Investigation into the use of variable speed drives to damp mechanical oscillations

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dc.contributor.author Blaski, Greg
dc.date.accessioned 2017-05-18T12:53:39Z
dc.date.available 2017-05-18T12:53:39Z
dc.date.issued 2016
dc.identifier.citation Blaski, Greg (2016) Investigation into the use of variable speed drives to damp mechanical oscillations, University of Witwatersrand, Johannesburg, <http://wiredspace.wits.ac.za/handle/10539/22665>
dc.identifier.uri http://hdl.handle.net/10539/22665
dc.description Research report to School of Electrical and Information Engineering en_ZA
dc.description.abstract An investigation was conducted into how a variable speed drive can provide a damping torque when mechanical oscillations are present. The modeling of mechanical oscillations via an analogous electrical circuit was performed. Simulation was used to demonstrate how a variable speed drive is able to damp speed oscillations using Direct Torque Control (DTC). Damping of mechanical oscillations is done by means of the variable speed drive providing a damping torque component that is in-phase with the speed deviation. The simulation showed that by applying a small torque component with the speed variation results in torque oscillations being damped by 60% after the initial disturbance. Damping is further improved by applying a torque component equal to the speed variation resulting in the oscillations being damped by 80% when compared to the initial disturbance. en_ZA
dc.format.extent Online resource (x, 82 leaves)
dc.language.iso en en_ZA
dc.subject.lcsh Variable speed drives
dc.subject.lcsh Damping (Mechanics)
dc.subject.lcsh Electric waves--Damping
dc.subject.lcsh Oscillations
dc.title Investigation into the use of variable speed drives to damp mechanical oscillations en_ZA
dc.type Thesis en_ZA
dc.description.librarian MT2017 en_ZA


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