Performance Comparison and Analysis of (HEFSM) and (FEFSM) Using Segmental Rotor Structure

Soomro, Hassan Ali; Sulaiman, Erwan; Omar, Mohd Fairoz

doi:10.4028/www.scientific.net/amm.695.778

Cited by 10 publications

(5 citation statements)

References 6 publications

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“…Active flux producing sources in case of "PM-FSM" and "FE-FSM" are PMs and "field excitation (FE) coil" respectively. While in case of "HE-FSM" PMs and FE Coils are combined to generate the flux [15], [16].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of double stator HE-FSM for aircraft applications

Ali

Sulaiman

Jenal

et al. 2021

IJPEDS

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The main objective of aerospace industry is to produce all electric aircraft (AEA) equipped by electrical devices in coming developments. Electrical machines that provide higher torque densities are gaining more interest for researchers to obtain sustainable direct-drive electrical propulsion system for aircraft applications. In addition to lesser weight and higher torque density, a machine should be “fault tolerant” to applied in aerospace applications. A novel machine for high starting torque, identified as flux switching machine (FSM) was established over the last decade. FSMs comprise all effective sources on stator including robust rotor structure. These machines exhibited higher “torque-to-weight ratios” and reliability. Nonetheless, the challenge of developing a machine suitable for aircraft applications goes far beyond electromagnetic design and much deeper into the field of mechanical systems than traditional ones. Thus, a new double stator (DS) hybrid excitation (HE) FSM design employing segmented rotor is proposed and analyzed in this research work. The suggested design for DS HE-FSM comprises of six field excitation coils (FECs) and six permanent magnets (PMs) as their excitation sources. In this research, investigation of DS HE-FSM is accomplished with respect to flux linkage, back EMF, cogging torque and torque analysis based on 2D FEA.

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Section: Introductionmentioning

confidence: 99%

Design and analysis of double stator HE-FSM for aircraft applications

Ali

Sulaiman

Jenal

et al. 2021

IJPEDS

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“…Furthermore, a segmented rotor structure which is free from any excitation coils, and PMs, is developed to increase the excitation of motor by disturbing bi‐directional magnetic flux, necessary for the FSM process [31–34]. As is evidently defined in [35, 36], the machine that uses a segmented rotor permits the principle of mutual coupling together with the usage of concentrated tooth‐wound coils causing the generation of bidirectional flux. This bidirectional magnetic flux empowers the motor to attain higher torque and power densities.…”

Section: Introductionmentioning

confidence: 99%

Design and performance analysis of various high torque segmented rotor HE‐FSM topologies for aircraft applications

Ali

Sulaiman

Kosaka³

2020

IET Electric Power Applications

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Electrical machines for aircraft applications require basic characteristics such as lightweight, high reliability, fault tolerance ability, and torque power and higher densities. Correspondingly, hybrid excitation flux switching machines (HE‐FSMs) are capable of producing significant characteristics of high torque and power by improving flux strengthening in the iron core. However, magnetic flux cancellation and leakage in HE‐FSMs cause the reduction of flux linkage created by permanent magnet (PM) and field excitation (FE), which leads to deterioration of electromagnetic torque. This study presents magnetic flux performance and comparison of various topologies of HE‐FSMs by employing different positions of PMs and FE coils on the stator core. The purpose of a segmented rotor is to deliver a well‐defined electromagnetic flux pathway for carrying magnetic flux to nearby armature coil on stator with rotor rotation to improve the flux strengthening. Moreover, magnetic performances of various proposed HE‐FSMs at different positions of PMs are investigated and compared based on 2D finite element analysis. Subsequently, the enhanced HE‐FSM III has successfully achieved flux strengthening of 22%, torque of 54% and power of 61% more than initial design of HE FSM I, respectively. In conclusion, the proposed HE‐FSM structures show the capability to match high torque and power for aircraft applications.

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“…PMs and FECs are key active flux sources of PM-FSM and FEFSM respectively. While both PM and FECs are combined to produce flux in HE-FSM [11][12].…”

Section: Introductionmentioning

confidence: 99%

2D-FEA Based Design and Performance Analysis of Low Weight Segmented Rotor HE-FSM for Light Weight Aircrafts

Ali¹,

Sulaiman²,

Omar³

et al. 2018

IJET

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All electric aircraft (AEA), is one of the main intentions of the aerospace industry for future. Where electrical machines are capable to provide high torque density and are dominant for the feasibility of direct drive electrical driving force for aircraft applications. Besides, low weight and high torque capabilities, the best candidate solution should also inherently fault tolerant for aircraft applications. For these reasons, a new sort of machine has been familiarized and published in last decade know as flux switching machine (FSM). FSMs contain all excitation sources on stator side with robust rotor structure. According to the type of excitation, FSMs are characterized into three types such as permanent magnet PM FSM, field excitation FE FSM and hybrid excitation HE FSM. PM FSM and FE FSM use PM and FE coil for their excitation sources respectively, whereas both PM and FE coil is used in HE-FSM for excitation. Subsequently, these machines have shown high torque to weight ratios and high efficiency during research in the last decade. Therefore in this paper, a new structure of 12S-8P HE-FSM with segmental rotor has been proposed and analyzed. The proposed segmented HE-FSM has the simple structure using only three PMs and three FECs. The proposed structure is analyzed using commercial 2D FEA package, JMAG-designer ver. 14.0. This paper presents the coil test analysis of segmented HE-FSM to confirm the working principle. Besides, cogging torque, flux strengthening, torque vs current densities and power vs current densities have been analyzed and presented.

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Performance Comparison and Analysis of (HEFSM) and (FEFSM) Using Segmental Rotor Structure

Cited by 10 publications

References 6 publications

Design and analysis of double stator HE-FSM for aircraft applications

Design and analysis of double stator HE-FSM for aircraft applications

Design and performance analysis of various high torque segmented rotor HE‐FSM topologies for aircraft applications

2D-FEA Based Design and Performance Analysis of Low Weight Segmented Rotor HE-FSM for Light Weight Aircrafts

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