The Application of Sliding Mode Control in Current Source Converter

Abstract:

Current source converter is a variable structure system due to its switching nature, so that it can easily cause the output current waveform distortion and can not be accurately track the reference current. To solve the above problems, this paper proposes a new variable structure control strategy with fan-shaped sliding domain in the current source converter control system. In the control strategy, the paper deduces the switching surface and switching control law of SMVSC, and calculates the sliding existence domain based on the mathematical model of current source converter. Finally, the simulation results show that the control scheme can make current source converter have better output current waveform, fast tracking the reference current, and strong anti-interference ability. Therefore, the control scheme is correct, effective and feasible.

• Periodical: Advanced Materials Research (Volumes 945-949)
• Pages: 2331-2337
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.945-949.2331
• Online since: June 2014
• Authors: Jing Bai, Shi Qi Lu*, Jian Liu
• Keywords: Current Source Converter (CSC), Nonlinear System, Sliding Mode Variable Structure Control, Variable-Rate Reaching Law

References

[1] Zhihong Bai, HaoMa, Dewei (David) Xu and Bin Wu: Control Strategy With a Generalized DC Current Balancing Method for Multimodule Current-Source Converter, IEEE Transactions on Power Electronics, v 29, n 1, pp.366-373, (2014).

DOI: 10.1109/tpel.2013.2252628

[2] J. Dai, D. Xu, B. Wu, and N. R. Zargari: Unified DC-link current control for low-voltage ride-through in current-source-converter-based wind energy conversion systems, IEEE Trans. Power Electron, vol. 26, no. 1, pp.288-297, Jan. (2011).

DOI: 10.1109/tpel.2010.2059377

[3] Amr Ahmed A. Radwan, Yasser Abdel-Rady I: Mohamed. Analysis and Active Suppression of AC- and DC-Side Instabilities in Grid-Connected Current-Source Converter-Based Photovoltaic System, IEEE Transactions on Sustainable Energy, vol. 4, no. 3, pp.630-642, July (2013).

DOI: 10.1109/tste.2012.2230653

[4] K. Wei, Z. Lixia, W. Yansong: Study on output characteristic of bi-direction current source converters, IET Power Electronics, 2011, 5(7): 929-934.

DOI: 10.1049/iet-pel.2011.0267

[5] Popat Miteshkumar, Wu Bin, Zargari Navid R: Fault ride-through capability of cascaded current-source converter-based offshore wind farm, IEEE Transactions on Sustainable Energy, v 4, n 2, pp.314-323, (2013).

DOI: 10.1109/tste.2012.2223246

[6] Jingya Dai, Sang Woo Nam, Manish Pande, Ghodrat Esmaeili: Medium Voltage Current Source Converter Drives for Marine Propulsion System using a Dual-Winding Synchronous Machine, 2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013, pp.7-12, (2013).

DOI: 10.1109/ecce.2013.6646674

[7] Hao Ma, Siliang Han: Time-Dependent sliding surface for novel AC power amplifier, Proceedings of the CSEE, 2005, 25(11): 55-59.

[8] Harbouche Y, Khettache L,  Abdessemed R: Sliding mode control application to the doubly fed asynchronous machine supplied by current sources,. Advances in Modelling and Analysis C, 2009, vol 64, no 1-2, pp.15-26.

[9] Hao Ma, Xuebing Chen, Fei Xu: Observer-Based Discrete-Time Sliding-Mode Control for Single-Phase Current-Source Inverter,. 37th Annual Conference of the IEEE Industrial Electronics Society, IECON 2011, Melbourne, VIC, Australia, 2011: 1492-1496.

DOI: 10.1109/iecon.2011.6119528

[10] Ji Lei, Xu Xia-ling: Modeling of the interharmonic in the current source variable frequency drives, Converter Technology & Electric Traction, 2006, 4(3): 11-14.

[11] Qinghui Yao, Jiqi Huang, Hansong Wu: Variable structure control system,. Chongqing: Chongqing University press, (1997).

[12] Xu Fei, Ma Hao, Zhang Yao: A discrete-time sliding mode controlled current-source inverter used in AC power source,. Proceedings of IEEE 2006 Power Electronics Specialists Conference, Jeju, Korea, 2006: 505-509.

DOI: 10.1109/pesc.2006.1711815

[13] Zhou Dewen, Gao Cunchen, Li Ziqiang: Reaching law of discrete-time variable structure control system,. Control and Decision, 2008, 23(3): 306-309.