Rotor Eddy Current Loss in Single-Phase Permanent Magnet Brushless DC Motor

Chen, Y.; Zhu, Z. Q.; Howe, D.; Gliemann, J.H.

doi:10.1109/07ias.2007.87

Cited by 10 publications

(3 citation statements)

References 9 publications

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“…The eddy-current losses are mainly produced by the carrier harmonics of the PWM inverter [49]. A single-phase PM brushless DC motor supplied by a 180 • square current waveform presents more eddy-current losses than when it is supplied with only the fundamental component of current [50]. In [51], by considering the carrier harmonics of PMW inverters, it was shown that the PM eddy-current losses in the concentrated winding motor were larger than the distributed winding motor.…”

Section: Supply and Controlmentioning

confidence: 99%

Permanent-Magnet Eddy-Current Losses: A Global Revision of Calculation and Analysis

Ouamara

Dubas

2019

MCA

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Eddy-current analysis is an important research field. This phenomenon occurs in multiple areas and has several applications: electromagnetic braking, repulsive effects, levitation, etc. Thereby, this paper is limited to eddy-current study in rotating electrical machines. In the design process, if the permanent-magnet (PM) loss calculation is very important, the overheating due to eddy-currents must be taken into account. The content of this paper includes sources, calculation methods, reduction techniques, and thermal analysis of PM eddy-current losses. This review aims to act as a guide for the reader to learn about the different aspects and points to consider in studying the eddy-current.

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Section: Supply and Controlmentioning

confidence: 99%

Permanent-Magnet Eddy-Current Losses: A Global Revision of Calculation and Analysis

Ouamara

Dubas

2019

MCA

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“…The permanent magnet motor is divided into surface mounted PM motor and interior PM motor. Due to high speed of the flywheel, a tremendous centrifugal force is not only bore by the PM, but also a mass of rotor loss [2]. Flywheel and the PM motor are sealed in a vacuum to reduce the air friction loss, but the heat in rotor cannot conducts away.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the rotor loss in a high speed permanent magnet motor for flywheel energy storage system

Wang

Qinglei

Wang

et al. 2015

2015 18th International Conference on Electrical Machines and Systems (ICEMS)

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The ways to reduce rotor loss of a permanent magnet (PM) motor with 200kW/9000r/min for flywheel energy storage system (FESS) is discussed in this paper. Several methods are proposed to reduce the rotor loss by optimizing the structure of rotor. The air friction loss on the surface of rotor can be decreased rapidly when pressure in the sleeve is very small. So the rotor mostly works in a vacuum in high speed FESS. Due to the effect of time harmonics of stator current and space harmonics of air gap magnetic field, the loss in permanent magnets is considerable and leads to partial over-temperature. Thus the irreversible demagnetization of permanent magnets is occurred with poor cooling condition. The impact of rotor structure and silicon steel sheet thickness of rotor to the rotor loss are analyzed in the paper. The analysis and experimental results illustrate that there is the least rotor loss with the proposed rotor structures.

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“…A defining problem with single phase machines is the increase in rotor losses [2][3] due to the direct and inverse harmonic fields generated by the armature m.m.f. spatial distribution and temporal variation.…”

Section: Introductionmentioning

confidence: 99%

Single phase permanent-magnet generator with low armature reaction for induction heating gen sets

Caricchi

Maradei

Donato

et al. 2008

2008 18th International Conference on Electrical Machines

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The paper presents a single phase, slotless axial flux permanent magnet synchronous machine for induction heating gen sets. A full scale prototype of the machine (110 kVA, 400 Hz, 690 A) has been designed and subsequently analyzed through F.E.M. analysis (FEA). Induced current distributions in the permanent magnets (PMs) and in the rotors are also calculated through FEA and it is seen that the resulting losses are kept at bay due to the large air gap. This key feature allows the machine to achieve a high rated efficiency (94%). The prototype has also been built and experimental tests confirm the results obtained by FEA.

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Rotor Eddy Current Loss in Single-Phase Permanent Magnet Brushless DC Motor

Cited by 10 publications

References 9 publications

Permanent-Magnet Eddy-Current Losses: A Global Revision of Calculation and Analysis

Permanent-Magnet Eddy-Current Losses: A Global Revision of Calculation and Analysis

Analysis of the rotor loss in a high speed permanent magnet motor for flywheel energy storage system

Single phase permanent-magnet generator with low armature reaction for induction heating gen sets

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