Study of winding method to reduce stray loss and stator core vibration of synchronous machine

IET Electric Power Applications

Miceli

et al. 2018

The aim of this study is to present a new, accurate, and user-friendly software procedure for the analysis and rapid design of rotating induction machine windings, considering both the electric and the magnetic specifications of the machine itself. This procedure is a valid aid for quick first stage design without the necessity of using finite element method (FEM)-based design procedures. FEM can be used in a second design phase in order to refine the first stage results. The design procedure is hereafter outlined and some examples show its capability.

Section: Introductionmentioning

confidence: 99%

Computer‐aided analysis and design procedure for rotating induction machine magnetic circuits and windings

Caruso

IET Electric Power Applications

Miceli

et al. 2018

“…Therefore, an exact knowledge of the differential leakage factor (from which average torque, parasitic torques and forces, copper and eddy current losses can be determined [17], [19]) is a significant aid to design also fractional-slot single and double layer windings with low torque ripple, from symmetrical to asymmetrical configurations (at least if they have a low degree of unbalance) [19], [20], even in the case of the so called "dead coil windings" (dead coil windings contain one or more empty slots in single-layer or non wound coils in double-layer windings). Regarding asymmetrical windings, the formula for the determination of differential leakage factors becomes more complex with respect to symmetrical ones and only few authors dealt with this particular topic [21], [22].…”

Section: Introductionmentioning

confidence: 99%

A General Mathematical Formulation for the Determination of Differential Leakage Factors in Electrical Machines With Symmetrical and Asymmetrical Full or Dead-Coil Multiphase Windings

Caruso

IEEE Trans. on Ind. Applicat.

Genduso

et al. 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 deadcoil windings of electrical machines. The method can be applied to all multi-phase windings and considers Görges 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 values of the differential leakage factor, as well as its average value and the time trend. The proposed method, which does not require infinite series, is validated by means of several examples in order to practically demonstrate the effectiveness and the easiness of application of this procedure.

A novel improved matlab-based software for the electric and magnetic analysis and design of rotating electrical machines

2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)

Genduso

Miceli

2015

The aim of this paper is to present a software for the analysis and design of windings of rotating electrical machines, considering both the electric and the magnetic specifications on the machine. The considered machines are induction motors (IM) and PM synchronous motors (PMSM). The software accounts for the case of buried magnets (IPMSM), but with some limits, because the calculations require a much more detailed analysis regarding the magnetic circuit. However, this initial limitation of the software, that will be removed in a later version, does not constitute a major limitation as confirmed by the examples presented in this paper