Mohamed ABBES

Fault-tolerant control of a PMSG-based wind turbine based on parallel interleaved converters

Lowering the cost of wind energy has been one of the main objectives of the wind industry in the past years.To achieve this objective, considerable research efforts have been made to improve the availability of wind turbines.Recent statistical analyses have shown that frequency converters are among the most frequently failing components forvariable speed wind systems. Therefore, several configurations were proposed in the literature to improve the availabilityof these generating devices. These configurations are mainly based on the redundancy of power converters (active andstandby) or the converter bypass technique. However, for the special case of PMSG-based wind turbines, the powerelectronic subsystem cannot be bypassed and redundancy will significantly increase the cost of the overall structure sincefully rated converters are used. Therefore, this paper proposes a new design for PMSG-based wind turbines based onparallel interleaved converters and a fault-tolerant control strategy. In the proposed configuration, the generator-sideand the grid-side converters are made with two parallel interleaved converters with separate DC links. The design isintended to offer continuity of service in the event of converter failure with low additional costs. The design, simulation,and advantages of the proposed configuration are detailed throughout the paper.

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[1] Fischer K, Besnard F, Bertling L. Reliability-centered maintenance for wind turbines based on statistical analysis and practical experience. IEEE Transactions on Energy Conversion 2012; 27: 184-195.
[2] Pfaffel S, Faulstich S, Rohrig K. Performance and reliability of wind turbines: a review. Energies 2017; 10: 1-27.
[3] Pelka K, Fischer K. Failure behaviour of power converters in wind turbines. In: German Wind Energy Conference; Bremen, Germany; 2017. pp. 1-5.
[4] Odgaard PF, Stoustrup J, Kinnaert M. Fault-tolerant control of wind turbines: a benchmark model. IEEE Transactions on Control Systems Technology 2013; 21: 1168–1181.
[5] El-Shimy M. Wind Energy Conversion Systems: Reliability Perspective. Encyclopedia of Energy Engineering and Technology. New York, NY, USA: CRC Press, 2015.
[6] El-Shimy M. Alternative configurations for induction-generator based geared wind turbine systems for reliability and availability improvement. In: Proceedings of the 14th International Middle East Power Systems Conference; Cairo, Egypt; 2010. pp. 538-543.
[7] Moujahed M, Ben Azza H, Frifita K, Jemli M, Boussak M. Fault detection and fault-tolerant control of power converter fed PMSM. Electrical Engineering 2016; 98: 121-131.
[8] Okedu K. Enhancing DFIG wind turbine during three-phase fault using parallel interleaved converters and dynamic resistor. IET Renewable Power Generation 2016; 10: 1211–1219.
[9] Quan Z, Li Yun W. Suppressing zero-sequence circulating current of modular interleaved three-phase converters using carrier phase shift PWM. IEEE Transactions on Industry Applications 2017; 53: 3782-3792.
[10] Knudsen H, Nielsen N, Ackermann T. Wind Power in Power Systems. Chichester, UK: John Wiley, 2005.
[11] Boldea I. Synchronous Generators. New York, NY, USA: CRC Press, 2006.
[12] Ewanchuk J, Salmon J. Three-limb coupled inductor operation for paralleled multi-level three-phase voltage sourced inverters. IEEE Transactions on Industrial Electronics 2013; 60: 1979–1988.
[13] Lakhsmi S, Raja SR. Observer-based controller for current mode control of an interleaved boost converter. Turkish Journal of Electrical Engineering and Computer Sciences 2014; 8: 341–352.
[14] Gohil G, Bede L, Teodorescu R, Kerekes T, Blaabjerg F. Flux balancing scheme for PD modulated parallel interleaved inverters. IEEE Transactions on Power Electronics 2017; 32: 3442–3457.
[15] Laka A, Barrena JA, Zabalza JC, Vidal R, Izurza-Moreno P. Isolated double-twin VSC topology using three-phase IPTs for high-power applications. IEEE Transactions on Power Electronics 2014; 29: 5761-5769.
[16] Abbes M, Allagui M. Centralized control strategy for energy maximization of large array wind turbines. Sustainable Cities and Society 2016; 25: 82-89.
[17] Huerta F, Pérez J, Cóbreces S, Rizo M. Frequency-adaptive multiresonant LQG state-feedback current controller for LCL-filtered VSCs under distorted grid voltages. IEEE Transactions on Industrial Electronics 2018; 65: 8433-8444.
[18] Qiao W, Yang X, Gong X. Wind speed and rotor position sensorless control for direct-drive PMG wind turbines. IEEE Transactions on Industry Applications 2012; 48: 3-11.
[19] Yang J, Song D, Han H, Tong P, Zhou L. Integrated control of fuzzy logic and model-based approach for variablespeed wind turbine. Turkish Journal of Electrical Engineering and Computer Sciences 2015; 23: 1715–1734.
[20] Abbes M, Allagui M, Hasnaoui O. An aggregate model of PMSG-based, grid connected wind farm: investigation of LVRT capabilities. In: Sixth International Renewable Energy Congress; Sousse, Tunisia; 2015.
[21] Levine WS. The Control Handbook. Boca Raton, FL, USA: CRC Press, 2005.
[22] Huerta F, Pizarro D, Cobreces S, Rodriguez FJ, Girón C et al. LQG servo controller for the current control of LCL grid-connected voltage-source converters. IEEE Transactions on Industrial Electronics 2012; 59: 4272-4284.
[23] Busca C, Teodorescu R, Blaabjerg F, Munk-Nielsen S, Helle L et al. An overview of the reliability prediction related aspects of high power IGBTs in wind power applications. Microelectronics Reliability 2011; 51: 1903-1907.
[24] Wu R, Blaajberg F, Wang H, Liserre M. Catastrophic failure and fault-tolerant design of IGBT power electronic converters - An overview. In: 39th Annual Conference of the IEEE Industrial Electronics Society; Vienna, Austria; 2013. pp. 507-513.