Performance comparison of IPMSM with distributed and concentrated windings

Kwon, Soon-O; Kim, Sŭng-il; Zhang, Peng; Hong, Jung-Pyo

doi:10.1109/ias.2006.256807

Cited by 31 publications

(11 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The inductance difference (L d -L q ) of the flux-concentrating structure motor, e.g. spoke-type PM and V-type motor, is normally smaller than in conventional IPM motors, such that some papers analyse their electromagnetic characteristics with no d-axis current or current phase angle (CPA) = 0° [23][24][25]. However, this paper analyses motor performance as a function of CPA as well as magnitude because d-axis current affects core loss as well as torque.…”

Section: Torque Analysis With the Magnet Shapesmentioning

confidence: 99%

Performance comparison of a spoke‐type PM motor with different permanent magnet shapes and the same magnet volume

Jun

Kwon

2017

IET Electric Power Applications

View full text Add to dashboard Cite

This study investigates the characteristics of a spoke-type permanent magnet (PM) motor with one of three magnet shapes, rectangular magnet (RM), trapezoidal magnet (TM), or inverted TM (ITM) in order to compare motor performance for the same magnet volume. The three magnet shapes vary in terms of upper thickness, lower thickness, and width of the magnet. Two-dimensional (2D) finite element method is performed to analyse torque, inductance, core loss, efficiency, and demagnetisation reliability. Advantages and disadvantages of each magnet shape are presented based on the analysis results. The ITM motor shows higher efficiency at its rated load due to the reduced core loss resulting from the decreased armature reaction field coupled with the increased magnetic reluctance circuit of the rotor near the airgap. However, the ITM motor shows lower maximum torque due to the reduced reluctance torque and demagnetisation reliability with a heavy over-current. ITM is thus suitable for applications that require low core loss with small starting torque, e.g. fans, TM is helpful for increasing maximum torque, and RM is appropriate for lowcost applications that require high demagnetisation reliability. Therefore, magnet shape should be carefully considered based on the required specifications of the motor application.

show abstract

Section: Torque Analysis With the Magnet Shapesmentioning

confidence: 99%

Performance comparison of a spoke‐type PM motor with different permanent magnet shapes and the same magnet volume

Jun

Kwon

2017

IET Electric Power Applications

View full text Add to dashboard Cite

show abstract

“…The first one is well known and is widely used as it enables having a stator magneto motive force (MMF) with low space harmonic content. However, it induces important end coil lengths and thus non-negligible stator Joule losses (Kwon et al, 2006). FSCW allows reducing the end parts and the copper Use of current sheet 1329 used but due to the coil spatial distribution, the harmonic content of the stator MMF and hence of the air gap flux density is higher than the one of DW.…”

Section: Introductionmentioning

confidence: 99%

Use of current sheet coupled to an analytical tool to analyze by FEM the harmonic content of armature winding ditribution

Marault

Tounzi

Gillon

et al. 2020

COMPEL

View full text Add to dashboard Cite

Purpose For a given rotor, the study of the impact of stator MMF from different winding distributions is usually carried out using analytical model under some simplifying hypotheses to limit time computation. To get more accurate results, finite element model is thus more suitable. However, testing different combinations of stator windings with the same rotor can be tedious when considering the stator slots. Indeed, this introduces mesh constraint, reluctance variation of the air gap and possibly taking into account of the connection between stator coils. To avoid this, a current sheet supplied such to represent the stator MMF and spread all around the inner slotless stator surface can be used. In addition, such an approach can be very useful to didactically assess the effect of each winding space harmonic on machine performance separately. The purpose of this paper is to use a current sheet coupled to an external analytical tool in order to easily test different windings or to quantify the effect of a given spatial harmonic of the winding. Design/methodology/approach In the proposed approach, the current sheet supply is obtained from an analytical tool that allows determining the spatiotemporal stator MMF of any winding considered. Moreover, stator teeth height is not modelled, and only the thickness of the stator yoke is considered along with the same air gap thickness. Results with the proposed approach are compared to the real stator modelling for two different winding configurations. Last, linear and non-linear magnetic material behaviours are investigated to validate the proposed approach in term of magnetic distribution. Findings For both studied cases, results in term of local and global physical quantities show good agreement between the real stator modelling and the proposed approach. Originality/value Current sheet is used with finite element model to study the inherent effect of different winding configurations on local and global physical quantities of an AC electrical machine. The proposed approach avoids the constraints in terms of stator slot geometry and electrical circuit definition. This is very useful to quickly test different winding configurations or to isolate a specific winding space harmonic to quantify its effect on the electrical performances. This cannot be performed using classical modelling as all space harmonics are taken into account.

show abstract

“…Several papers have compared the performance of concentrated and distributed windings applied to IPM motors, amongst which most have addressed the extra core and magnet losses as well as acoustic noise and vibration due to the additional Magneto Motive Force (MMF) harmonics associated with the concentrated windings, [17], [19], [20]. In [21]- [24], the torque-speed performance of a distributed winding is reported to be superior to a concentrated winding in both constant torque and constant power region, due to the higher saliency ratio.…”

Section: Introductionmentioning

confidence: 99%

On winding design of a high performance ferrite motor for traction application

Kimiabeigi

Widmer

2016

2016 XXII International Conference on Electrical Machines (ICEM)

View full text Add to dashboard Cite

Design of low cost traction motors with ferrite magnets needs to meet challenges such as minimizing the risk of demagnetization, and maximizing the torque and power density, via a suitable choice of rotor and stator winding topology and parameters. With regards to the stator, distributed and concentrated windings may have both advantages and disadvantages when considering manufacturing cost, slot fill factor, the contribution factor of reluctance torque and parasitic effects. Furthermore, the trend toward high speed operation of the traction motors may increase the AC loss effects in the windings, contributing to motor deficiencies and risk of thermal failure. In this paper, the performance of a high speed ferrite motor with a distributed and concentrated wound stator, and with regards to torque and power performance as well AC loss effects is assessed. The dynamic performance of a full scale prototype design based on a distributed aluminum wound stator is presented.

show abstract

Performance comparison of IPMSM with distributed and concentrated windings

Cited by 31 publications

References 3 publications

Performance comparison of a spoke‐type PM motor with different permanent magnet shapes and the same magnet volume

Performance comparison of a spoke‐type PM motor with different permanent magnet shapes and the same magnet volume

Use of current sheet coupled to an analytical tool to analyze by FEM the harmonic content of armature winding ditribution

On winding design of a high performance ferrite motor for traction application

Contact Info

Product

Resources

About