Advances in construction techniques of AC induction motors preparation for super-premium efficiency levels

Malinowski, John; McCormick, J.; Dunn, Kameron

doi:10.1109/pcicon.2003.1242616

Cited by 8 publications

(7 citation statements)

References 2 publications

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“…This is of semiclosed trapezoidal shape and is most commonly used in contrast with the open type, as its use limits the magnetization current and reduces vibrations at teeth, and thus, a quieter operation can be achieved. 19 On the basis of typical commercial values for some parameters as shown in Table A2 in the Appendix, the geometry of the stator can be completed using the rest of classical design theory, eg, Upadhyay. 23…”

Section: Proposed Spim Design Approach 241 Stator Design Approachmentioning

confidence: 99%

“…For example, new research and production techniques allow construction of SPIMs with die-cast copper rotors, allowing for even higher efficiency levels and greater longevity. 19 On the basis of the above, it is revealed that there is a need not only for a simple, reliable, and cost-effective SPIM design procedure but also for a "multifeature" selection approach that can be easily followed to any application at the early stage of the design. Thus, the aim of this paper is to investigate and propose a practical, effective, and multicriteria approach as a decision aid tool, dealing with the appropriate design and selection of a certain SPIM topology among others, which meets the basic industrial standards regarding the motor's frame sizes on one hand and satisfies certain specification criteria on the other.…”

Section: Introductionmentioning

confidence: 99%

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Design and manufacturing of a single-phase induction motor: A decision aid tool approach

Karnavas

Chasiotis

2017

Int Trans Electr Energ Syst

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Summary This paper presents a simple, practical, and effective design, analysis, and selection approach of a capacitor‐run single phase induction motor as a manufacturing aid tool at the early stage of the design. The standard industrial motor frame sizes as well as the current design trends of larger lengths and smaller diameters—which are not likely presented in literature—are taken into account. At first, to verify the proposed approach, a sample single phase induction motor design is obtained regarding certain requirements, based mainly on the classic output coefficient concept. Then, numerous simulations over a large number of candidate motor topologies are conducted. This series of investigations is performed initially with respect to (1) certain operational industrial criteria, (2) the number of stator and rotor slots, and (3) the rotor cage material. After the relevant results are presented and commented, a selection strategy of an appropriate design is also proposed. Also, the effect of the running capacitor value is examined. It is seen that the total design and selection procedure are verified very satisfactorily. Finally, useful conclusions from a manufacturer's point of view are also extracted, dealing with important operational characteristics of the motor, such as power factor, winding currents phase shift, total losses, starting/rated torque ratio, efficiency, and other.

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Section: Proposed Spim Design Approach 241 Stator Design Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and manufacturing of a single-phase induction motor: A decision aid tool approach

Karnavas

Chasiotis

2017

Int Trans Electr Energ Syst

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“…If no fins are fitted to the end-rings then this can reduce windage losses although it can affect the air circulation in the end-region and hence affect the thermal performance. The core loss has been steadily reducing due to use of improved steels [28]. The stray load loss can be reduced by operation at a lower slip -an indirect result of lower rotor resistance.…”

Section: Induction Motor Loss Characteristics and Influencesmentioning

confidence: 99%

“…Iron loss reduction was addressed in [28]. Care has to be taken when modifying and redesigning a machine because reducing the size can increase flux levels and losses.…”

Section: B Reduction In Iron Lossesmentioning

confidence: 99%

A Review of the Methods for Improving the Efficiency of Drive Motors to Meet IE4 Efficiency Standards

Dorrell¹

2014

Journal of Power Electronics

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High efficiency standards are slowly being introduced with IE3 efficiency levels shortly becoming compulsory in many countries; IE4 efficiency levels being developed for future implementation. In this paper a review is carried out of the IE 60034-30 standard which covers standard line-start induction motors. Some design techniques that can be used to increase efficiency in order to meet the IE4 standards are discussed. This standard is now being replaced by the IE60034-30-1 standard which extends to other line start motors and also IE 60034-30-2 is being introduced to cover variable speed drives in order to address developing technology. The conclusion is that IE4 standards are obtainable but careful design is needed to reach this. Examples from the literature are given.

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“…This Scheme classifies induction motors into three efficiency bands, from "EFF3" (lowest) to "EFF1" (highest). This agreement should stimulate the manufacturers in the development of new ranges of high efficiency motors that requires an accurate motor design, the adoption of new materials and innovative technologies [3].…”

Section: Introductionmentioning

confidence: 97%

Influence of Soft Magnetic Materials Application to Squirrel Cage Induction Motor Design and Performance

Karnavas

Chasiotis

2017

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Abstract.Most of the electrical machines design studies found in literature lie on the concept that the design under investigation (and optimization) focuses mainly on the geometrical aspects of the machine and thus takes into account only a certain ferromagnetic material (i.e. iron) for its parts. These studies, give little or no information about the influence of material alternatives on the same (and optimized) design. From a manufacturers' point of view though, this information is crucial especially nowadays that there are a lot of commercially available materials in the market. In this context, this paper presents the results of a research project in the design stage of an energy efficient three phase squirrel cage induction motor (SCIM), by investigating the effects of several soft magnetic materials (adopted for its stator and/or its rotor parts) on multiple quantities of primary concern such as: efficiency, power factor, output torque, losses, weight and cost. After a brief proposed design procedure, a total of twenty-two different materials from recent manufacturers' data were examined. Also, the main electromagnetic analysis was performed through commercial analysis software. Simple ranking methods are also proposed here for different application areas and the results obtained are then thoroughly discussed and commented.

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Advances in construction techniques of AC induction motors preparation for super-premium efficiency levels

Cited by 8 publications

References 2 publications

Design and manufacturing of a single-phase induction motor: A decision aid tool approach

Design and manufacturing of a single-phase induction motor: A decision aid tool approach

A Review of the Methods for Improving the Efficiency of Drive Motors to Meet IE4 Efficiency Standards

Influence of Soft Magnetic Materials Application to Squirrel Cage Induction Motor Design and Performance

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