magnet spring, motor force, resonant frequency and overall performance. First, the static force of the linear motor was modelled using FEA (Finite Element Analysis) method for various excitation current and armature positions. A specific test rig was built to measure the motor force and to verify the results from FEA simulation. The magnet spring was found to be 1.3?N/mm for peak stroke. The magnet spring effect was taken account into the calculation of the resonant frequency, which mainly depends on mechanical spring and gas spring. The linear compressor using the proposed linear motor and flexure springs was instrumented for measurements of the resonant frequency at different pressure ratios and strokes. Good agreement was shown between the calculated and measured resonant frequencies for various conditions. The high efficiency novel magnet linear motor is very attractive for linear compressor.
History
Publication status
- Published
File Version
- Accepted version
Journal
Mechanical Systems and Signal ProcessingISSN
0888-3270Publisher
ElsevierExternal DOI
Volume
121Page range
828-840Department affiliated with
- Engineering and Design Publications
Research groups affiliated with
- Dynamics, Control and Vehicle Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-12-13First Open Access (FOA) Date
2019-12-12First Compliant Deposit (FCD) Date
2018-12-12Usage metrics
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