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dc.contributor.advisorJohn, Vinod
dc.contributor.authorKumar, Ashish
dc.date.accessioned2018-03-09T18:10:01Z
dc.date.accessioned2018-07-31T04:57:13Z
dc.date.available2018-03-09T18:10:01Z
dc.date.available2018-07-31T04:57:13Z
dc.date.issued2018-03-09
dc.date.submitted2014
dc.identifier.urihttp://etd.iisc.ac.in/handle/2005/3265
dc.identifier.abstracthttp://etd.iisc.ac.in/static/etd/abstracts/4126/G26649-Abs.pdfen_US
dc.description.abstractClosed loop Hall-effect current sensors used in power electronic applications require high bandwidth and small transient errors. For this, the behaviour of a closed loop Hall-e ect current sensor is modeled. Analytical expression of the step response of the sensor using this model is used to evaluate the performance of the PI compensator in the current sensor. Based on this expression a procedure is proposed to design parameters of the PI compensator for fast dynamic performance and for small transient error. A prototype closed loop Hall-effect current sensor is built in the laboratory. A PI compensator based on the procedure devised earlier is designed for the sensor. A power electronic converter based current source is designed and fabricated in the labo-ratory for validation of steady state and transient performance of Hall-effect current sensors. A novel hardware topology is proposed, using which the same hardware set-up can produce both step current and sinusoidal current in its designated sections without any modi cation in the hardware con guration. It produces step current of controlled peak value upto 100A and controlled rate of change with both positive and negative dtdi . The step transition time is less than 200ns. The dtdi is adjustable upto a limit of 300A/ s to verify the dtdi following capability of the sensor. The same current source produces continuous sinusoidal current of controlled magnitude upto 75A peak and controlled frequency from 1Hz to 1000Hz. The magnitude and the frequency of the sinusoidal current can be varied on-line like a voltage function generator. The hardware of the current source is designed to consume minimal ac-tive power from mains during continuous sinusoidal current generation. This current source is used in experimental veri cation of the steady state and the transient performance of the designed laboratory current sensor. The transient performance of the laboratory current sensor is observed to be superior to state-of-the-art commercial current sensors available for power electronic applications.en_US
dc.language.isoen_USen_US
dc.relation.ispartofseriesG26649en_US
dc.subjectHall-Effect Current Sensorsen_US
dc.subjectPower Electronicsen_US
dc.subjectPower Electronic Converteren_US
dc.subjectCurrent Sensingen_US
dc.subjectClosed Loop Hall-Effect Current Sensorsen_US
dc.subjectSinusoidal Currenten_US
dc.subjectCurrent Sensing Techniquesen_US
dc.subject.classificationElectrical Engineeringen_US
dc.titleHall-Effect Current Sensors for Power Electronic Applications : Design and Performance Validationen_US
dc.typeThesisen_US
dc.degree.nameMSc Enggen_US
dc.degree.levelMastersen_US
dc.degree.disciplineFaculty of Engineeringen_US


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