Publication

Test Bench Construction for the Validation of Rotor Position Measurement in Magnetic Bearings

2020
Student Projects

Abstract

At LAl, a micro bearingless motor system is being developed, in collaboration with a Swiss company. For proper commissioning, the radial position of the rotor must be continually measured and corrected, so that the rotor can ultimately spin with no contact. Still, the magnetic fields of the rotor contain not only information of its radial position, but also of its axialdisplacement and tilting. A mathematical model has been developed, and a position measurement PCB has been constructed, aiming to verifli this model. The objective of this work is to construct a test bench that enables to test the model not only in terms of radial displacement, but of tilting and axial displacement, which can definite be of use for the commissioning as ventilator of the motor.

Official source

https://infoscience.epfl.ch/entities/publication/129aa345-3a20-4a1a-838e-11d9fe244b79

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2020
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/129aa345-3a20-4a1a-838e-11d9fe244b79

About this result

Related concepts (32)

AC motor

An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft producing a second rotating magnetic field. The rotor magnetic field may be produced by permanent magnets, reluctance saliency, or DC or AC electrical windings.

DC motor

A DC motor is an electrical motor that uses direct current (DC) to produce mechanical force. The most common types rely on magnetic forces produced by currents in the coils. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current in part of the motor. DC motors were the first form of motors widely used, as they could be powered from existing direct-current lighting power distribution systems.

Electric motor

An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy.

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Test Bench Construction for the Validation of Rotor Position Measurement in Magnetic Bearings

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