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Showing 1 to 17 of 17 for “"Permanent magnet motors"”.
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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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Damage analysis of internal faults in flux concentrating permanent magnet motors
Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Parameter Identification And Fault Detection For Reliable Control Of Permanent Magnet Motors
… (DTC) and Field Oriented Control (FOC) for Permanent Magnet Machines. New detection schemes forfault detection, isolation and machine parameter identification are presented and analyzed. Different control schemes as PID, DTC, FOC for Control of PM machines have different control loops and …
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Design, analysis and implementation of a spoke-type motor with high-performance ferrite magnets for electric vehicle applications
Over the past decades, rare-earth permanent magnet motors have been widely used in high-power applications such as electric vehicle propulsion motors due to their high energy density and efficiency. However, the high cost, unstable supply, and small reserves of rare-earth materials make the …
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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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Computer simulation of steady state and transient performance for permanent magnet DC motors
Permanent magnet motors have outstanding performance for applications such as industrial robots, computer peripherals and automobiles. Since these motors are being used in a growing number of applications, the techniques used to model them are becoming more important in an attempt to obtain the …
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Design of a frameless torque motor
… has an inertial guidance system which uses permanent magnet motors to compensate for friction loss in the moving parts. Since the space available for these motors is limited, the motor designer must obtain a design which will supply maximum torque for the available power input. The designer …
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Rotary-linear axes for high speed machining
… and unlimited rotary travel. Two frameless permanent magnet motors respectively provide up to 41 N continuous force and 0.45 N-m continuous torque. The rotary motor is composed of commercially available parts; the tubular linear motor is completely custom-built. The prototype axis achieves a …
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Finite element simulation based design and optimization of electric motors for EV/HEV traction application
… thesis deals with the design and optimization of permanent magnet based traction motors with given dimensions and drive constraints. The goal is to develop a method which has the accuracy of finite element method but with much smaller time consumption for designing and optimizing the motor. Since …
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Cogging torque reduction of 6s-4p spoke-type IPMSM using a new combination of rotor design
Cogging torque is one of the vital issues in permanent magnet motors (PMM). Reducing cogging torque, which may cause vibration and acoustic noises, has become an increasingly critical issue in PMM. Low cogging torque significantly reduces acoustic noises and vibration, and enhances the positioning …
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Modeling and Validation of Rolling Rotor Switched Reluctance Motors for Automotive Applications
… require robust and low cost electric motors for the reason of their mass production and operation in different environments. Permanent magnet motors have been used in automotive applications for their high power density when compared to other existing types of motors. Recent years, the …
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Efficient operation of variable-pole induction machines and drives
… range are critical for EVs. Most modern EVs use permanent magnet (PM) motors which rely on rare-earth material to achieve high energy efficiency. However, rare-earth magnets are expensive, have low recycling rates, and have high risk of price volatility. An induction machine (IM) is a magnet-free …
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Implementation of a Hardware-in-the-Loop System Using Scale Model Hardware for Hybrid Electric Vehicle Development
… hybrid consists of five direct current (DC) permanent magnet motors. These motors are used in the system to test the controller software of the vehicle. Two of the motors act as power plants simulating the spark ignited Ethanol engine and the rear traction motor. These two motors are …
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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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FRACTIONAL-SLOT CONCENTRATED-WINDING SURFACE-MOUNTED PERMANENT MAGNET MOTOR DESIGN AND ANALYSIS FOR IN-WHEEL APPLICATION
… For in-wheel application, surface-mounted permanent magnet motor with fractional-slot concentrated-windings is adopted. Its torque-speed profile of flux-weakening control is calculated. Different methods of losses calculation are compared and the results are presented. Motor control …
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Scaling a Prismatic Revolute Joint (Pr) Manipulator Using Similitude and Buckingham Pi Techniques
… prismatic revolute (PR) manipulator actuated by permanent magnet (PM) direct current (d.c.) gearmotors. Dimensional analysis was the principle tool used in this investigation, and addressed the problems of scaling a trajectory planner, control law, and gearmotors that exhibit internal nonlinear …
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Design and Testing of e-Motors for Transportation
L'abstract è presente nell'allegato. / The abstract is in the attachment.