Iron Loss Analysis of Doubly Salient Brushless DC Generators

Zhang, Zhuoran; Yu, Liangyao; Sun, Li; Qian, Le; Huang, Xuzhen

doi:10.1109/tie.2014.2349875

Cited by 82 publications

(32 citation statements)

References 17 publications

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“…Generally, Iron loss in the steel core can be estimated by adding the hysteresis loss P h , eddy current loss P e and anomalous loss P a in conventional method as [19]:…”

Section: A Iron Loss Analysismentioning

confidence: 99%

Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine

Zhang

McLoone

Cao

et al. 2017

IEEE Trans. Energy Convers.

111

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Abstract--High speed permanent magnet synchronous machines (PMSMs) have attracted much attention due to their high power density, high efficiency, and compact size for directdrive applications. However, the consequent power loss density is high, and hence heat dissipation is a major technical challenge. This is particularly the case for high-speed operation. In this paper, a MW level high speed PMSM is designed and its electromagnetic and mechanical power losses comprehensively investigated using finite element analysis. The transient machine demagnetization performance is studied, and a composite rotor structure is proposed to improve machine anti-demagnetization capability. The temperature distribution of the proposed high speed PMSM is also analyzed using a fluid-thermal coupling method with calculated power loss. Experiments conducted on a prototype of the high speed PMSM demonstrate the effectiveness of the numerical models developed and validate the results obtained.Index Terms--Demagnetization, finite element method, high speed PM machine, magnetic field, power loss, thermal analysis.

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“…Generally, Iron loss in the steel core can be estimated by adding the hysteresis loss P h , eddy current loss P e and anomalous loss P a in conventional method as [19]:…”

Section: A Iron Loss Analysismentioning

confidence: 99%

Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine

Zhang

McLoone

Cao

et al. 2017

IEEE Trans. Energy Convers.

111

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“…where i is the current in the winding, and R is the resistance of the windings; The iron core loss consists of hysteresis loss and eddy-current loss [28,29].…”

Section: Loss Analysis Of Motormentioning

confidence: 99%

System Electromagnetic Loss Analysis and Temperature Field Estimate of a Magnetically Suspended Motor

Ren¹,

Le²,

Han³

2017

PIER M

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Abstract-A magnetically suspended permanent-magnet motor (MSPMM) system mainly consists of magnetic bearings (MBs), a motor and a rotor assembly. This paper focuses on the system analysis of an MSPMM used for a vacuum turbo-molecular pump (TMP). To ensure a normal levitation and rotation, characteristics of electromagnetic field of MBs and motor are studied. For MSPMM, loss is the main heat source. To ensure the safe and steady operation of MSPMM, loss of the MB and motor are calculated and analyzed by finite element method (FEM). For thermal aspects, temperature field is estimated. Based on these analyses, the system performance can be predictive. Considering the poor heat dissipation conditions in a vacuum environment, this system analysis including loss and temperature field is of great value for MSPMM design.

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“…Bianchi doesn't consider higher time-harmonic content. As recent as 2014 and 2015, Wei [31], Wang [32] and Zhang [33] have presented interesting insights on the harmonic content of electric machines. Wei does consider a preliminary study of the time-and spatial-harmonic content.…”

Section: A Literaturementioning

confidence: 99%

Time- and Spatial-Harmonic Content in Synchronous Electrical Machines

2016

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The use of power electronics has led to a growing importance of higher time-harmonic content in electrical machines. To gain insight in phenomena related to these higher harmonics, such as noise and losses, a good understanding of the magnetic field's harmonic content is mandatory. Moreover, the development of fast and accurate, harmonic-based, analytical models requires a qualitative knowledge of the machine's time-and spatial-harmonic content. Although the harmonic content of electric machines is an extensively studied topic, previous publications tended to focus on one type of synchronous machines and often didn't consider higher time-harmonic orders. This work complements the existing theory by providing a more general approach, thereby covering machines and operating points that weren't covered until now. It considers both three-phase and multi-phase machines with an odd number of phases. The winding distribution can either have an integer or a fractional number of slots per pole and per phase and higher time-harmonic content is regarded as well. Note that saturation is neglected. Despite its general validity, the work succeeds at providing one simple equation to determine the machine's time-and spatial-harmonic content. Moreover, the work also extensively discusses the physical causes of the harmonic content. The combination of this general validity, the simple result and the insight in the physics makes that this work is a strong tool to both study harmonic-related phenomena in electric machines and to develop harmonic-based analytical models.

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Iron Loss Analysis of Doubly Salient Brushless DC Generators

Cited by 82 publications

References 17 publications

Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine

Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine

System Electromagnetic Loss Analysis and Temperature Field Estimate of a Magnetically Suspended Motor

Time- and Spatial-Harmonic Content in Synchronous Electrical Machines

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