Minimization of EMF Harmonics and Cogging Torque for a Medium Speed RFPM Wind Turbine Generator

Aysel Akgemci; Reza Zeinali; Ozan Keysan

doi:10.1109/ICRERA.2018.8566734

Minimization of EMF Harmonics and Cogging Torque for a Medium Speed RFPM Wind Turbine Generator

Aysel Akgemci, Reza Zeinali, Ozan Keysan

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

3 Citations (Scopus)

Abstract

There are several methods to reduce EMF harmonics and cogging torque in permanent magnet generators. This paper investigates the influence of magnet embrace optimization and magnet skewing on the performance of a 2.5 MW 400 rpm radial flux permanent magnet (RFPM) wind turbine generator. The medium speed RFPM generator is designed by applying cost optimization to the analytical model and the design is verified using finite element analysis (FEA). The design is modified so that both the induced EMF harmonics and the cogging torque is minimized. According to FEM simulations, optimizing the magnet embrace results in reduction of the total harmonic distortion (THD) of the induced EMF to 1.5 percent whereas step skewing of the magnets reduces the cogging torque below 1 percent of the rated value. Skewing also introduces further improvements on the THD of induced voltage.

Original language	English
Title of host publication	7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018
Publisher	Institute of Electrical and Electronics Engineers
Pages	342-347
Number of pages	6
ISBN (Electronic)	978-1-5386-5982-3
DOIs	https://doi.org/10.1109/ICRERA.2018.8566734
Publication status	Published - 10 Dec 2018
Externally published	Yes
Event	7th International Conference on Renewable Energy Research and Applications, ICRERA 2018 - Paris, France Duration: 14 Oct 2018 → 17 Oct 2018 Conference number: 7

Conference

Conference	7th International Conference on Renewable Energy Research and Applications, ICRERA 2018
Abbreviated title	ICRERA
Country/Territory	France
City	Paris
Period	14/10/18 → 17/10/18

Keywords

Cogging torque
FEM simulation
Harmonic reduction
Medium speed radial flux permanent magnet synchronous generator
Skewing

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/ICRERA.2018.8566734

Cite this

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title = "Minimization of EMF Harmonics and Cogging Torque for a Medium Speed RFPM Wind Turbine Generator",

abstract = "There are several methods to reduce EMF harmonics and cogging torque in permanent magnet generators. This paper investigates the influence of magnet embrace optimization and magnet skewing on the performance of a 2.5 MW 400 rpm radial flux permanent magnet (RFPM) wind turbine generator. The medium speed RFPM generator is designed by applying cost optimization to the analytical model and the design is verified using finite element analysis (FEA). The design is modified so that both the induced EMF harmonics and the cogging torque is minimized. According to FEM simulations, optimizing the magnet embrace results in reduction of the total harmonic distortion (THD) of the induced EMF to 1.5 percent whereas step skewing of the magnets reduces the cogging torque below 1 percent of the rated value. Skewing also introduces further improvements on the THD of induced voltage.",

keywords = "Cogging torque, FEM simulation, Harmonic reduction, Medium speed radial flux permanent magnet synchronous generator, Skewing",

author = "Aysel Akgemci and Reza Zeinali and Ozan Keysan",

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year = "2018",

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day = "10",

doi = "10.1109/ICRERA.2018.8566734",

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Akgemci, A, Zeinali, R & Keysan, O 2018, Minimization of EMF Harmonics and Cogging Torque for a Medium Speed RFPM Wind Turbine Generator. in 7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018., 8566734, Institute of Electrical and Electronics Engineers, pp. 342-347, 7th International Conference on Renewable Energy Research and Applications, ICRERA 2018, Paris, France, 14/10/18. https://doi.org/10.1109/ICRERA.2018.8566734

Minimization of EMF Harmonics and Cogging Torque for a Medium Speed RFPM Wind Turbine Generator. / Akgemci, Aysel; Zeinali, Reza; Keysan, Ozan.
7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018. Institute of Electrical and Electronics Engineers, 2018. p. 342-347 8566734.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Minimization of EMF Harmonics and Cogging Torque for a Medium Speed RFPM Wind Turbine Generator

AU - Akgemci, Aysel

AU - Zeinali, Reza

AU - Keysan, Ozan

N1 - Conference code: 7

PY - 2018/12/10

Y1 - 2018/12/10

N2 - There are several methods to reduce EMF harmonics and cogging torque in permanent magnet generators. This paper investigates the influence of magnet embrace optimization and magnet skewing on the performance of a 2.5 MW 400 rpm radial flux permanent magnet (RFPM) wind turbine generator. The medium speed RFPM generator is designed by applying cost optimization to the analytical model and the design is verified using finite element analysis (FEA). The design is modified so that both the induced EMF harmonics and the cogging torque is minimized. According to FEM simulations, optimizing the magnet embrace results in reduction of the total harmonic distortion (THD) of the induced EMF to 1.5 percent whereas step skewing of the magnets reduces the cogging torque below 1 percent of the rated value. Skewing also introduces further improvements on the THD of induced voltage.

AB - There are several methods to reduce EMF harmonics and cogging torque in permanent magnet generators. This paper investigates the influence of magnet embrace optimization and magnet skewing on the performance of a 2.5 MW 400 rpm radial flux permanent magnet (RFPM) wind turbine generator. The medium speed RFPM generator is designed by applying cost optimization to the analytical model and the design is verified using finite element analysis (FEA). The design is modified so that both the induced EMF harmonics and the cogging torque is minimized. According to FEM simulations, optimizing the magnet embrace results in reduction of the total harmonic distortion (THD) of the induced EMF to 1.5 percent whereas step skewing of the magnets reduces the cogging torque below 1 percent of the rated value. Skewing also introduces further improvements on the THD of induced voltage.

KW - Cogging torque

KW - FEM simulation

KW - Harmonic reduction

KW - Medium speed radial flux permanent magnet synchronous generator

KW - Skewing

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BT - 7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018

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Minimization of EMF Harmonics and Cogging Torque for a Medium Speed RFPM Wind Turbine Generator

Abstract

Conference

Keywords

UN SDGs

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