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Andrew Lapthorn   Dr.  University Lecturer 
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Andrew Lapthorn published an article in June 2018.
Top co-authors See all
M.P. Staines

56 shared publications

HTS Team, Industrial Research Ltd, Lower Hutt New Zealand 5010 ()

P. S. Bodger

22 shared publications

University of Canterbury

Wade Enright

9 shared publications

Viva Technical Solutions, Christchurch

Zhiyang Jin

7 shared publications

Electrical and Computer Engineering, University of Canterbury, 2496 Christchurch New Zealand 8020 ()

Shreejan Pandey

2 shared publications

University of Canterbury

13
Publications
16
Reads
0
Downloads
2
Citations
Publication Record
Distribution of Articles published per year 
(2013 - 2018)
Total number of journals
published in
 
11
 
Publications See all
Article 0 Reads 1 Citation Multiobjective Design Optimization Using Dual-Level Response Surface Methodology and Booth's Algorithm for Permanent Mag... Pedram Asef, Ramon Bargallo Perpina, M. R. Barzegaran, Andre... Published: 01 June 2018
IEEE Transactions on Energy Conversion, doi: 10.1109/tec.2017.2777397
DOI See at publisher website
Article 0 Reads 0 Citations Keeping Cool Under Pressure: Dielectric Strength of Sheet Insulation in Boiling Liquid Nitrogen Zhiyang Jin, Andrew Lapthorn, Mike Staines Published: 01 June 2018
IEEE Transactions on Appiled Superconductivity, doi: 10.1109/tasc.2018.2813527
DOI See at publisher website
Article 2 Reads 0 Citations Load identification of different Halbach-array topologies on permanent magnet synchronous generators using the coupled f... Pedram Asef, Ramon Bargallo Perpina, M.R Barzegaran, Andrew ... Published: 01 January 2018
Electric Power Systems Research, doi: 10.1016/j.epsr.2017.08.041
DOI See at publisher website
Article 0 Reads 0 Citations A COMPARATIVE STUDY OF QUASI-FEA TECHNIQUE ON IRON LOSSES PREDICTION FOR PERMANENT MAGNET SYNCHRONOUS MACHINES Pedram Asef, Ramon Bargallo Perpina, M. R. Barzegaran, Jiann... Published: 01 January 2018
Progress In Electromagnetics Research C, doi: 10.2528/pierc17102702
DOI See at publisher website
Article 0 Reads 0 Citations Iron Loss Prediction Using Modified IEM-Formula during the Field Weakening for Permanent Magnet Synchronous Machines Pedram Asef, Ramon Bargallo, Andrew Lapthorn Published: 05 December 2017
Machines, doi: 10.3390/machines5040030
DOI See at publisher website ABS Show/hide abstract
During field weakening operation time (FWOT), the total iron loss rises and affects the accuracy of loss prediction and efficiency, especially if a large range of FWOT exists due to a large voltage drop that was rooted from the resistance of the used material. Iron loss prediction is widely employed in investigations for a fast electrical machine analysis using 2D finite element analysis (FEA). This paper proposes harmonic loss analytically by a steady-state equivalent circuit with a novel procedure. Consideration of skin effects and iron saturation are utilized in order to examine the accuracy through the relative error distribution in the frequency domain of each model from 50 to 700 Hz. Additionally, this comparative study presents a torque-frequency-field density calculation over each single term of the modified institute of electrical machines formula (IEM-Formula). The proposed analytical calculation is performed using 2D FEA for a classic and modified IEM-Formula along with experimental verifications on a surface-mounted permanent magnet synchronous generator (PMSG) for a wind generation application.
PREPRINT 2 Reads 0 Citations Iron Loss Prediction Using Modified IEM-Formula during the Flux Weakening for Permanent Magnet Synchronous Machines Pedram Asef, Ramon Bargallo, Andrew Lapthorn Published: 24 October 2017
ENGINEERING, doi: 10.20944/preprints201710.0155.v1
DOI See at publisher website ABS Show/hide abstract
During flux weakening operation time (FWOT), the total iron loss rises and affects the accuracy of loss prediction and efficiency especially if a large range of FWOT exists. Iron loss prediction is widely employed in investigations for a fast electrical machine analysis using 2-D FEA. This paper studies harmonic loss analytically by a steady-state equivalent circuit. Consideration of skin effects and iron saturation are utilized in order to examine the accuracy through the relative error distribution in the frequency domain of each model from 50 to 700 Hz. Additionally, this comparative study presents a torque-frequency-flux density calculation over each single term of the modified IEM-formula. The analytical calculation is performed using 2-D FEA for a classic and modified IEM-formula along with experimental verifications on a surface-mounted PMSG for a wind generation application.
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