Journal ArticleDOI
Practical Implementation of the Bridge Configured Winding for Producing Controllable Transverse Forces in Electrical Machines
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TLDR
In this article, the authors describe the practical implementation of such a winding connection in a conventional electric machine and demonstrate that controllable transverse forces can be produced by using a bridge configured winding.Abstract:
It is now evident that the value of endowing rotating machines with the capability to produce transverse forces in addition to their normal torque-producing function can be extremely high. The bridge configured winding is a cost-saving connection scheme for electrical machines to exploit transverse magnetic forces on the rotors. The winding scheme retains the machine's three-phase terminals such that ordinary motor inverters can be employed for the normal torque-producing function while providing separate terminals for transverse force action. This paper describes the practical implementation of such a winding connection in a conventional electric machine and demonstrates that controllable transverse forces can be produced.read more
Citations
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Journal ArticleDOI
Design of Dual Purpose No-Voltage Combined Windings for Bearingless Motors
TL;DR: In this article, a single motor winding is proposed to produce both radial force and torque, which can be used to transform conventional motor designs into bearingless motors by modifying the winding end connections.
Journal ArticleDOI
A Novel Parallel Motor Winding Structure for Bearingless Motors
TL;DR: In this article, a novel winding structure without separated suspension winding has been proposed for bearingless motors, which basically has two parallel paths in three-phase motor windings, one three phase winding path has a neutral point in general, but another three phase wind path is connected to a suspension inverter, which injects currents for suspension force generation.
Journal ArticleDOI
Power Loss Analysis in Thermal Design of Permanent-Magnet Machines—A Review
TL;DR: In this paper, the authors provide an overview of the challenges and limitations regarding power loss analysis in the context of the thermal design of electrical machines and discuss the major loss components associated with the active parts of a machine assembly.
Proceedings ArticleDOI
Practical implementation of dual purpose no voltage drives for bearingless motors
TL;DR: In this article, the use of two-level inverters is investigated for the two configurations of DPNV windings: the "parallel" and "bridge" configurations, and experimental results are presented to validate the proposed power electronic implementation.
Journal ArticleDOI
Radial Force Control of Multisector Permanent-Magnet Machines for Vibration Suppression
TL;DR: This paper takes advantage of the spatial distribution of the winding sets within the stator structure in a multisector permanent-magnet (MSPM) machine toward achieving a controllable radial force.
References
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Journal ArticleDOI
An analysis of bearingless AC motors
TL;DR: Several types of AC bearingless motors have been proposed in this article, which have conventional four-pole stator windings and additional two-pole windings, whose currents produce radial forces acting on the rotor.
Journal ArticleDOI
Principle and Application of a Bearingless Slice Motor
R. Schoeb,Natale Barletta +1 more
Journal ArticleDOI
Design aspects of bearingless slice motors
TL;DR: In this paper, the design aspects of bearingless slice motors with permanent magnet excitation are investigated. And a methodical evaluation approach based on performance indexes is presented to evaluate the performance of the slice motors.
Journal ArticleDOI
Levitation and torque control of internal permanent magnet type bearingless motor
TL;DR: An internal permanent magnet (IPM) type bearingless motor is introduced which has the merits of strong levitation force and relatively easy control properties and a simple experimental apparatus is made to confirm the properties.
Journal ArticleDOI
Back-EMF waveforms and core losses in brushless DC motors
T.J.E. Miller,Raul Rabinovici +1 more
TL;DR: In this paper, a self-consistent set of algorithms applicable to the calculation of the back-EMF waveform of any winding distribution in all the main classes of radial-airgap brushless DC motor, together with the no-load core losses, is presented.