Transient 3-D FEM Computation of Eddy-Current Losses in the Rotor of a Claw-Pole Alternator

Kaehler, Christian; Henneberger, G.

doi:10.1109/tmag.2004.825469

Cited by 47 publications

(18 citation statements)

References 4 publications

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“…Compared with the electric excitation brushless claw-pole alternator, the HEBCA has a higher air-gap flux density and power density. (2) The hybrid excitation brushless claw-pole alternator generates the same air gap flux density with a smaller excitation current than the electric excitation claw-pole alternator, thus reduces the excitation loss and improves the efficiency of the alternator. (3) The excitation winding is fixed on the excitation bracket, thus brushes and slip-ring is eliminated and the operation reliability is improved.…”

Section: Resultsmentioning

confidence: 99%

“…To reduce the computation time, the FEA is performed on the domain covering two poles, as shown in (1) When the excitation current is 0A, the air gap of the electric excitation claw pole alternator is 0T, while the average magnetic density of the hybrid excitation claw pole alternator is 0.18T. (2) When the excitation current is positive, the air gap flux density of the HEBCA is more than the EECA's air gap flux density. With the excitation current increasing, the maximum value of average air gap flux density of HEBCA is 0.51T, while the maximum value of average air gap flux density of EECA is 0.41T.…”

Section: Fea-based Investigation Of Magnetic Field Regulationmentioning

confidence: 99%

“…However, the existing of brushes and commutator significantly restrict their further develop-ment [1][2][3] . The permanent magnet claw-pole alternator (PMCA) eliminates the field winding, brush and loop, and thus is simpler and more reliable.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

3-D Finite Element Investigation of Flux Regulation Performance of a Novel Hybrid Excitation Brushless Claw-Pole Alternator

Qiao

Wang

Zhu³

2012

AMR

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Abstract. In consideration of low power density of electric excitation claw-pole synchronous alternator (EECA) and some difficulties in magnetic field regulation of permanent magnet claw-pole synchronous alternator (PMCA), a novel hybrid excitation brushless claw-pole alternator (HEBCA) is proposed in this paper. Its structure and field control principle are described. Three dimensional finite element analysis is used to obtain the no-load magnetic field distributions and field control capability under different field currents. The result shows that the flux of the prototype machine can be adjusted over a wide range with a relatively low field current.

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Section: Resultsmentioning

confidence: 99%

Section: Fea-based Investigation Of Magnetic Field Regulationmentioning

confidence: 99%

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3-D Finite Element Investigation of Flux Regulation Performance of a Novel Hybrid Excitation Brushless Claw-Pole Alternator

Qiao

Wang

Zhu³

2012

AMR

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“…[4]. The eddy current losses in the rotor are calculated with a transient-nonlinear solver where a number of attempts are made in order to validate the results when considering the simulation time, convergence speed and the accuracy of the results.…”

Section: A Model Setupmentioning

confidence: 99%

Design and experimental evaluation of a compact hybrid excitation claw-pole rotor

Hagstedt

Reinap

Ottosson

et al. 2012

2012 XXth International Conference on Electrical Machines

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This paper focuses on the electromagnetic design and experimental evaluation of an electrically magnetized permanent magnet assisted synchronous machine (EMPMSM). The work is carried out on an existing Lundell alternator where the design of the rotor facilitates features of field strengthening and weakening operation possible including the efficiency improvement. A relatively simple and compact slip ring less rotor with EM and PM excitation is proposed, analysed and tested. A series of 3D FE transient computations are made in order to estimate efficiency at different operation points and with different types of rotor cores: solid iron and powder core. A rotor with the solid iron core is built and tested including different aspects of torque and power loss production. Index Terms-Design of electrical machines, 3D finite element transient analysis, synchronous machines, soft magnetic materials:

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“…However, the existing of brushes and commutator significantly restrict their further develop-ment [1][2][3] .…”

Section: Introductionmentioning

confidence: 99%

3-D Finite Element Investigation of Flux Regulation Performance of a Novel Hybrid Excitation Brushless Claw-Pole Alternator

Qiao

Shang

et al. 2015

MATEC Web of Conferences

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Transient 3-D FEM Computation of Eddy-Current Losses in the Rotor of a Claw-Pole Alternator

Cited by 47 publications

References 4 publications

3-D Finite Element Investigation of Flux Regulation Performance of a Novel Hybrid Excitation Brushless Claw-Pole Alternator

3-D Finite Element Investigation of Flux Regulation Performance of a Novel Hybrid Excitation Brushless Claw-Pole Alternator

Design and experimental evaluation of a compact hybrid excitation claw-pole rotor

3-D Finite Element Investigation of Flux Regulation Performance of a Novel Hybrid Excitation Brushless Claw-Pole Alternator

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