Energy Conversion in DC Excited Flux-Switching Machines

Tang, Yang; Paulides, Jjh Johannes; Lomonova, E. A.

doi:10.1109/tmag.2014.2325405

Cited by 24 publications

(6 citation statements)

References 5 publications

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“…Higher torque and power density are the key features of three-phase FEFSM, having relatively simpler structure [9]. As in FEFSM, all the active parts are present on the stator, thus providing easy cooling mechanism, while at the same time, field excitation provides the controllable flux with the variable flux capabilities [10,11]. In summary, outer rotor has edge over inner rotor providing advantages to completely eliminate drive belts, mechanical transmission, and differential gears.…”

Section: Introductionmentioning

confidence: 99%

Outer rotor wound field flux switching machine for In‐wheel direct drive application

Ahmad

Khan

Ali

et al. 2019

IET Electric Power Applications

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Nowadays the flux switching machines offer pivotal role in high speed applications. The flux sources (field excitation coil and armature winding or permanent magnet) are confined to the stator leaving rotor completely passive, and thus making the flux switching machine (FSM) more suitable for industrial applications. This paper emphasizes salient rotor pole and nonoverlapping windings embedded in electrical machine design possess some pertinent features such as reduced copper losses, low-cost, and usage in high speed applications. The proposed design is analyzed for coil test analysis and flux linkage and torque. On the basis of the analysis performed, it is clear that 12-slot/13-pole has low cogging torque, high flux linkage, and maximum torque, compared with other topologies of outer rotor field excitation FSM. A deterministic optimization technique is adopted to enhance the performance of 12-slot/13-pole design. Further, finite element analysis (FEA) results are verified through Global Reluctance Network (GRN) methodology, which show close resemblance with error less than 1.2%. Hence, it validates the proposed design for outer rotor field excitation FSM direct drive application. The proposed design for hybrid electric vehicle torque characteristic is compared with existing interior permanent magnet synchronous machine (IPMSM) and 6slot/7-pole wound field flux switching machine (WFFSM).

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Section: Introductionmentioning

confidence: 99%

Outer rotor wound field flux switching machine for In‐wheel direct drive application

Ahmad

Khan

Ali

et al. 2019

IET Electric Power Applications

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“…1 saturation, the contribution of these inductances to the eletromagnetic torque, T em,tot , is derived using the virtual work method, [7] T em,…”

Section: Torque Ripple Analysismentioning

confidence: 99%

Torque Ripple Reduction for 12-Stator/10-Rotor-Pole Variable Flux Reluctance Machines by Rotor Skewing or Rotor Teeth Non-Uniformity

et al. 2017

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• A submitted manuscript is the version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User Agreement: www.tue.nl/taverne Take down policy If you believe that this document breaches copyright please contact us at:openaccess@tue.nl providing details and we will investigate your claim. Variable flux reluctance machines are interesting candidates to substitute permanent-magnet synchronous machines in many applications. However, they suffer from large torque ripple. In this paper two methods, stepped rotor skewing and rotor teeth non-uniformity are researched to reduce the torque ripple of 12/10 (stator/rotor pole ratio) variable flux reluctance machines. Based on semi-analytic results and finite element simulations, the effectiveness of these two methods is validated in both non-saturated and saturated machines.

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“…Obtained from [38, 39], the torque can be preserved by producing the same magnetomotive force (MMF) with two machine phases in the case of a phase open‐circuit fault. Where the MMF produced by three‐phase currents with (4) is shown in (5)

\begin{matrix} 1em4pt \\ \begin{aligned} I_{a s} & = I \cos false(ω t + ϕ false), \\ I_{b s} & = I \cos false(ω t + ϕ - 2 π / 3 false), \\ I_{c s} & = I \cos false(ω t + ϕ + 2 π / 3 false), \end{aligned} \end{matrix}

\begin{matrix} 1em4pt \\ \begin{aligned} MMF & = N I_{a s} + a N I_{b s} + a^{2} N I_{c s} = \frac{3}{2} N I {normale}^{j θ} \\ = \frac{3}{2} N I (\cos θ + j \sin θ), where a = 1 ∠ 120^{\circ}, \end{aligned} \end{matrix}

N is the effective number of stator turns per phase and a is the space angle.…”

Section: Fault‐tolerant Drive System During Open Circuitmentioning

confidence: 99%

Fault‐tolerant electric drive and space‐phasor modulation of flux‐switching permanent magnet machine for aerospace application

Wang

Aleksandrov

Tang

et al. 2017

IET Electric Power Applications

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This study investigates how to improve the fault tolerance or availability of an electrical drive containing a three‐phase 12 stator teeth/10 rotor poles (12/10) the flux‐switching permanent magnet machine. In this respect, space‐vector modulation and space‐phasor modulation will be analysed in this type of machine for control scheme design under three‐phase operation. While for safety critical applications, availability requires that during faults, such as loss of one inverter phase leg or open circuit of one machine phase winding, the electrical drive system remains partly operational. Therefore, initial research is given in this study on the implementation of control algorithms that drives the machine under normal condition and preserves the electromagnetic torque under phase open‐circuit faults.

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Energy Conversion in DC Excited Flux-Switching Machines

Cited by 24 publications

References 5 publications

Outer rotor wound field flux switching machine for In‐wheel direct drive application

Outer rotor wound field flux switching machine for In‐wheel direct drive application

Torque Ripple Reduction for 12-Stator/10-Rotor-Pole Variable Flux Reluctance Machines by Rotor Skewing or Rotor Teeth Non-Uniformity

Fault‐tolerant electric drive and space‐phasor modulation of flux‐switching permanent magnet machine for aerospace application

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