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This article presents the results of the magneto-electric machine's research of the wind energy conversion systems' (WECS) alternating current. Calculation of the researched machine was carried out with the latest version of the programs "Elcut 6.2 Professional" complex using. The operation's purpose was creation of the researched object's adequate geometric model, obtaining the machine's...
Internal combustion engine start processes in Hybrid Electric Vehicles (HEVs) are accompanied by large currents in the windings of electrical machines. It can lead to insulation overheating and fault operation mode. Induction squirrel-cage machine is one of the best AC machines for HEVs. The high efficiency of HEV induction machine with compact stator winding form is proposed. Its stator electrical...
Theoretical researches and simulation results, which based on numerical realization of the finite element method of three-dimensional transient mathematical model of the electrical and magnetic fields in induction motor which displayed the features of the processes of AC energy conversion in the experimental short-circuit mode are obtained. Through the implementation of the dynamic spatial model of...
This paper introduces the solution of a 150 kW high speed permanent magnet motor (HSPMM). The motor is studied with its design considerations concluded for high speed application at first; then the HSPMM air gap flux density is analytically calculated and verified by finite element method (FEM); the motor stator slot number and slot opening width are studied and investigated to obtain a desirable...
An electric machine with permanent magnets on both its rotor and stator is proposed and studied. The key idea is to using the bi-directional flux modulation effect to realize a structure with more rotor poles and less stator poles. Compared with the conventional machines with single-sided permanent magnet excitation, the proposed machine has more flexible pole-slot design when the pole number is large...
This paper proposes a novel 16/10 segmented rotor switched reluctance machine (SSRM) for belt-driven starter generators (BSGs) of hybrid electric vehicles. The stator of proposed SSRM consists of two types of stator poles: exciting pole and auxiliary pole, and the rotor of proposed SSRM is made up of a series of discrete segments. Firstly, the concept of the conventional SRM and proposed machine is...
In this paper the demagnetization faults that occur in a axial flux permanent magnet (AFPM) synchronous machine using 3D finite element method (FEM) are studied. Two different generator topologies, a single rotor and a double rotor coreless topology, are simulated. The harmonic components of the spectrum of the back-emf and the stator current waveforms are calculated and the fault indicator harmonics...
Theoretical researches and simulation results, which based on numerical realization of the finite element method of three-dimensional mathematical model of the induction motor are obtained. The regularities of the distribution of the induction and magnetic field energy in the short-circuit mode and their quantitative relation for active zone and the area of the coil ends of the stator windings of...
Fault detections are essential for unexpected failures of the electrical motors. Early detection and faults diagnosis leads to effective operations. This paper deals a diagnosis of faults in three phase induction motor by means of zero-sequence stator current spectrum. The simulation and experimental setup are designed under bearing faults. Using finite element method (ANSOFT MAXWELL-2D) the motor...
This paper compares the performance of three different topologies of spoke-type permanent-magnet vernier machines (PMVM): 1) dual airgap dual stator winding (DSW); 2) dual airgap single stator winding (SSW); and 3) single airgap (SA). These topologies were compared in terms of torque/machine volume, cogging torque, and torque ripples. The 2-D finite element method was utilized to compare the performance...
This paper investigates the capability of both permanent magnet synchronous machine (PMSM) and permanent magnet flux switching (PMFS) machine to provide high torque to inertia ratio for applications with demanding response in terms of acceleration and fast dynamic. The PMSM has higher torque density and efficiency among different electrical machines. However, the presence of the permanent magnets...
This paper proposes a design procedure of induction motor for Liquefied Natural Gas (LNG) carrier applications, implementing dual fuel electric propulsion system. For the purposes of the analysis, a preliminary motor design stage is performed by using classical analytical formulae and a parameterization of the design is introduced. In a next step, a critical design stage is developed, based on a geometry...
Interior permanent magnet (PM) synchronous motor (IPMSM) has been used in many fields, such as the air conditioner, electric tool, electric vehicles, etc., due to their high efficiency, high power density and wide speed range. However, the torque distortion and high cost of PM materials has limited the application of the IPMSM. In this paper, a technique to enhance the torque performance and minimize...
In this paper, the effects of the stator design parameters on the torque and torque ripple of a Permanent Magnet Assisted Synchronous Reluctance Motor (PMaSynRM) is searched. As the rotor design parameters has very important role in the torque production dramatically, a fixed rotor structure is used as base design and kept constant throughout the paper to observe and compare the effects of stator...
Efficiency is one of the most important characteristics of home appliances since there are tremendous amounts of units out in the market. Main factor effecting the efficiency of these home appliances is the efficiencies of the electrical motors used in them. A comparison is made for two particular motors used in washing machine; a Permanent Magnet Synchronous Motor and a Universal Motor. Comparison...
This paper presents three-dimensional numerical modeling results for a hybrid stepper motor obtained using the finite element method, in the design stage. The design of the hybrid stepper motor for achieving a specific performance requires adequate geometrical sizing. The study provides for optimal economic and technical solutions obtained through successive improvements made in the design phase,...
In this paper, the overhang structure which has been used in the radial flux permanent magnet motor was applied to the axial flux permanent magnet (AFPM) motor. We used a field reconstruction method (FRM) to quickly and precisely analyze the overhang effect from overhang structure. The FRM uses the air-gap field generated by a single slot per phase of the stator and by the permanent magnet (PM) on...
This paper quantitatively compares three types of dual-stator flux-modulated (FM) permanent-magnet (PM) machines. Due to the dual-stator topology, these three machines can maximize their use of inner cavity space and achieve higher energy transmission than that of the single-stator one. Also, the flux-modulation feature can be exploited to produce the gear effect, so as to realize high torque at low...
A novel structure of dual permanent magnet machine with PMs on both stator and rotor is presented as an effective option for high torque density direct-driven applications. The novel machine has PMs on both sides of rotor and stator. The PMs on the stator are designed as cylinder and can be rotated by an external driven system. Field can be regulated by the rotation of stator PMs. The structure and...
Odd stator slot-number permanent magnet brushless DC motor with asymmetrical-winding has the advantage of unique flux distribution in the stator slot. It could be explored to make sensorless control using flux linkage variation method for this kind of machine. This paper investigates the capability of the 9-slot 8-pole PM BLDC motor to be controlled sensorless from zero speed. The results show that...
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