Document Type : Research Articles
Authors
Department of Electrical Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran.
Abstract
The use of DFIG-DC systems without stator voltage and current sensors has gained attention due to reduced costs and simplified control. However, diode rectifiers in these systems introduce current harmonics, degrading power quality and limiting performance at higher power levels. This study proposes a new structure for DFIG-DC systems, replacing the conventional two-level inverter with a T-type converter to address these issues.
The proposed system uses a T-type converter to enhance voltage levels, reducing current harmonics and improving power quality. It also eliminates stator voltage and current sensors, simplifying the control system and reducing costs. Performance analysis through MATLAB/Simulink simulations demonstrated the effectiveness of the proposed system compared to conventional methods.
The proposed DFIG-DC system with a T-type converter offers a cost-effective and efficient solution for reducing current harmonics and improving power quality. Its simplified control system and enhanced performance make it a promising approach for high-power applications in wind energy systems and other industrial uses. These findings highlight the system’s potential for improving reliability and operational efficiency in renewable energy and industrial applications.
Keywords
Main Subjects
[2] R. Zhang et al., "Protection and Power Smoothing of a DFIG/DC Microgrid Hybrid Power System With SMESBased Unified Power Quality Conditioner," in IEEE Transactions on Applied Superconductivity, vol. 34, no. 8, pp. 1-5, Nov. 2024, Art no. 5401005, doi: 10.1109/TASC.2024.3425322.
[3] G. D. Marques and M. F. Iacchetti, "Minimization of Torque Ripple in the DFIG-DC System Via Predictive Delay Compensation," in IEEE Transactions on Industrial Electronics, vol. 65, no. 1, pp. 103-113, Jan. 2018, doi: 10.1109/TIE.2017.2716860.
[4] C. Wu, P. Cheng, H. Nian and F. Blaabjerg, "Rotor Current Oriented Control Method of DFIG-DC System Without Stator Side Sensors," in IEEE Transactions on Industrial Electronics, vol. 67, no. 11, pp. 9958-9962, Nov. 2020, doi: 10.1109/TIE.2019.2956415.
[5] A. Verma and A. K. Jain, "A Dual-VSI DFIG-Dc Voltage Generation System Based on Series Connected Dc-Link," in IEEE Transactions on Industrial Electronics, vol. 71, no. 11, pp. 13670-13681, Nov. 2024, doi: 10.1109/TIE.2024.3363760.
[6] C. Wu, D. Zhou and F. Blaabjerg, "Direct Power Magnitude Control of DFIG-DC System Without Orientation Control," in IEEE Transactions on Industrial Electronics, vol. 68, no. 2, pp. 1365-1373, Feb. 2021, doi: 10.1109/TIE.2020.2970666.
[7] C. Wu and H. Nian, "Sinusoidal Current Operation of a DFIG-DC System Without Stator Voltage Sensors," in IEEE Transactions on Industrial Electronics, vol. 65, no. 8, pp. 6250-6258, Aug. 2018, doi: 10.1109/TIE.2017.2786259.
[8] C. Wu, D. Zhou, P. Cheng and F. Blaabjerg, "A Novel Power-Angle Control Method of DFIG-DC System Based on Regulating Air Gap Flux Vector," in IEEE Transactions on Power Electronics, vol. 36, no. 1, pp. 513-521, Jan. 2021, doi: 10.1109/TPEL.2020.3001967.
[9] C. Wu and H. Nian, "Improved Direct Resonant Control for Suppressing Torque Ripple and Reducing Harmonic Current Losses of DFIG-DC System," in IEEE Transactions on Power Electronics, vol. 34, no. 9, pp. 8739-8748, Sept. 2019, doi: 10.1109/TPEL.2018.2888599.
[10] Y. Xiao, B. Fahimi, M. A. Rotea and Y. Li, "Multiple Reference Frame-Based Torque Ripple Reduction in DFIG-DC System," in IEEE Transactions on Power Electronics, vol. 35, no. 5, pp. 4971-4983, May 2020, doi: 10.1109/TPEL.2019.2941957.
[11] X. Wang, D. Sun and Z. Q. Zhu, "Resonant-Based Backstepping Direct Power Control Strategy for DFIG Under Both Balanced and Unbalanced Grid Conditions," in IEEE Transactions on Industry Applications, vol. 53, no. 5, pp. 4821-4830, Sept.-Oct. 2017, doi: 10.1109/TIA.2017.2700280.
[12] G. D. Marques and M. F. Iacchetti, "DFIG Topologies for DC Networks: A Review on Control and Design Features," in IEEE Transactions on Power Electronics, vol. 34, no. 2, pp. 1299-1316, Feb. 2019, doi: 10.1109/TPEL.2018.2829546.
[13] S. Bhattacharyya, S. Puchalapalli and B. Singh, "Operation of Grid-Connected PV-Battery-Wind Driven DFIG Based System," in IEEE Transactions on Industry Applications, vol. 58, no. 5, pp. 6448-6458, Sept.-Oct. 2022, doi: 10.1109/TIA.2022.3181124.
[14] S. Das and B. Singh, "Normalized Maximum Correntropy Criterion Based Ripple Mitigation Strategy for Wind Solar Hybrid Generation System Under Nonideal Grid Conditions," in IEEE Transactions on Power Electronics, vol. 38, no. 1, pp. 956-967, Jan. 2023, doi: 10.1109/TPEL.2022.3199387
[15] S. Das and B. Singh, "Islanding Operation and Seamless Resynchronization in DFIG–SPV System Equipped With Functional Enhancements Through ATLLAD Control Framework," in IEEE Transactions on Power Electronics, vol. 38, no. 6, pp. 7634-7643, June 2023, doi: 10.1109/TPEL.2023.3259443 .
[16] M. Lak, B. -R. Chuang and T. -L. Lee, "A Common-Mode Voltage Elimination Method With Active Neutral Point Voltage Balancing Control for Three-Level T-Type Inverter," in IEEE Transactions on Industry Applications, vol. 58, no. 6, pp. 7499-7514, Nov.-Dec. 2022, doi: 10.1109/TIA.2022.3201175.
[17] A. Sheir, M. Z. Youssef and M. Orabi, "A Novel Bidirectional T-Type Multilevel Inverter for Electric Vehicle Applications," in IEEE Transactions on Power Electronics, vol. 34, no. 7, pp. 6648-6658, July 2019, doi: 10.1109/TPEL.2018.2871624.
[18] Kenneth E. Okedu, "Augmenting DFIG wind turbine transient performance using alternative voltage source Ttype grid side converter, "Renewable Energy Focus, vol.18,2017,Pages 1-10,ISSN 1755-0084,https://doi.org/10.1016/j.ref.2017.02.004.
[19] Sánchez Vargas, Oscar, Luis Gerardo Vela Valdés, Monica Borunda, Ricardo Eliú Lozoya-Ponce, Jesus Aguayo Alquicira, and Susana Estefany De León Aldaco. 2024. "ANFIS-PSO-Based Optimization for THD Reduction in Cascaded Multilevel Inverter UPS Systems" Electronics 13, no. 22: 4456.
[20] Y. El. Khlifi, A. El. Magri, A. Mansouri, R. Lajouad, " Enhanced low voltage ride-through control of multilevel flying capacitor inverter based wind generation," Indonesian Journal of Electrical Engineering and Computer Science, vol.33,no.6, pp.: 854-861,Feb. 2024. DOI:10.11591/ijeecs.v33.i2.pp854-861.
[21] H. Misra and A. K. Jain, "Analysis of Stand-Alone DFIGDC System and DC Voltage Regulation With Reduced Sensors," in IEEE Transactions on Industrial Electronics, vol. 64, no. 6, pp. 4402-4412, June 2017, doi: 10.1109/TIE.2017.
[22] C. Wu, H. Nian, B. Pang and P. Cheng, "Adaptive Repetitive Control of DFIG-DC System Considering Stator Frequency Variation," in IEEE Transactions on Power Electronics, vol. 34, no. 4, pp. 3302-3312, Apr. 2019, doi: 10.1109/TPEL.2018.2854261.
[23] C. Wu, Y. Jiao, H. Nian and F. Blaabjerg, "A Simplified Stator Frequency and Power Control Method of DFIG-DC System Without Stator Voltage and Current Sensors," in IEEE Transactions on Power Electronics, vol. 35, no. 6, pp. 5562-5566, June 2020, doi: 10.1109/TPEL.2019.2953677.
[24] D.Zhou, F. Blaabjerg,, "Bandwidth oriented proportionalintegral controller design for back-to-back power converters in DFIG wind turbine system, " IET Renewable Generation, Vol.11, no.7, pp. 941-951, June. 2017, doi:org/10.1049/iet-rpg.2016.0760.
)