Three-phase four-leg active power quality conditioner without references calculation

Due to the use of diverse electric loads, the power quality problem in the power distribution systems can be very complex, especially in three-phase three-wire or four-wire distribution systems. This paper proposes a unified power quality conditioner (UPQC) with one cycle control (OCC) that has the functions of harmonic suppression, reactive power compensation, unbalanced load correction, and source neutral/zero-sequence current limitation. The advantages of this UPQC include no need for reference calculation, vector operation, and flexible structure for three-wire or four-wire system. Experimental and simulation results from a prototype confirmed the feasibility of the proposed approach.

[1]  Ned Mohan,et al.  A four-wire, current-controlled converter provides harmonic neutralization in three-phase, four-wire systems , 1993, Proceedings Eighth Annual Applied Power Electronics Conference and Exposition,.

[2]  H. Akagi,et al.  A practical approach to harmonic compensation in power systems-series connection of passive and active filters , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[3]  A. Nava-Segura,et al.  A novel four-branches-inverter-based-active-filter for harmonic suppression and reactive compensation of an unbalanced three-phase four-wires electrical distribution systems, feeding AC/DC loads , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[4]  Taotao Jin,et al.  Unified constant-frequency integration control of three-phase active-power-filter with vector operation , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[5]  A. Prasad,et al.  An active power factor correction technique for three-phase diode rectifiers , 1989, 20th Annual IEEE Power Electronics Specialists Conference.

[6]  Po-Tai Cheng,et al.  Design of a neutral harmonic mitigator for three-phase four-wire distribution systems , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[7]  K.M. Smedley,et al.  One-cycle control of switching converters , 1991, PESC '91 Record 22nd Annual IEEE Power Electronics Specialists Conference.

[8]  Mauricio Aredes,et al.  An universal active power line conditioner , 1998 .

[9]  S. Saetieo,et al.  The design and implementation of a three-phase active power filter based on sliding mode control , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[10]  S. J. Chiang,et al.  Parallel operation of three-phase four-wire active power filters without control interconnection , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[11]  S. Saetieo,et al.  The design and implementation of a three-phase active power filter based on sliding mode control , 1994 .

[12]  Hirofumi Akagi,et al.  An active circuit for cancellation of common-mode voltage generated by a PWM inverter , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[13]  Taotao Jin,et al.  Operation of unified constant-frequency integration controlled three-phase active power filter with unbalanced load , 2003, Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03..