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Finite element analysis of actively controlled heavy rotor using PVDF piezoelectric layer as sensor and actuator
  • Tarun Kumar,
  • Rajeev Kumar,
  • Satish Jain
Tarun Kumar
Indian Institute of Technology Mandi, Indian Institute of Technology Mandi
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Rajeev Kumar
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Satish Jain
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Peer review status:Published

31 Jan 2020Submitted to Engineering Reports
03 Feb 2020Submission Checks Completed
03 Feb 2020Assigned to Editor
23 Apr 2020Reviewer(s) Assigned
25 May 2020Editorial Decision: Revise Major
31 May 20201st Revision Received
02 Jun 2020Submission Checks Completed
02 Jun 2020Assigned to Editor
02 Jun 2020Reviewer(s) Assigned
14 Jun 2020Editorial Decision: Revise Minor
24 Jun 20202nd Revision Received
24 Jun 2020Submission Checks Completed
24 Jun 2020Assigned to Editor
24 Jun 2020Editorial Decision: Accept
30 Jul 2020Published in Engineering Reports. 10.1002/eng2.12244

Abstract

Reduction in the torsional vibration of heavy rotors like turbo-generator rotor is important for the safe and efficient functioning of the power plant. In this paper theoretical study is performed to control the torsional vibration in the turbo-generator rotor using piezoelectric material as sensor and actuator. Polyvinylidene fluoride (PVDF) layer is used as sensor and actuator. Proportional and velocity feedback is used as control law. The variation in the electromagnetic torque of synchronous generator during various electrical faults is evaluated using dq0 model. Finite element method is used to model the rotor elements. The coupled equations are solved in MATLAB using Newmark-beta integration method. The coupling elements of turbine and generator are most susceptible to the shear failure so torsional vibration of coupled rotor on coupling elements are compare for controlled and uncontrolled scenario. Simulation results show that for actively controlled rotor significant reduction in the amplitude of torsional vibrations is observed.