Abstractdoi: 10.1088/1757-899X/917/1/011001pmid: N/A
International Conference on Technology, Engineering and Sciences (ICTES) 2020 is co-organised by MN Smart Solution, Malaysia and Akademia Baru Publishing, Malaysia in collaboration with Sri Ramakrishna Institute of Technology, India and Rajamangala University of Technology Srivijaya, Thailand.This conference provides lots of networking opportunities to scholars, professors and practitioners for corporate and development sectors. The scope of this conference is broad and covers many aspects of international technology perspectives. This conference aims to provide scholarly platform to participants to share their valuable knowledge and current information with others.The conference is expected to attract the participation of academics, researchers and professional practitioners of ‘sciences’ and ‘engineering’ in Malaysia and also abroad. Knowledge sharing of ideas among academics and professionals has the potential to bridge the gaps and build an understanding on the various aspects of ‘sciences’ and ‘engineering’ nationally or internationally.As concerns increased over the pandemic of Corona Virus Disease (COVID-19), the organising committee had changed the meeting of ICTES 2020 from a physical to virtual format. The meeting had moved to virtual instead of being postponed due to the fact that we do not know when the pandemic situation will be over, subsequently concerned about the safety of our participants.The dates of the virtual conference remained unchanged to the initial proposed dates, which are on 17-18 April 2020, held in Penang, Malaysia. The talks of each presenter are limited to not more than 10 minutes per presentation (including Q&A sessions). The participants are located in their own location, since the Restriction of Movement Order (RMO) had been imposed not only in Malaysia (starting from 18 March 2020), but also other parts of the world as a measure to curb the outbreak. Thus, we had used Google Meet as our main platform/technology to deliver the conference.
Peer review declarationdoi: 10.1088/1757-899X/917/1/011004pmid: N/A
All papers published in this volume of IOP Conference Series: Materials Science and Engineering have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.List of types of peer review, Any additional info on review process, Contact person for queriesare available in this pdf.
Performance comparison of initial and optimized designs of dual stator HEFSM for aerospace applicationsAli, Hassan; Sulaiman, Erwan; Jenal, Mahyuzie; Ali, Irfan
doi: 10.1088/1757-899X/917/1/012001pmid: N/A
For aerospace propulsion system, electrical machines are capable to deliver high torque density and are dominant for the viability of direct-drive electrical propulsion for aircraft applications. Besides light “weight and high torque ability, the machines “should also be inherently fault tolerant for it to be used in aircraft applications. For these reasons, a new type of machine has been introduced in last decade know as flux switching machine (FSM). FSM contains all its flux excitation sources on stator side with robust piece of rotor which is free from permanent magnets (PMs) and coils. Since, these machines have shown high torque-to-weight ratios and high efficiency during research in the last decade. Regardless of this, the task of designing a machine appropriate for aerospace application goes beyond the electromagnetic design and into the area of mechanical design much deeper than traditional designs. Therefore, in this paper, a new structure of dual stator (DS) HEFSM with segmental rotor is proposed and analysed. Moreover, the initial structure of proposed design” is optimized using deterministic optimization method. Furthermore, the performance of initial and optimized designs are compared and investigated using 2D-FEA method.
Buried PM inner rotor magnetic gear evaluationHalim, M F M A; Sulaiman, Erwan; Jenal, Mahyuzie; R Othman, R N F K
doi: 10.1088/1757-899X/917/1/012002pmid: N/A
Inner rotor SFPMR glued on the rotor surface with material of high compressive strength but low tensile strength cannot sustain the centrifugal force in the high-speed operation, thus require retaining sleeve. Electrical motor employ the retaining sleeve to increase the rotor strength, but so far in MG, there are limited design that employ this technique. Another method to avoid PM from displaced is by buried into the rotor yoke. However, this method may result in lower torque and noise. In this paper, new MG structure is designed. The inner rotor surface mount PM of magnetic gear is rearrange as buried PM. First, the torque analysis of the MG is simulated without counting any loses. Then, gear efficiency is simulated over high speed range and compared to the original topology to identify the amount of reduction of the torque. The result agrees that the buried rotor reduced the torque output 3 times lower than the surface mount PM and disturb the torque which result in high torque ripple over 240%.
Analytical Design Structure of New Segmental Stator Permanent Magnet Flux Switching MotorOthman, S.M.N.S.; Sulaiman, Erwan; Jenal, Mahyuzie
doi: 10.1088/1757-899X/917/1/012003pmid: N/A
Permanent Magnet Flux Switching Machines (PMFSM)s are among the most widely investigated types of electric motor because of high flux density compared to switch reluctance motor (SRM). The aim of the present work is to design a three phase 12Slot-14Pole segmental stator (SegSta) PMFSM and to investigate the flux linkage of U, V, W phase. In this study, 12S- 14P SegSta PMFSM is investigated by using 2-D finite element analysis (FEA) software develop by JMAG designer ver 15.0. The geometry structure of the 12S-14P PMFSM design is 264 mm diameter and the permanent magnet total weight is approximately 2 kg. The results of the 2-D FEA simulation indicate that the open angle between each SegSta is 30 degree for uniformly flux distribution in each SegSta core. It is found that the amplitude difference for each U, V, W phase is approximately zero since at 30 degree the flux density is evenly distributed at stator core with concentrated winding. Overall, this paper contributes to the methodology for designing a segmental stator 12Slot-14Pole PMFSM..
Study of permanent magnet configuration in alternate circumferential and radial flux permanent magnet flux switching machines (AlCiRaF-PMFSM)Jenal, Mahyuzie; Othman, S. M. N. S.; Sulaiman, Erwan
doi: 10.1088/1757-899X/917/1/012004pmid: N/A
Alternate circumferential and radial flux (AlCiRaF) is new design in PMSFM. AlCiRaF PMFSM offers high torque and power density. However, AlCiRaF PMFSM is a novel design that a good opportunity to be potential improved further. In this research, the nine design of permanent magnet configuration in AlCiRaF PMFSM is proposed to compare each performance possibilities. The configurations of permanent magnet are introduced to study the performance effect by changing the permanent magnet position which is PM-Bottom, PM-Middle and PM-Top for both circumferential and radial direction. Besides, the permanent magnet structure design will improve field winding area structure to provide space for future improvement. Weight of all the permanent magnets are estimated to be 0.5 kg altogether. Initially, design procedures of the all motor including parts drawing, material and condition setting, the properties setting are all explained. Then, coil arrangement test is conducted to perform 3 phase armature coil arrangement. Then, no load analysis is conducted to analyze cogging torque, flux linkage, flux distribution and back-EMF of motor followed by load analysis which analyze the torque speed characteristics and output power of the motor with different permanent magnet configuration. No load analysis and load analysis are conducted using finite element analysis of JMAG Designer 16.0. Finally, it is found that there is no significant difference that resulted and the best permanent magnet configuration compared to the Existing AlCiRaF PMFSM permanent magnet design is TRBC PM and MRBC PM due to the capability to produce high output torque and power based on the analysis conducted.
Overview of inner rotor radial permanent magnet machines for electric vehiclesAli Soomro, Irfan; Sulaiman, Erwan; Jenal, Mahyuzie; Ali, Hassan
doi: 10.1088/1757-899X/917/1/012005pmid: N/A
Nowadays, there is fast growing interest in electric vehicles from automakers, governments and customers due to increasing concern of our environment. This paper presents an overview of various inner rotor radial permanent magnet electric machines for application to electric vehicles (EVs). First of all, the classification and brief introduction of radial permanent magnet machines are presented. The key features of the machines, including the advantages and disadvantages of the machines are summarized. Furthermore, the latest development of the machines is also reviewed. Then, the structure of viable electric machines that have been applied to electric vehicles, including radial permanent magnet synchronous machines (PMSM), switched reluctance (SRM), interior permanent magnet (IPM) and flux switching machines (FSM) types are being reviewed.
Compressive Failure of Rattan Reinforced Soil MixtureShien, Ng Kok; Dexter Delia, Evodius; Yee Ming, Chew
doi: 10.1088/1757-899X/917/1/012006pmid: N/A
Natural fibrous materials such as coir, jute and kenaf have been used as reinforcement to increase the compressive strength of soft soil. This study introduces a new natural fibrous material namely rattan as the reinforcement for soft soil. The main objective is to determine the compressive failure of soft soil reinforced with rattan. Unconfined Compression Test was conducted according to BS1377-7:1990 standard testing procedures. The first series of testing was conducted on inclusion of different content of rattan strip (0 %, 0.5 %, 1.0 %, 1.5 % and 2.0 %) in soft soil. The second testing series is conducted on inclusion of different length of rattan strip (2 cm, 3 cm, 4 cm, 5 cm and 6 cm) in soft soil. The samples are all prepared at optimum moisture content (27 %) and maximum dry density (1.435 Mg/cm3). Mix performances were obtained where inclusion of rattan can be either beneficial or detrimental depending on the content and the length of the rattan. Rattan fiber of 0.5 % and length of 4 cm seems to be the optimum value in achieving higher compressive strength. Generally, the reinforced soil using rattan strip shows more plastic and ductile behavior.