Sliding Mode Control of Unified Power Quality Conditioner for 3 Phase 4 Wire Systems

This paper presents the sliding mode control (SMC) of unified power quality conditioners (UPQC) intended to compensate power quality issues in three-phase four-wires systems. The SMC UPQC can be applied in electrical grids or isolated grids to mitigate power quality problems at the consumer facilities and also to minimize issues for the grid supplier. The UPQC is configured as a shunt-series filter. The shunt Active Power Filter (APF) uses a three-phase rectifier with SMC to enforce sinusoidal mains currents. The series APF uses three single-phase H-bridge inverters and SMC to improve the voltage quality at the point of common coupling. SMC design, analysis and simulation results are presented and discussed.

[1]  B. G. Fernandes,et al.  PLL-Less Active Power Filter Based on One-Cycle Control for Compensating Unbalanced Loads in Three-Phase Four-Wire System , 2007, IEEE Transactions on Power Delivery.

[2]  J. F. Silva.  PWM audio power amplifiers: sigma delta versus sliding mode control , 1998, 1998 IEEE International Conference on Electronics, Circuits and Systems. Surfing the Waves of Science and Technology (Cat. No.98EX196).

[3]  J. Fernando A. da Silva,et al.  A novel and simple current controller for three-phase PWM power inverters , 1998, IEEE Trans. Ind. Electron..

[4]  Sonia F. Pinto,et al.  Advanced Control of Switching Power Converters , 2011 .

[5]  S. S. Dash,et al.  Design of Unified Power Quality conditioner (UPQC) to improve the power quality problems by using P-Q theory , 2012, 2012 International Conference on Computer Communication and Informatics.

[6]  Jon Are Suul,et al.  Understanding of tuning techniques of converter controllers for VSC-HVDC , 2008 .

[7]  J. Fernando Silva,et al.  Space vector alpha-beta sliding mode current controllers for three-phase multilevel inverters , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[8]  V. Khadkikar,et al.  Enhancing Electric Power Quality Using UPQC: A Comprehensive Overview , 2012, IEEE Transactions on Power Electronics.

[9]  Yong Kang,et al.  DC voltage control for the three-phase four-wire Shunt split-capacitor Active Power Filter , 2009, 2009 IEEE International Electric Machines and Drives Conference.

[10]  P. E. Battaiotto,et al.  Wind Farm to Weak-Grid Connection using UPQC custom power device , 2010, 2010 IEEE International Conference on Industrial Technology.