Turbogenerator End-Winding Leakage Inductance Calculation Using a 3-D Analytical Approach Based on the Solution of Neumann Integrals

Ban, Drago; Žarko, Damir; Mandić, Ivan

doi:10.1109/tec.2004.837300

Cited by 76 publications

(34 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore it is essential that an accurate estimation of these parameters be made at each instant the physical dimensions of a machine are adjusted in the design process. Pure analytical calculations alone do not yield the required accuracy [13] and therefore FE analysis is required. This is particularly important if a high proportion of inductance is contributed by the end winding portion, mainly due to low stack-length to outer diameter ratio [14].…”

Section: Design Of a Stator For A High-speed Turbo-generator With Fixmentioning

confidence: 99%

Design of a Stator for a High-Speed Turbo-Generator With Fixed Permanent Magnet Rotor Radius and Volt–Ampere Constraints

Fernando

Arumugam

Gerada

2018

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

Abstract-This paper investigates high-speed surface PM machine design for portable turbo-generator applications. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. The basis of this paper is to design and select the stator. The stator designs are populated by different slot/pole combinations, winding arrangements and over a range of possible stack lengths. However, the design is constrained by physical diameter, stack length and electrical volt-ampere constraints. A large number of preliminary machine designs do not satisfy the specified turbo-generator torque/speed requirements under the given volt-ampere constraints and therefore it is ineffective to perform Finite Element analysis on all preliminary design variations. In order to establish the feasibility of a machine design to fulfill the specified turbo-generator torque/speed requirements, the concept of inductance-limits is presented and then linked with stator design parameters. By application of this analysis strategy, a confined optimal set of stator designs are obtained and are subjected to detailed finite element simulations. A final machine design is selected and fabricated. Experimental results are presented for the validation of the final machine design.

show abstract

Section: Design Of a Stator For A High-speed Turbo-generator With Fixmentioning

confidence: 99%

Design of a Stator for a High-Speed Turbo-Generator With Fixed Permanent Magnet Rotor Radius and Volt–Ampere Constraints

Fernando

Arumugam

Gerada

2018

IEEE Trans. Energy Convers.

View full text Add to dashboard Cite

show abstract

“…The values of reactances were estimated by the approach described in [6] and [7]. For calculations of no-load curve, shortcircuit curve and reactances a standard one-pole 2D model can be used.…”

Section: Finite-element Modelingmentioning

confidence: 99%

Two-speed Synchronous Generator for Special Purposes

Čelić-Baran¹,

Pužar²,

Berberović³

2024

RE&PQJ

View full text Add to dashboard Cite

Abstract. This paper deals with basic performances of a design of a two-pole three-phase 40MVA synchronous generator. The generator is designed to test three-phase and single-phase high power transformers aimed to work within 50 Hz and 60 Hz network frequency. This means that the generator will operate at two nominal speeds, at 3000 rpm and 3600 rpm, with nominal power of 40 Mvar induction load when rating with symmetrical three-phase load. The additional requirements relate to constant operation with two-phase 25 MVA load and single-phase 13.5 MVA load, since for testing single-phase and special transformers phase connection you like will be used. In the course of designing, special attention was paid to correct dimensioning of the damper rotor winding as well as to the geometry of stator windings, rotor and air gap, which in the end will produce minimum voltage wave distortion, i.e. generator voltage wave shape with harmonious content less than 1% (as it was demanded).

show abstract

“…In the end region, magnetic field distribution is always 3‐D, so the analysis of the end region is more complicated than that of the air‐gap. In the literature, Newman integral and numerical methods, such as finite element method, have been used to calculate the leakage inductances . The leakage inductances are very small in comparison with the magnetizing inductance (less than 5%).…”

Section: Caclulation Of Machine Inductancesmentioning

confidence: 99%

New approach for the modeling of induction machines operating under unbalanced power system

Kouchih

Boumalha

Tadjine

et al. 2016

Int. Trans. Electr. Energ. Syst.

View full text Add to dashboard Cite

In this paper, a new analytical method for the modeling of the star connected induction motors operating under unbalanced power supply is developed using coupled circuits theory. This method takes into account the increase of the common point voltage during unbalanced supply conditions. The equations, which describe the state model as well as the calculation of machine inductances, are presented. The calculation of inductances is based on the magnetomotive force distribution through the machine air-gap. The advantages of the proposed method are multiple. The space and time harmonics can be taken into account. It can also be extended for the analysis of faulty induction machines. Magnetic saturation, skin effect, skewed rotor, and slotting effects can be integrated in the calculation of the machine inductances by introducing some techniques to the basic coupled circuit theory. This method reduces strongly the time simulation because of the simple numerical representation of the inductances and their derivatives. The obtained results show good agreement with other results, which have been obtained using finite elements method and symmetrical components approach. The particularity of this work is that it takes in consideration the increase of the common point voltage during unbalanced supply conditions. Simulation results show the consistency and the applicability of the proposed method for the modeling of induction motors operating under unbalanced power system.

show abstract

Turbogenerator End-Winding Leakage Inductance Calculation Using a 3-D Analytical Approach Based on the Solution of Neumann Integrals

Cited by 76 publications

References 8 publications

Design of a Stator for a High-Speed Turbo-Generator With Fixed Permanent Magnet Rotor Radius and Volt–Ampere Constraints

Design of a Stator for a High-Speed Turbo-Generator With Fixed Permanent Magnet Rotor Radius and Volt–Ampere Constraints

Two-speed Synchronous Generator for Special Purposes

New approach for the modeling of induction machines operating under unbalanced power system

Contact Info

Product

Resources

About