Preliminary Electromagnetic Sizing of Axial-Flux Induction Machines

Bitsi, Konstantina; Beniakar, Minos E.; Wallmark, Oskar; Bosga, S.G.

doi:10.1109/icem49940.2020.9270719

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…In addition, an inversely proportional relationship between the magnetic flux density in the air-gap B δ and the number of poles is evident. This relation can be formulated as follows [30]…”

Section: Torque Capability In Linear and Saturation Regionmentioning

confidence: 99%

Design Aspects and Performance Evaluation of Pole-Phase Changing Induction Machines

2022

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Pole-phase changing induction machines (IMs) offer the capability to extend the torque-speed envelope compared to their fixed pole-phase counterparts. Dynamic pole-changing can achieve higher torque levels at lower speeds, utilizing higher pole numbers, and extended flux-weakening range with lower pole-number operations. This paper investigates the design impact on the optimum pole-phase changing behavior and respective split of the operating region to different pole-phase operations. Additionally, the improvement in terms of the overall torque per ampere capability and efficiency is illustrated. For the purposes of the analysis, two different IMs with wound independently-controlled stator coils (WICSC) and different original pole numbers are evaluated in an effort to quantify the extent of the benefits of pole-phase changing. These geometries correspond to machines that were originally designed with 2- and 6 magnetic poles, respectively. It is shown that, in the case of the original 2-pole WICSC machine, shifting to a higher pole number is notably beneficial in terms of efficiency in a significant part of the operating region, whereas in the original 6-pole, both higher and lower pole numbers significantly enhance the overall torque capability and efficiency. The results highlight the notable benefits of pole-phase changing IMs and offer deep insight towards the derivation of standard design guidelines for these machines.

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Section: Torque Capability In Linear and Saturation Regionmentioning

confidence: 99%

Design Aspects and Performance Evaluation of Pole-Phase Changing Induction Machines

2022

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“…References [11][12][13][14] are some recent and readily available articles that have accomplished objectives that are similar to that of this present treatise, making use of CAD tools like Visual Basic Artificial Neural Networks, finite element etc. However, none of them actually went on to derive relevant customizable functions that are executable by MATLAB nonlinear solvers.…”

Section: Introductionmentioning

confidence: 99%

Derived Functions for MATLAB Non-linear Solvers – an optimal Stator Slot Design Stopgap

Omogbai

2023

JERR

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In the three-phase squirrel cage induction motor (SCIM), like other rotating electromechanical machines, the active length of the stator windings lies in the slots. The proper dimensioning of the slots is therefore critical to the design of both the windings and the stator core, so as to attain a high performing machine. The preliminary stage of the SCIM design, if well done, facilitates the refinement and optimization stages; serving as a good take-off point for that final state of the art design. The aim of this article isn’t to come up with a novel optimization method for the SCIM, but to provide another way of obtaining an initial stator slot design template, from where proper design refinement/optimization techniques could obtain very good starting values and be facilitated. Therefore, an attempt is being made here to derive relevant design functions that could be fed into the algorithms of various non-linear solvers such as the Genetic Algorithm (GA), to output the main stator slot dimensions for the SCIM. The final designed SCIM obtained from implementing the derived equations, when compared with the appropriate reference datasheets, showed only minor deviations from the expected performance indices – an outcome deemed satisfactory for a preliminary design attempt. These initial dimensions may in practice be subjected to the appropriate refinement. Depending on the target performance requirement of the motor.

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The effect of stator slot number and pole number on motor performance in double-sided axial flux induction motors for electric vehicles

2022

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Preliminary Electromagnetic Sizing of Axial-Flux Induction Machines

Cited by 8 publications

References 20 publications

Design Aspects and Performance Evaluation of Pole-Phase Changing Induction Machines

Design Aspects and Performance Evaluation of Pole-Phase Changing Induction Machines

Derived Functions for MATLAB Non-linear Solvers – an optimal Stator Slot Design Stopgap

The effect of stator slot number and pole number on motor performance in double-sided axial flux induction motors for electric vehicles

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