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Showing 1 to 20 of 92 for “"brushless"”.
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Switched brushless doubly-fed reluctance machine drive
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Aspects of brushless doubly-fed induction machines.
… dissertation, composed of two parts, studies the brushless doubly-fed induction machine (BDFM)- an electric machine with two stator windings, a modified cage-rotor, and, when run synchronously, the electrical properties of a synchronous machine, i.e. precise speed and power-factor control. The …
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Sensorless starting of a brushless D.C. motor
Permanent magnet brushless DC motors that have found wide application in high performance servo drives need absolute rotor position sensors. However, the cost of the position sensor limits the use of brush less DC motors for low performance applications such as automotive and home appliances. A …
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Commutation of a Brushless Motor, Using Power Transistors
The design and performance of a d.c. brushless motor and the application of power transistors to the commutation of the winding are considered in this thesis. The arrangement of a conventional d.c. motor is inverted and tappings from the commutated-winding are connected to bipolar switching …
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Digital Generator Control Unit for Synchronous Brushless Generator
… Control Unit (GCU) for a high-speed synchronous brushless generator. The control of variable frequency power system, a preferred candidate in More Electric Aircraft (MEA), becomes a big challenge. Compared with conventional analog GCU, digital GCU is a future trend due to the properties such as …
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A Brushless DC Motor Drive Without a DC Link Capacitor
… in the context of industrial motor drives, Brushless DC (BLDC) and Permanent Magnet Synchronous (PMS) motors have become popular as energy efficient and reliable alternatives for induction motors. Both BLDC and permanent magnet synchronous motors are electronically commutated based on the …
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Investigation of High-Efficiency Radial and Tapered Brushless PM Machines
… and design modifications should be considered. Brushless permanent magnet (PM) machines are an excellent substitute to replace conventional machines in many applications as they offer higher efficiency, reliability and power density. Therefore, this thesis addresses the design challenges in two …
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Torque Controlled Drive for Permanent Magnet Direct Current Brushless Motors
… a simple variable speed drive (VSD) based on a brushless direct current (BLDC) machine and discrete logic circuits. A practical VSD was built, capable of operating a BLDC machine in two quadrants, motoring and regenerative braking. The intended applications are electric scooters and electric …
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Analysis of an energy efficient permanent magnet brushless universal motor
… behind the rapid growth of permanent magnet (PM) brushless motor drives. The state of the art in PM motor technology is the PM universal motor, i.e. a combination of a PM synchronous and a PM brushless direct current (DC) motor. The PM universal motor has the capability to operate as a variable …
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Design and prototyping methods for brushless motors and motor control
… design and prototyping methods for custom brushless permanent magnet synchronous motors are explored. Three case-study motors are used to develop, illustrate and validate the methods. Two 500W hub motors are implemented in a direct-drive electric scooter. The third case study, a 10kW axial …
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Design and control of a closed-loop brushless torque activator
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990.
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SENSORLESS CONTROL OF BRUSHLESS PERMANENT-MAGNET MACHINES FOR POWER TOOL APPLICATION
Permanent-magnet-synchronous-machine (PMSM) drives are widely used in industrial and commercial applications which requires fast dynamic response and accurate control over wide speed ranges. Although, there exists challenges to develop position-sensorless based vector control of PMSM operating in …
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Optimization of permanent magnet brushless machine for biomechanical energy harvesting applications
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2010-04-20T23:22:36Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Sayyah_Arash.pdf: 18996023 bytes, checksum: f6950eeff7c2e6a7c36c7539988ca98d (MD5)
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Simulation of speed control brushless DC motor using gaussian fuzzy logic controller
… a control scheme of a Fuzzy Logic for the brushless direct current (BLDC) motor drives. The BLDC motor has some advantages compare to others type of motors. However, the nonlinearity of this motor drive characteristics cause it is difficult to handle using conventional …
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