Implementation and Simulation of a Modified PWM with Two Current Control Techniques Applied To A Single-Phase Shunt Hybrid Power Filter

In this paper, direct and indirect current control strategies are applied to a single-phase shunt hybrid power filter (SPSHPF). They are implemented with a modified pulse width modulation (M-PWM) in order to compensate the harmonics and reactive power generated by non-linear loads and the high frequency harmonics generated by the switching process. Contrarily to the existing methods, the proposed indirect current control eliminates switching spikes in the supply current and appears to be more suitable than the direct current control method, especially when compensation is required. Furthermore, the M-PWM technique ensures the elimination of all groups of harmonics that are centered on the odd multiples of the switching frequency. It requires a relatively reduced input filter. In addition, it attenuates the rays that are located around twice the switching frequency four times less than the S-PWM. The measured power losses of the M-PWM hybrid filter are also four times lower compared to the standard PWM control. Experiment results obtained from a 1 kVA laboratory system and simulations carried on using the power system blockset (PSB) toolbox of Matlab verify the effectiveness of the SPSHPF adopting the indirect current control with the modified PWM technique

[1]  Joachim Holtz.  Pulsewidth modulation-a survey , 1992, IEEE Trans. Ind. Electron..

[2]  Peter J. Wolfs,et al.  Analysis and design of a multiple-loop control system for a hybrid active filter , 2002, IEEE Trans. Ind. Electron..

[3]  Chen Guozhu,et al.  The design and implement of series hybrid active power filter for variable nonlinear loads , 2000, Proceedings IPEMC 2000. Third International Power Electronics and Motion Control Conference (IEEE Cat. No.00EX435).

[4]  Juan Dixon,et al.  A fuzzy-controlled active front-end rectifier with current harmonic filtering characteristics and minimum sensing variables , 1999 .

[5]  K. Al-Haddad,et al.  A Comparative Study of Two PWM Techniques for Single-Phase Shunt Active Power Filters Employing Direct Current Control Strategy , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[6]  Hadi Youssef Kanaan,et al.  A comparative study of shunt hybrid and shunt active power filters for single-phase applications: Simulation and experimental validation , 2006, Math. Comput. Simul..

[7]  J.D. Van Wyk,et al.  Modelling of a power network compensated by hybrid power filters with different distorted loads , 2000, Ninth International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.00EX441).

[8]  R. W. De Doncker,et al.  A new hybrid filter to dampen resonances and compensate harmonic currents in industrial power systems with power factor correction equipment , 2001 .

[9]  Peter Wolfs,et al.  Hybrid active filter for harmonically unbalanced three phase three wire railway traction loads , 2000 .

[10]  J. Espinoza,et al.  A simple control scheme for hybrid active power filter , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[11]  Hirofumi Akagi,et al.  Active and hybrid filters for power conditioning , 2000, ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543).

[12]  Subhashish Bhattacharya,et al.  Synchronous frame based controller implementation for a hybrid series active filter system , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[13]  K. Karthik,et al.  Voltage compensation and harmonic suppression using series active and shunt passive filters , 2000, 2000 Canadian Conference on Electrical and Computer Engineering. Conference Proceedings. Navigating to a New Era (Cat. No.00TH8492).

[14]  K. Al-Haddad,et al.  Bipolar reference for PWM control of a single-phase shunt hybrid power filter , 2003, 2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692).

[15]  Hirofumi Akagi,et al.  Compensation characteristics of shunt active and series active power filters , 1993 .

[16]  Soo-Bin Han,et al.  A current control scheme based on multiple synchronous reference frames for parallel hybrid active filter , 2000, Proceedings IPEMC 2000. Third International Power Electronics and Motion Control Conference (IEEE Cat. No.00EX435).

[17]  Xinjian Jiang,et al.  Study on the performance of the combined power filter with unsymmetrical condition , 2000, Proceedings IPEMC 2000. Third International Power Electronics and Motion Control Conference (IEEE Cat. No.00EX435).

[18]  V. S. Ramsden,et al.  Hybrid filter control system with adaptive filters for selective elimination of harmonics and interharmonics , 2000 .

[19]  Hirofumi Akagi,et al.  The unified power quality conditioner: the integration of series- and shunt-active filters , 1998 .

[20]  F. Fnaiech,et al.  A new control technique based on the instantaneous active current applied to shunt hybrid power filters , 2003, IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03..

[21]  Kwanghee Nam,et al.  New hybrid parallel active filter configuration minimising active filter size , 2000 .

[22]  David A. Torrey,et al.  A passive series, active shunt filter for high power applications , 2001 .

[23]  Kamal Al-Haddad,et al.  A review of active filters for power quality improvement , 1999, IEEE Trans. Ind. Electron..

[24]  Hirofumi Akagi,et al.  A hybrid active filter for damping of harmonic resonance in industrial power systems , 1998, PESC 98 Record. 29th Annual IEEE Power Electronics Specialists Conference (Cat. No.98CH36196).