Design and optimization of segmented PM consequent pole hybrid excited flux switching machine for EV/HEV application

Ullah, Wasiq; Khan, Faisal; Umair, Muhammad

doi:10.30941/cestems.2020.00026

Cited by 10 publications

(9 citation statements)

References 18 publications

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“…The magnetic flux generated at the stator by the excitation sources has to flow through the stator's tooth, cross the air gap (A g ), enter rotor body (R c ) through the rotor tooth (W rt ), then exits through the next rotor tooth, crosses air gap again and enters into the second-stator tooth to link with the armature coil to complete its circuit. Due to the symmetrical structure of the machine, the magnetic flux in (Zhu et al, 2005;Ullah et al, 2020aUllah et al, , 2020bUllah et al, , 2020cUllah et al, , 2020d. In this paper, LPMNM is developed for 1/3rd machine as shown in Figure 4 to reduce the simulation time, drive storage and computational complexity.…”

Section: Operating Principlementioning

confidence: 99%

“…Flux switching permanent machine (FSPM) is an emerging class of electrical machines and has attracted widespread attention due to its essentially sinusoidal back electromotive force (back-EMF), better torque capability, high torque density, high efficiency and higher demagnetization tolerance in high-performance drive applications (Ullah et al, 2020a(Ullah et al, , 2020b(Ullah et al, , 2020c(Ullah et al, , 2020dSu et al, 2018;Ali et al, 2021;Jiang et al, 2020;Nobahari et al, 2020;Taras et al, 2016). However, economic issues are the main limitation of FSPMs, as their permanent magnet (PM) utilization is relatively weak.…”

Section: Introductionmentioning

confidence: 99%

“…Though the presence of armature excitation coil (AEC), field excitation coil (FEC) and PM on the stator makes its structure complex and costly in terms of labor charge but it significantly reduces the PM volume, which is a rare earth material and due to its frequent use it is vanishing day by day. Zhu and Cai (2019) discuss a comprehensive overview of HEFSM for EVs and HEVs, while (Ullah et al, 2020a(Ullah et al, , 2020b(Ullah et al, , 2020c(Ullah et al, , 2020d report various classifications of HEFSM for EV/HEV based on PM and FEC positions.…”

Section: Introductionmentioning

confidence: 99%

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Design and lumped parameter magnetic network model of hybrid excited consequent pole flux switching machine

Ullah

Khan

et al. 2022

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Purpose The purpose of this paper is to analyze electromagnetic performance and develop an analytical approach to find the suitable coil combination and no-load flux linkage of the proposed hybrid excited consequent pole flux switching machine (HECPFSM) while minimizing the drive storage and computational time which is the main problem in finite element analysis (FEA) tools. Design/methodology/approach First, a new HECPFSM based on conventional consequent pole flux switching permanent machine (FSPM) is proposed, and lumped parameter magnetic network model (LPMNM) is developed for the initial analysis like coil combination and no-load flux linkage. In LPMNM, all the parts of one-third machine are modeled which helps in reduction of drive storage, computational complexity and computational time without affecting the accuracy. Second, self and mutual inductance are calculated in the stator, and dq-axis inductance is calculated using park transformation in the rotor of the proposed machine. Furthermore, on-load performance analysis, like average torque, torque density and efficiency, is done by FEA. Findings The developed LPMNM is validated by FEA via JMAG v. 19.1. The results obtained show good agreement with an accuracy of 96.89%. Practical implications The proposed HECPFSM is developed for high-speed brushless AC applications like electric vehicle (EV)/hybrid electric vehicle (HEV). Originality/value The proposed HECPFSM offers better flux regulation capability with enhanced electromagnetic performance as compared to conventional consequent pole FSPM. Moreover, the developed LPMNM reduces drive storage and computational time by modeling one-third of the machine.

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Section: Operating Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design and lumped parameter magnetic network model of hybrid excited consequent pole flux switching machine

Ullah

Khan

et al. 2022

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“…Generally, FSM is doubly salient structured and produces numerous problems, including high cogging torque, more torque ripples, and high magnetic flux leakage. Many HEFSM topologies were proposed in literature recently [13]- [19]. In [13], the flux regulation principle of three different topologies was presented based on the PM positioning.…”

Section: Introductionmentioning

confidence: 99%

“…In [15], a new variable structure magnetic network model method was proposed that greatly decreases the time necessary for HEFSM design. A consequent pole HEFSM was proposed in [19] with a flux bridge to prevent flux leakage from the stator. The authors in [20] proposed the HEFSM design, aiming for a high filling factor and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Modular E-Shaped Stator Hybrid Excited Flux Switching Motor With Flux Gaps

et al. 2022

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This paper proposes a new modular hybrid excited flux switching motor (MHEFSM) with flux gaps, adding the fault-tolerant capability to the proposed motor. The proposed motor uses an E-Shaped stator, as the middle teeth of E-core produce fault-tolerant capability, and in C-core, this capability is eradicated. The no-load flux linkage is calculated by the magnetic network model (MNM) to reduce time and disk storage. The drawback of the constant flux linkage of PM motors is overcome by employing field excitation (FE). The FE helps in regulation flux at higher speeds. The motor leading geometry variables are optimized by using Genetic Global Optimization (GGO). The GGO helped in refining the structure of the motor and has improved the flux linkage by 68.18%, average torque and torque density by 62.35% each, reduced torque ripples by 20.62%, and cogging torque by 18.52%. The volume of permanent magnet (PM) in the proposed MHEFSM is reduced by 36.24%, and 48.49% higher average torque and torque density is obtained compared to the state of art motor proposed in the literature. Furthermore, a 3D analysis of the proposed MHEFSM is done to further evaluate the electromagnetic performance.INDEX TERMS Finite element analysis, flux gaps, modular stator, variable flux machine, genetic optimization.

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Investigation of load effect on the magnetization performance of stator consequent pole memory machine

Yang

et al. 2023

AIP Advances

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In this paper, the load effect on the magnetization performance of a stator consequent pole memory machine (SCPMM) is revealed and investigated comprehensively. The topology of the SCPMM is described, and influences of the load effect on the magnetization state (MS) manipulation process are characterized by the magnetic field distributions excited by different types of currents. Subsequently, the demagnetization type induced by the load effect and the cross-coupling phenomenon is identified and analyzed by a virtual linear hysteresis model. The characteristic curves of the magnetizing and demagnetizing processes vs different q-axis armature currents are tested experimentally in a SCPMM prototype. In order to improve the MS manipulation accuracy, a compensation control strategy that takes the load effect into consideration is proposed. Finally, the effectiveness of the proposed compensation control strategy is verified by experiments.

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Design and optimization of segmented PM consequent pole hybrid excited flux switching machine for EV/HEV application

Cited by 10 publications

References 18 publications

Design and lumped parameter magnetic network model of hybrid excited consequent pole flux switching machine

Design and lumped parameter magnetic network model of hybrid excited consequent pole flux switching machine

Performance Analysis of a Modular E-Shaped Stator Hybrid Excited Flux Switching Motor With Flux Gaps

Investigation of load effect on the magnetization performance of stator consequent pole memory machine

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