Comparative Study Between C-Core/E-Core SFPMM with Consequent Pole SFPMM

Umair

2021

Chin. J. Electr. Eng.

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Permanent magnet flux switching machines (PMFSM) have attracted significant research interest and are considered as competent candidates when higher torque density is primary requirement. However, conventional PMFSMs uses excessive rare earth PM volumes which ultimately increases machine the machine weight and PM cost. Moreover, the PMs extended at the stator yoke results in stator leakage flux which degrades the performance. To suppress the leakage flux and diminish the PM volume, the consequent pole PMFSM (CPPMFSM) with flux bridges and barriers encompassing partitioned circumferential and radial magnetized PMs is proposed, thereby ensuring an alternate magnetic path for the working harmonics which improves the modulation effect and flux distribution. Moreover, the influence of the rotor pole number on seven different rotor structures namely, curved rotor, trapezoidal rotor, wide rotor tooth tip, wide rotor base width, rectangular segmented and eccentric rotors are investigated based on the electromagnetic performance and stress distribution. Finite element analysis (FEA) reveals that the 12S-13P CPPMFSM with a wider rotor base offers comparatively better electromagnetic performance. Compare to the conventional PMFSM, the proposed CPPMFSM reduces the PM volume which minimizes the overall machine cost and weight, suppresses the torque ripples by 16.49%, diminishes total harmonic distortion (THD) by 35.24% and decreases cogging torque by 32.88%. Furthermore, the torque and power density are enhanced by 7.028% and 7.025% respectively.

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Section: Combination Of Stator Slot and Rotor Polesmentioning

confidence: 99%

Optimal rotor poles and structure for design of consequent pole permanent magnet flux switching machine

Umair

2021

Chin. J. Electr. Eng.

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“…Aforementioned designs are taken for validation purpose of the proposed design. Moreover, the proposed 12S‐13P E‐Core PMCPFSM is investigated in [1, 16, 24] and are considered here just for comparison with the new reduced 6S‐13P PMCPFSM.…”

Section: Electromagnetic Performance Analysis Of Initial Design Opmentioning

confidence: 99%

“…Moreover, FEA requires expensive software/hardware and large drive due to repeated iteration [11]. Therefore, author [1, 15, 16] suggest alternate analytical model for initial design phase.…”

Section: Introductionmentioning

confidence: 99%

Sub‐domain modelling and multi‐variable optimisation of partitioned PM consequent pole flux switching machines

IET Electric Power Applications

Sulaiman³

2020

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Permanent Magnet Flux Switching Machines (PMFSMs) enclose unique features of permanent magnet (PM) synchronous machine, direct current machine, and switch reluctance machine therefore, applicable for high speed brushless AC applications. However, conventional PMFSMs exhibits demerits of high PM volume )(VPM, high torque ripples )(Trip, low average torque )(Tavg, lower torque density )(Tden, power density )(Pden and leakage flux. In this paper, a new topology of 12S‐13P and 6S‐13P E‐Core PM Consequent Pole Flux Switching Machines (PMCPFSM) with flux barrier and partitioned PM is proposed that eliminate leakage flux, enhanced flux modulation effects through flux barriers and reduces the PM volume up to 46.53%. Moreover, due to non‐linear behaviour of PM and complex stator structure alternate analytical sub‐domain model is utilized for initial design and Multi‐Variable Geometric Optimization (MVGO) is opted to investigate influence of design parameters on electromagnetic performances such as Tavg, Trip, Tden and Pden. Analysis and comparison with the existing 12S‐10P E‐Core PMFSM, 6S‐10P E‐Core PMFSM, 6S‐10P C‐Core PMFSM and 12S‐14P C‐Core PMCPFSM reveals that proposed 6S‐13P PMCPFSM produced Tavg higher up to 88.8%, suppress Trip maximum up to 14.72% and offer 2.45 times Tden and Pden capabilities, when compared with the aforesaid state of the art.

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“…Despite of high PM usage, the narrow flux bridge saturates and provide short path to flux which upsurge flux circulation and cancellation that results an increase cogging torque, torque ripples, low torque density and power density and degrade electromagnetic performance. Concerning the PM usage, author in [9,10] reviewed reduce PM topologies PMFSMs, author in [11] introduces different E-Core and C-Core whereas comprehensive comparison is investigated in [12,13]. However, reduce PM topologies with C-Core and E-Core still suffer from stator leakage flux (as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Torque characteristics of high torque density partitioned PM consequent pole flux switching machines with flux barriers

Trans. Electr. Mach. Syst.

Sulaiman

et al. 2020

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