Three-level H-bridge and three H-bridges-based three-phase four-wire shunt active power filter topologies for high voltage applications

Abstract In a three-phase four-wire distribution system, presence of current harmonics, unbalanced loading, reactive power and excessive neutral current play the most important role in deciding power quality. Main culprits behind these are the disturbances caused due to non-linear and unbalanced loads. Here a new three-level H-bridge (3L-HB) topology of three-phase four-wire shunt active power filter (APF) has been developed for load compensation. This can be connected to the distribution lines directly, and does not require any bulky and expensive coupling transformers. Furthermore, this topology of shunt APF has been compared with two-level three H-bridges (3HB) based topology. The performances of APFs are investigated with the help of real-time performance analysis in Opal RT-Lab. A comparison has been made between the two configurations showing their topological differences and load compensation capabilities under ideal, distorted and unbalanced supply voltage conditions. Observations are done taking into consideration the unbalanced loading scenario that is when both three-phase and single-phase loads are present in the system.

[1]  Kamal Al-Haddad,et al.  A new control approach to three-phase active filter for harmonics and reactive power compensation , 1998 .

[2]  Taehyung Kim,et al.  Shunt active filter based on three-level inverter for three-phase four-wire systems , 2009 .

[3]  Anup Kumar Panda,et al.  Particle Swarm Optimization and Bacterial Foraging Optimization Techniques for Optimal Current Harmonic Mitigation by Employing Active Power Filter , 2012, Appl. Comput. Intell. Soft Comput..

[4]  Bhim Singh,et al.  Digital signal processor implementation and performance evaluation of split capacitor, four-leg and three H-bridge-based three-phase four-wire shunt active filters , 2011 .

[5]  P. W. Hammond,et al.  A new approach to enhance power quality for medium voltage AC drives , 1997 .

[6]  O. Vodyakho,et al.  Three-Level Inverter-Based Shunt Active Power Filter in Three-Phase Three-Wire and Four-Wire Systems , 2009, IEEE Transactions on Power Electronics.

[7]  Salah Saad,et al.  Fuzzy logic controller for three-level shunt active filter compensating harmonics and reactive power , 2009 .

[8]  Zwe-Lee Gaing,et al.  A particle swarm optimization approach for optimum design of PID controller in AVR system , 2004 .

[9]  Fang Zheng Peng,et al.  A multilevel voltage-source inverter with separate DC sources for static VAr generation , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

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

[11]  Mauricio Aredes,et al.  Three-phase four-wire shunt active filter control strategies , 1997 .

[12]  Mehmet Uçar,et al.  Control of a 3-phase 4-leg active power filter under non-ideal mains voltage condition , 2008 .

[13]  Fang Zheng Peng,et al.  Multilevel inverters: a survey of topologies, controls, and applications , 2002, IEEE Trans. Ind. Electron..

[14]  Hirofumi Akagi.  Trends in active power line conditioners , 1994 .

[15]  E.R. Cadaval,et al.  Comparison of Control Strategies for Shunt Active Power Filters in Three-Phase Four-Wire Systems , 2007, IEEE Transactions on Power Electronics.

[16]  Fang Zheng Peng,et al.  Cascade multilevel inverters for utility applications , 1997, Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066).

[17]  E. Akpinar,et al.  Evaluation of reference current extraction methods for DSP implementation in active power filters , 2009 .

[18]  D. J. Adams,et al.  A power line conditioner using cascade multilevel inverters for distribution systems , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.