Low voltage ride-through strategies for doubly fed induction machine pumped storage system under grid faults |
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| Affiliation: | 1. Université de Tunis El Manar, Ecole Nationale d''Ingénieurs de Tunis, LR11ES15 Laboratoire des Systèmes Electriques, 1002, Tunis, Tunisie;2. Université Fédérale de Toulouse Midi-Pyrénées, INPT, UPS, LAPLACE, 2 Rue Charles Camichel, BP 7122, F-31071, Toulouse Cedex 7, France;1. School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China;2. Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, IL 61801, USA;1. Centre for Energy and Environment, Malaviya National Institute of Technology, Jaipur, 302017, India;2. Civil Engineering Department, Malaviya National Institute of Technology, Jaipur, 302017, India;1. School of Resource and Environmental Engineering, Anhui University, Hefei 230601, China;2. CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China, Hefei, 230026, China;1. Molecular Biochemistry Laboratory, Materials and Surface Science Institute, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland;2. Department of Chemical Engineering, SSN College of Engineering, Kalavakkam, Tamilnadu, India;1. University School of Chemical Technology, GGS IP University, Delhi, India;2. Department of Chemical Engineering, IIT, Delhi, India |
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| Abstract: | Pumped storage units bring stability to the electrical power system, so they must remain connected to the grid even during grid faults. In this paper, the authors propose efficient and simple solutions for a doubly fed induction machine pumped storage (DFIMPS) system during grid faults. In case of balanced grid faults, a control reconfiguration strategy is introduced and a hardware solution is applied in the case of unbalanced grid faults. The reconfiguration strategy consists of a commutation between different control strategies; when a balanced grid voltage fault occurs during pumping mode, the control algorithm switches to the synchronization one but based on the new grid conditions. So the proposed reconfiguration method reduces the negative impacts of grid fault occurrence on the DFIMPS system by cancelling rotor and stator over-currents and decreasing the electromagnetic torque and stator power oscillations. Simulation results carried out on a 4 kW DFIMPS system illustrate the effectiveness of the proposed approach. |
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| Keywords: | Doubly fed induction machine Pumped storage system Control strategy Grid faults Reconfiguration |
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