Search results for "Leakage factor"

showing 5 items of 5 documents

A General Mathematical Formulation for the Determination of Differential Leakage Factors in Electrical Machines with Symmetrical and Asymmetrical Ful…

2018

This paper presents a simple and general mathematical formulation for the determination of the differential leakage factor for both symmetrical and asymmetrical full and dead-coil windings of electrical machines. The method can be applied to all multiphase windings and considers Gorges polygons in conjunction with masses geometry in order to find an easy and affordable way to compute the differential leakage factor, avoiding the adoption of traditional methods that refer to the Ossanna's infinite series, which has to be obviously truncated under the bound of a predetermined accuracy. Moreover, the method described in this paper allows the easy determination of both the minimum and maximum v…

010302 applied physicsComputer scienceconcentrated winding020208 electrical & electronic engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciTopology01 natural sciencesdifferential leakage factorIndustrial and Manufacturing EngineeringHarmonic analysismoment of inertiaControl and Systems EngineeringElectromagnetic coil0103 physical sciences0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringAsymmetrical windingdead-coil windingGörges polygonmultiphase windingsLeakage (electronics)
researchProduct

Determination of differential leakage factors in electrical machines with non-symmetrical full and dead-coil windings

2017

In this paper Gorges polygons are used in conjunction with masses geometry to find an easy and affordable way to compute the differential leakage factor of non symmetrical full and dead coil winding. By following the traditional way, the use of the Ossanna's infinite series which has to be obviously truncated under the bound of a predetermined accuracy is mandatory. In the presented method no infinite series is instead required. An example is then shown and discussed to demonstrate practically the effectiveness of the proposed method.

010302 applied physicsConcentrated windingSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesDifferential leakage factorwindingsmoment of inertiaControl theoryElectromagnetic coil0103 physical sciencesunsymmetrical windingGörges polygonLeakage (electronics)Mathematics
researchProduct

An exact method for the determination of differential leakage factors in electrical machines with non-symmetrical windings

2016

An exact and simple method for the determination of differential leakage factors in polyphase ac electrical machines with non-symmetrical windings is presented in this paper. The method relies on the properties of Gorges polygons that are used to transform an infinite series expressing the differential leakage factor into a finite sum in order to significantly simplify the calculations. Some examples are shown and discussed in order to practically demonstrate the effectiveness of the proposed method.

010302 applied physicsElectronic Optical and Magnetic Material020208 electrical & electronic engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciTopology01 natural sciencesElectronic mailElectronic Optical and Magnetic MaterialsDifferential leakage factorHarmonic analysiswindingDistribution functionmoment of inertiaElectromagnetic coil0103 physical sciences0202 electrical engineering electronic engineering information engineeringPolyphase systemGraphical modelnon-symmetrical windingElectrical and Electronic EngineeringGörges polygonLeakage (electronics)Mathematics
researchProduct

Differential Leakage Factor in Electrical Machines Equipped with Asymmetrical Multiphase Windings: a General Investigation

2019

This paper presents an investigation in terms of degree of unbalance and leakage factor of electrical machines equipped with multiphase windings. The analysis has been carried out through 4800 combinations between slots/poles/phases/layers, analyzing the variability of the leakage factor for each condition and determining the optimal region for its minimization. The obtained results demonstrate that the leakage factor could be considerably reduced with the adoption of slightly asymmetrical windings, which represent a favorable option during the early design stage of electrical machines.

Asymmetrical winding; Degree of unbalance; Electrical machines; Leakage factor; Symmetrical winding010302 applied physicsMaterials scienceDesign stage020208 electrical & electronic engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciLeakage factorSymmetrical winding01 natural sciencesElectrical machineControl theoryElectromagnetic coilElectrical machinesDegree of unbalance0103 physical sciences0202 electrical engineering electronic engineering information engineeringMinificationAsymmetrical windingLeakage (electronics)2019 Fourteenth International Conference on Ecological Vehicles and Renewable Energies (EVER)
researchProduct

A General Investigation on the Differential Leakage Factor for Symmetrical and Asymmetrical Multiphase Winding Design

2020

This work provides an investigation based on a fast estimation of the degree of unbalance (D.U.%) and the differential leakage factor (&sigma

Control and Optimizationunbalance degreeEnergy Engineering and Power Technologysymmetrical windings02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciMachine designTopology01 natural scienceslcsh:TechnologyComputer Science::Hardware ArchitecturePhysics::Popular Physics0103 physical sciences0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringEngineering (miscellaneous)MathematicsLeakage (electronics)010302 applied physicselectrical machinesDesign stageRenewable Energy Sustainability and the Environmentlcsh:T020208 electrical & electronic engineeringasymmetrical windingswinding designdifferential leakage factorFinite element methodElectromagnetic coilAsymmetrical windings; Differential leakage factor; Electrical machines; Symmetrical windings; Unbalance degree; Winding designMinificationEnergy (miscellaneous)Energies
researchProduct