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, M.; Tommaso, A. O. Di; Genduso, F.; Miceli, R.; Galluzzo, G. Ricco

doi:10.1109/tia.2018.2857474

Cited by 20 publications

(8 citation statements)

References 36 publications

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“…It can also be noted that the end connections are arranged with groups of 1 or 2 coils for each phase, and the number of slots per pole per phase is equal to 1 + 1/2, which gives a fractional slot configuration of the winding. The general design guidelines used in this work can be found in [53][54][55]. Among the relevant number of approaches adopted by the scientific community to study the phenomenon of cogging torque, from FEM to analytical models [42][43][44][45], the cogging torque effects are here analyzed by using a FEM approach.…”

Section: Basic Ipmsm Structure and Fem Analysismentioning

confidence: 99%

A Cogging Torque Minimization Procedure for Interior Permanent Magnet Synchronous Motors Based on a Progressive Modification of the Rotor Lamination Geometry

Caruso¹,

Tommaso²,

Miceli³

et al. 2022

Energies

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This article describes a simple cogging torque minimization procedure for interior permanent magnet synchronous machines (IPMSMs), consisting of a progressive modification of the rotor lamination geometry. This procedure can be generalized for the main topologies of PMSM, independently of the number of stator slots or the location of the permanent magnets. For this purpose, a basic IPMSM structure is analyzed by means of the FEM (finite element method) approach, and then, several other IPMSM geometries, obtained by adequately modifying the rotor lamination geometry of the basic IPMSM model without changing its stator configuration, are proposed and discussed. The trends of the cogging torque generated by each model are computed and compared. From this comparison, it is demonstrated that, by simply acting on the shape of the rotor lamination and by choosing the optimized pattern, the cogging torque components can be theoretically canceled.

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Section: Basic Ipmsm Structure and Fem Analysismentioning

confidence: 99%

A Cogging Torque Minimization Procedure for Interior Permanent Magnet Synchronous Motors Based on a Progressive Modification of the Rotor Lamination Geometry

Caruso¹,

Tommaso²,

Miceli³

et al. 2022

Energies

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show abstract

“…However, the exact determination of σ 0 , especially for multiphase asymmetrical machines, could be very troublesome [11,17,18]. Recently, the authors have proposed a general procedure that simplifies its exact computation by adopting the Goerges polygon [19,20]. Generally, σ 0 is defined as follows [11,18,[20][21][22][23][24]:…”

Section: The Differential Leakage Factor In M-phase Machine Windingsmentioning

confidence: 99%

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

et al. 2020

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This work provides an investigation based on a fast estimation of the degree of unbalance (D.U.%) and the differential leakage factor (σ0) of multiphase electrical machine windings. This analysis is carried out by exploring almost 5000 combinations in terms of number of slots, pole pairs, phases and layers. The variability of the leakage factor is examined for each condition, defining an optimal region for its minimization. As a result, an extended mapping is carried out for both the degree of unbalance and the leakage factor, providing a useful tool during the early design stage of winding configurations for multiphase electric machines, even with slight asymmetries. The results obtained from this investigation are validated through finite element analysis and demonstrate that the differential leakage factor can be significantly reduced by adopting winding configurations with slight asymmetries, which also represent a valuable alternative in the electrical machine design.

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“…As well known, there are different study about the Selective Harmonic Elimination (SHE) or Selective Harmonic Mitigation (SHM) reported in literature, also adopted in many fields of applications [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. In [25]- [27], an interesting cataloguing on the kind of mathematical algorithms based on Staircase Voltage Waveform as switching pattern has been introduced.…”

Section: Introductionmentioning

confidence: 99%

Innovative Computational Approach to Harmonic Mitigation for Seven-level Cascaded H-Bridge Inverters

Schettino

Çolak

Tommaso

et al. 2020

2020 Fifteenth International Conference on Ecological Vehicles and Renewable Energies (EVER)

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Low frequency modulation strategies are a good solution to increase the energy conversion efficiency in high power applications. The paper is devoted to presents an innovative way to low order harmonics mitigation for seven-level Cascaded H-Bridge Inverters. In particular, this approach is based on the mitigation of selected harmonics without solve non-linear equations for an extended range of the fundamental amplitude. In fact, in real-time operation to evaluate the control angles the polynomial equations have been identified. Through circuit simulation analysis in MatLab/PLECS environment, the effectiveness of the harmonic mitigation method has been tested and compared with theoretical results.

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

Cited by 20 publications

References 36 publications

A Cogging Torque Minimization Procedure for Interior Permanent Magnet Synchronous Motors Based on a Progressive Modification of the Rotor Lamination Geometry

A Cogging Torque Minimization Procedure for Interior Permanent Magnet Synchronous Motors Based on a Progressive Modification of the Rotor Lamination Geometry

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

Innovative Computational Approach to Harmonic Mitigation for Seven-level Cascaded H-Bridge Inverters

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