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Showing 1 to 15 of 15 for “"Permanent magnet motor"”.
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High-speed permanent magnet motor generator for flywheel energy storage
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Efficiency Improvement Strategies and Control of Permanent Magnet Motor Drives
Permanent magnet brushless dc (PMBDC) and synchronous machines (PMSM) drives are favored in variable speed applications for their high efficiency operation. Energy efficiency improvement in such motor drives is of interest in recent times because of rising cost of energy. Accordingly, two current …
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Design of a permanent magnet motor and a drive for cranking purposes
… increased the research of applications of permanent magnets for use in automobiles. However the application of permanent magnet machines for cranking purposes has not been investigated much. Difficult operating conditions, like, a maximum current density of 35A/mm², and the ability to …
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Linear iron-core permanent magnet motor with high force and low acoustic noise
… electric machines including variable-reluctance motors, induction machines, and permanent magnet synchronous motors. The severity of this problem depends on the types of motors and their applications. One exemplary case where the vibro-acoustic noise becomes especially detrimental is iron-core …
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Electromagnetic-thermal modeling for high-frequency air-core permanent magnet motor of aircraft application
A 1 MW high-frequency air-core permanent-magnet (PM) motor, with power density over 13.8 kW/kg (8 hp/lb) and efficiency over 96\%, is proposed for NASA hybrid-electric aircraft application. In order to maximize power density of the proposed motor topology, a large-scale multi-physics optimization …
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FRACTIONAL-SLOT CONCENTRATED-WINDING SURFACE-MOUNTED PERMANENT MAGNET MOTOR DESIGN AND ANALYSIS FOR IN-WHEEL APPLICATION
… working area on efficiency map where electric motor works for the most time. Thus, two motivations are proposed: first, to evaluate the efficiency map of electric motor analytically, second, to design an electric motor whose maximum efficiency area on efficiency map covers its regular working …
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A DC chopper controller for a battery electric vehicle
… system, consisting of a chopper controller and a permanent magnet motor, is described and tested in four modes of operation - two modes of motoring and two of regenerative braking. From the experimental results, it was estimated that approximately 10% of the energy expended by the vehicle during …
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Modeling and optimization of permanent magnetic motors
… the prediction and optimization of radial-flux permanent magnet motor torque and efficiency. It also facilitates the design optimization of electromagnetically-powered rotorcraft by characterizing optimal motor performance over a wide range of motor mass. The solution of the Poisson Equation, …
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Research on Dual-Axis Solar Tracking Systems Using AI-Controlled Boost Converter for Sustainable Energy Solutions
… actuate a PID controller which drives a DC permanent magnet motor. It is compared to a second-order LPF IIR filter used in identical experimental setup. Secondly, a five-layer hierarchical structure with three AI modules is constructed to analyse, predict, and control a DC-DC boost …
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Optimal Control of a Stepping Motor
Over the past few years the stepping motor has been the subject of detailed study by manufacturers, users and research workers. This interest arises from the rapidly increasing demand for digital actuators, particularly in the machine tool and computer peripheral industries. The optimal control of …
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High force density linear permanent magnet motors : "electromagnetic muscle actuators"
… reconsiders a traditional actuator, the linear permanent magnet motor, as a form of active material actuator, and presents new, unified scaling and magnetic field models for its performance. This active material motor model predicts that motors composed of large numbers of very small, …
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Bearingless Slice Motor and 6-DoF Position Sensor for Extracorporeal Pump
Bearingless slice motors perform the function of a conventional motor with a suspended rotor, and therefore require no bearings or other mechanical support. Such combined motor and suspension operation requires a motor design that can generate force as well torque in order to stabilize all 6 …
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Doubly-Salient Permanent Magnet Flux-Reversal-Free-Stator Switched Reluctance Machines
… hybrid machine having variable reluctance and permanent magnets (PMs) is presented. The machine makes use of the features of a PM machine and variable reluctance machine. The resulting machine is doubly salient and has a structure free of flux reversals. Unlike conventional doubly salient …
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Development of a high power density rotor
High specific power electric machines are crucial to enabling electric and hybrid-electric aircraft. In order to meet this need, a high specific power electric machine with an unconventional topology is being developed. The topology creates mechanical challenges including expansion due to high speed, …
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High Performance Sensorless Controlled PMSM Drive with Long Cable for Subsea Applications
… to a demand for highly efficient and reliable motors and their control. These motors are essential components of subsea applications like drilling, pumping, and boosting, which are necessary to extract natural gas and oil. The Permanent Magnet (PM) motors, known for their higher efficiency and …