MODELING MODELINGAND PARAMETER EXTRACTION OF A AND PARAMETER EXTRACTION OF A 214 MVA TURBO- 214 MVA TURBO-GENERATOR DRIVEN BY DC GENERATOR DRIVEN BY DC MOTORS DURING OFF- MOTORS DURING OFF-LI

  • Type: Project
  • Department: Electrical Engineering
  • Project ID: ELE0513
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  • Pages: 96 Pages
  • Format: Microsoft Word
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Abstract

This thesis aims to extract d-axis machine parameters of a 214 MVA high-speed turbogenerator using well-established offline techniques. MATLAB/SIMULINK tool has been utilized to model the generator and perform sudden short-circuit (SSC) tests. Because constant speed operation of the generator is vital consideration for the accuracy of SSC tests for parameter extraction, this thesis has employed an arrangement of 2 DC motors operating alongside a drive system, which is configured to couple the combined motor to drive the shaft of the generator to maintain synchronous speed throughout the test. Simulating the different drive configurations, the SSC oscillographs were captured and transformed into symmetrical envelope waveforms which were then used to extract the operational impedances and time constants of the generator. From the simulation tests, the influence of speed departures on shaft torques and current waveforms were presented and analysed. The results obtained for the variable-speed simulation using the drive system were then validated with those calculated from standard equations, as well as those of the constant-speed mode. The test results confirm that SSC tests can be performed on synchronous machines under rated conditions if the couplings can be appropriately designed to contain the dangerous values of electromagnetic torque that are developed during such tests. In addition, an electronic switch was designed to manage the abnormal field current which results from the introduction of SSC currents. In the end, the switching contraption is seen to reduce the power losses in the machine’s field winding during SSC. 

MODELING MODELINGAND PARAMETER EXTRACTION OF A AND PARAMETER EXTRACTION OF A 214 MVA TURBO- 214 MVA TURBO-GENERATOR DRIVEN BY DC GENERATOR DRIVEN BY DC MOTORS DURING OFF- MOTORS DURING OFF-LI
For more Info, call us on
+234 8130 686 500
or
+234 8093 423 853

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  • Type: Project
  • Department: Electrical Engineering
  • Project ID: ELE0513
  • Access Fee: ₦5,000 ($14)
  • Pages: 96 Pages
  • Format: Microsoft Word
  • Views: 287
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    Details

    Type Project
    Department Electrical Engineering
    Project ID ELE0513
    Fee ₦5,000 ($14)
    No of Pages 96 Pages
    Format Microsoft Word

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