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Three-phase field excitation flux switching motor (FEFSM) with salient rotor structure has been introduced with their advantages of rotor easy temperature elimination and controllable FEC magnetic flux. Yet, the salient rotor structure is found to lead a longer magnetic flux path between stator and rotor parts, producing a weak flux linkage along with low torque performances. Hence, a new structure...
Permanent magnet flux exchanging machine (PMFSM) with every single active part situated on the stator has a few appealing elements contrasted with customary induction machine because of its high torque and power density, better efficiency, simple and vigorous rotor structure, however, less were developed for downhole application due to harsh environmental conditions. In the past, a large portion of...
Recently, outer-rotor electric machine become a research attention to be applied for in-wheel motor either in electric or hybrid electric vehicles (EVs). Among the competitor for in-wheel machines, the permanent magnet synchronous machine (PMSMs) with an outer-rotor have been used widely due to their high performances in terms of torque ad power. However, there is drawback cause by demagnetization...
Interior permanent magnet (IPM) motors become popular and commonly used in industry and domestic applications. One of them is spoke-type IPM. Spoke-type interior permanent magnet (IPM) machines are an attractive topology for high-performance electric motors. In most of the applications, the high strength of permanent magnets causes the undesirable effects of high cogging torque that can aggravate...
Hybrid Permanent Magnet Flux Switching Machine (HPMFSM) is a machine that uses two permanent magnets which are Ferrite Permanent Magnet (FPM) and Rare Earth Permanent Magnet (REPM). The REPM had being implemented widely in HEV nowadays. So, HPMFSM is created in order to reduce the volume of REPM itself. Three designs had created which are PM, PMH and SMH design. PM only consist of REPM, meanwhile...
Plug-in hybrid electric vehicle (PHEV) is independent of the internal combustion engine but acts as the auxiliary unit mostly on the electric drive system. Main while, the Flux-switching permanent magnet machine (FSPMM) has been studied in terms of structure with its operation principle been analyzed. To achieve a higher torque with a corresponding high power density and lower torque ripple, FSPMM...
Direct-drive is one of the in-wheel application that evolve enormously for full electric vehicle where it still require a lot of improvement and as an alternative especially on the outer-rotor field excitation flux switching motor. Furthermore, to reduce the usage and dependence of permanent magnet such as ferrite magnet, FE2O3 and neodymium an alternative is needed. Besides, without permanent magnet...
Hybrid Excitation Flux Switching Machine (HEFSM) is a machine that achieves high performances, where it can compete with the Interior Permanent Magnet Synchronous Machine (IPMSM) which being implemented widely in HEV nowadays. The machine also when compared to Field Excitation Flux Switching Machine (FEFSM) and Permanent Magnet Flux Switching Machine (PMFSM), generate much higher performance mainly...
Increasing transportation efficiency is the best place to start efforts to reduce emission of carbon dioxide (CO2), which is a primary culprit in global warming. This has gained an interest in electric vehicles (EVs) instead of conventional internal combustion engine from automakers, governments and customers to make it as more attractive research. Since electric motors are the core of EVs, it is...
This paper comprehensively investigates methodology of 3D FEA model of a novel 12Slot-10Pole wound field flux switching machine (WFFSM) with salient rotor and non-overlapping windings (SalRoN) and compared the results with 2D FEA. This machine does not require slip-rings or brushes and combines the stator of WFFSM with segmental rotor and non-overlapping windings (SegRoN) and rotor of WFFSM with salient...
This paper presents the design of Varactor Tank Voltage Controlled Oscillator (VCO) with multiple outputs using Colpitts Oscillation. Design process followed industry guidelines in order to achieve ultra-low power consumption and low phase noise production. Each VCO proposed is a combination of main tank, Colpitts Oscillator, Varactor tank, negative resistance and utilized with super filter voltage,...
A flux switching machine (FSM) with a segmented rotor and non-overlap windings is an attractive alternative for driving high torque density applications. However, a rotor with segments makes the motor less robust as well as difficult to be assembled, whilst, FSMs with salient rotor and overlap windings inherit high copper losses and less efficiency due to high coil volume. In this paper, performance...
Single-phase Field Excitation Flux Switching Machines (FEFSMs) are increasingly considered as suitable candidate for high speed applications due to their variable flux capability and single piece structure of rotor. However, most of existing FEFSMs have overlap windings between armature and field excitation coil (FEC) which lead to increased size of motor, copper losses as well as material costs....
Dual Rotor Hybrid Excitation Machine (DRHEFSM) idea mainly comes from the existing Hybrid Excitation Flux Switching Machine (HEFSM). HEFSM has been tested and obtain remarkably result. The machine rivaled the Interior Permanent Magnet Synchronous Machine (IPMSM) and produce high performance when compared to Field Excitation Flux Switching Machine (FEFSM) and Permanent Magnet Flux Switching Machine...
An interest in electric vehicles (EVs) from automakers, governments and customers due to concerns on the environment makes it as more attractive research. Since electric motors are the core of EVs, it is a pressing need for researchers to develop advanced electric motors. As one of the candidates, flux switching machine (FSM) is introduced in order to cope with the requirement. This paper outlines...
Research and development on flux switching machines (FSMs) getting popular due to their several definite advantages of high torque and power densities, constant power over a wide speed range, higher efficiency and robust rotor structure inherits combined advantages of permanent magnet synchronous motor (PMSM) and switched-reluctance motor (SRM). There are many developed and novel design of FSMs for...
In this paper, magnetic flux analysis of E-Core hybrid excitation flux switching motor (HEFSM) with various slot-pole combinations are presented. With several advantages of concentrated armature and DC field excitation coil (DC-FEC) windings, variable flux capability and robust rotor structure, design feasibility and performances analysis of 6Slot-4Pole, 6Slot-5Pole, 6Slot-7Pole and 6Slot-8Pole E-Core...
Hybrid electric vehicles (HEVs), using combination of an internal combustion engine (ICE) and one or more electric motors, are widely considered as the most promising clean vehicles. The only machine that already installed for HEVs is interior permanent magnet synchronous machine (IPMSM) where it has developed to enhance power density of the machine. Despite of fine operated and superior performances,...
Nowadays, in-wheel motors applied in pure electric vehicles (EVs) propulsion systems have attracted great attention in advance research and development. In-wheel direct drive eliminates the mechanical transmission, differential gears and drive belts. Thus, in-wheel direct drive provides quick torque response, higher efficiency, weight reduction, and increased vehicle space. As one of alternative,...
Most of commercial Hybrid Electric Vehicle (HEV)used single motor and transmission gears coupled to the wheels. This system leads to the transmission losses and reduce the efficiency and reliability of the motor. Therefore, in-wheel direct drive mechanism is introduced to overcome this problem. In-wheel direct drive eliminates the mechanical transmission, differential gears and drive belts. Thus,...
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