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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15026
Title: Dynamic Performance of Doubly Fed Hydroelectric Machines under Voltage Unbalance - A Relative Electrothermomechanical Analysis
Authors: Singh R.R.
Selvaraj R.
Mohan H.
Chelliah, Thanga Raj
Published in: IEEE Transactions on Industry Applications
Abstract: Deployment of renewable energy sources in power grid causes an undesirable characteristic in the voltage profile due to its stochastic nature. Such electrical perturbations may impact the performance of equipment or machines connected to the grid, especially large rated machines (e.g., 250 MW). This paper investigates the electrical, thermal, and mechanical stresses on large rated doubly fed synchronous (fixed speed) and doubly fed asynchronous (variable speed) machines used in pumped storage power plants under voltage unbalance. Also, the lifespan of the drive train considering thermal stress is estimated. In this paper, considering the medium voltage distribution system (15.75 kV), the magnitude of voltage unbalance is opted as 2.5% and 5% to test the performance of doubly fed machines. With respect to these considerations, the impacts on machine parameters such as rotor current, stator current, input power, torque, and losses are comprehensively investigated. To observe the performance of large rated doubly fed machine drive system under voltage unbalances, the MATLAB/Simulink environment is adopted. Also, to realize the real-time impact on doubly fed machines, a prototype rig (with 2.2-kW synchronous and asynchronous machines) are experimented. The practical significance of this relative analysis is to minimize voltage collapse in the system and for developing the robust system with countermeasures. © 1972-2012 IEEE.
Citation: IEEE Transactions on Industry Applications (2018), 54(5): 4156-4166
URI: https://doi.org/10.1109/TIA.2018.2833798
http://repository.iitr.ac.in/handle/123456789/15026
Issue Date: 2018
Publisher: Institute of Electrical and Electronics Engineers Inc.
Keywords: Doubly fed asynchronous machine (DFAM)
doubly fed synchronous machine (DFSM)
electrical analysis
mechanical analysis
pumped storage power plant (PSPP)
thermal analysis
voltage unbalance
ISSN: 939994
Author Scopus IDs: 56161699600
57193957098
57200088787
35755335100
Author Affiliations: Singh, R.R., Department of Energy and Power Electronics, Vellore Institute of Technology, Vellore, 632014, India
Selvaraj, R., Hydropower Simulation Laboratory of Water Resources Development and Management Department, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Mohan, H., Hydropower Simulation Laboratory of Water Resources Development and Management Department, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Chelliah, T.R., Hydropower Simulation Laboratory of Water Resources Development and Management Department, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Funding Details: Manuscript received December 2, 2017; revised March 15, 2018; accepted April 13, 2018. Date of publication May 6, 2018; date of current version September 17, 2018. Paper 2017-EMC-1248.R1, presented at IEEE India International Conference on Power Electronics, Patiala, India, Nov. 17–19, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Electric Machines Committee of the IEEE Industry Applications Society. This work was supported by the Central Power Research Institute, Government of India (CPR-949-WRC). (Corresponding author: R. Raja Singh.) R. Raja Singh is with the Department of Energy and Power Electronics, Vellore Institute of Technology, Vellore 632014, India (e-mail:, rrajasingh@ gmail.com).
Corresponding Author: Singh, R.R.; Department of Energy and Power Electronics, Vellore Institute of TechnologyIndia; email: rrajasingh@gmail.com
Appears in Collections:Journal Publications [WR]

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