This paper comprehensively investigates the electromagnetic performance of 3-phase, 12-slot, and 8-pole switched reluctance machines (SRMs) with different winding configurations, i.e., double/single layer, short pitched (concentrated), fully (distributed). These SRMs are supplied by sinewave currents so that a conventional three-phase converter can be employed, leading to behavior which is akin synchronous reluctance-type machines. Comparisons in terms static dynamic performances such as d-...

This paper investigates the influence of mutual fluxes (inductances) on resultant torque in three-phase conventional switched-reluctance machine (CSRM) and mutually coupled SRM (MCSRM) using frozen permeability (FP) method. Under saturation conditions, FP method allows accurately separating torques due to self-flux flux, hence quantifying their contributions generation. Then, appropriate current waveforms (unipolar or bipolar, square wave sinewave) can be established maximize output torques....

This study investigates the influence of rotor topologies and winding configurations on electromagnetic performance three‐phase synchronous reluctance machines (SynRM) with different slot/pole number combinations, e.g. 12‐slot/4‐pole 12‐slot/8‐pole. Transversally laminated rotors both round flux barrier angled have been considered, as well doubly salient (DS) that used in switched machines. Both concentrated distributed are accounted for, i.e. single‐layer double‐layer conventional mutually...

Compared to nonmodular machines, modular topologies become increasingly attractive due their simplified manufacture process, better fault-tolerant capability, and potentially reduced material consumption. In order maintain or even enhance the machine performance while achieving high novel modular, single-layer winding switched reluctance machines (SRMs) with different pole numbers are proposed, which supplied by rectangular wave current conduction angles. The influences of number flux gap...

This paper investigates the influence of conduction angles on performances two 3-phase 12-slot/8-pole short-pitched switched reluctance machines (SRMs): single-layer SRM with conventional winding (SL-CSRM) and mutually coupled (SL-MCSRM). Both unipolar bipolar excitations are employed for SRMs different such as 120° elec., 180° 240° 360° elec. Their flux distributions, self- mutual-flux linkages, inductances analyzed, followed by a performance comparison in terms on-load torque, average...

This paper reviews the performances of some newly developed reluctance machines with different winding configurations, excitation methods, stator and rotor structures, slot/pole number combinations. Both double layer conventional (DLC-), mutually-coupled (DLMC), single (SLC-), mutuallycoupled (SLMC-), as well fully-pitched (FP) configurations have been considered for both rectangular wave sinewave excitations. Different conduction angles such unipolar 120° elec., unipolar/bipolar 180°...

This paper adopts simple analytical modeling to investigate the contribution of air-gap field harmonics torque production in some three-phase, 12-slot/8-pole doubly salient synchronous reluctance machines (DSRMs) with both conventional and mutually coupled winding configurations. The flux density has been calculated based on analytically obtained magnetomotive force permeance for double-layer single-layer DSRMs different Then, average ripple can be investigated validated by direct...

This paper comprehensively investigates 3-phase, 12-slot, and 8-pole switched reluctance machines (SRMs) with different winding configurations, e.g. double/single layer, short/fully pitched. Comparisons in terms of self- mutual inductances, on-load torques have been carried out using 2-D finite element method (FEM) for conventional mutually coupled, double layer motors as well fully-pitched single SRMs. The numerical results shown that the fully pitched machine (FPSRM) has highest inductance...

Prediction of iron loss in electrical machines (e-machines) is known to be a challenging task. The concept building factor (BF) account for the discrepancy between predicted and measured widely used. From literature, these BFs may need as high 1.5–2, i.e., up 100%, leading different impact on total losses every e-machine. To calibrate BF, modeling, testing are required. This article describes an extensive test campaign permanent magnet synchronous (PMSMs) at no-load with magnetized dummy...

With the continuous development of electric vehicles, power battery vehicles still faces challenge limited energy density and difficulty in achieving significant breakthroughs short term. However, use regenerative braking technology can greatly improve its utilization efficiency, increase vehicle's range, alleviate shortcomings vehicles. Therefore, this is gradually becoming a hot spot field vehicle technology. This project takes EV system as research object, based on structure related...

Organic polymers may present magnetic ordering, which attracts more attention of both theoretical and experimental researchers. From the structural analysis experiment, organic show diamond-like chain. Usually they are abstracted as mixed spin-1/2 1(or 2) Ising model, is given in Fig.1. J <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">i</sub> (J xmlns:xlink="http://www.w3.org/1999/xlink">b</sub> >0,...

Prediction of iron loss in electric machines is known to be a challenging task. The concept building factor account for discrepancy between predicted and measured widely used. This paper describes an extensive experimental campaign on permanent magnet synchronous at no-load, with magnetized dummy rotors. Several identified challenges may addressed by repeatabilty investigations combined temperature monitoring rotor core bearing temperatures. For accurate prediction impacted manufacturing...

Electrical machines' stator impregnation quality plays a significant role in ensuring optimal system performance by providing electrical insulation, thermal conductivity, and mechanical rigidity. Prior research has established that the DC test is viable non-invasive technique for discerning operational health attributes of machine components, but it time-consuming. This aims to investigate utilization impedance analysis derived control variables assessment tooth quality. The integrates two...

This paper provides a systematic approach to study the influence of electrical steel grade on electric vehicle traction motor performance. A permanent magnet assisted synchronous reluctance motor, an interior and induction are considered systematically quantify lamination thicknesses from 0.1 0.35mm, materials with 3% 6.5% silicon contents. Laminations low better candidates in terms peak continuous torque production for low-speed operations. 0.1mm - 10JNEX900 can achieve higher efficiency...

This paper proposes a design procedure of 48V in-wheel outer rotor motors for fully electric vehicles.A case study with outer-rotor surface-mounted permanent-magnet (SPMs) adopted in Nissan Leaf vehicle HYZEM urban drive cycle comprehensively illustrate simulations, motor and inverter designs, cooling thermal investigation.Comparison between air liquid methods is also included.In addition, different manufacturing processes the proposed SPM are considered during cost modelling strip layout...