A novel single-phase power quality conditioner and its control strategy

A novel single-phase power quality conditioner (PQC) is presented in this paper. The proposed PQC is composed of a series active power filter (APF) and shunt passive filters connected in series to a low rating PWM converter through a coupling transformer. The series APF and PWM converter are operated from a common dc link provided by a dc storage capacitor. The proposed PQC is able to isolate the distortion between the load and the source, regulate the load voltage, and correct the load power factor displacement with a negligible distortion of the load voltage. Moreover, the PQC can realize the fault current limitation with the appropriate design and control. A detailed control strategy for the PQC is introduced in this paper. The capabilities of the proposed PQC and its control strategy are tested in a simple system (a nonlinear load is supplied by a sinusoidal or nonsinusoidal voltage source through a feeder) through digital simulations. The simulation results verify the viability and effectiveness of the proposed PQC.

[1]  Hirofumi Akagi,et al.  Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components , 1984, IEEE Transactions on Industry Applications.

[2]  Juan Dixon,et al.  Series active power filter compensates current harmonics and voltage unbalance simultaneously , 2000 .

[3]  Chin-Yuan Hsu,et al.  A new single-phase active power filter with reduced energy storage capacitor , 1995, Proceedings of PESC '95 - Power Electronics Specialist Conference.

[4]  C. Y. Hsu,et al.  A new single-phase active power filter with reduced energy-storage capacity , 1996 .

[5]  Juan W. Dixon,et al.  A series active power filter based on a sinusoidal current-controlled voltage-source inverter , 1997, IEEE Trans. Ind. Electron..

[6]  Hirofumi Akagi,et al.  New trends in active filters for power conditioning , 1996 .

[7]  Luis Morán,et al.  Control system for three-phase active power filter which simultaneously compensates power factor and unbalanced loads , 1995, IEEE Trans. Ind. Electron..

[8]  Fang Zheng Peng,et al.  A New Approach to Harmonic Compensation in Power Systems , 1989 .

[9]  Jin-Sun Kim,et al.  Three-phase three-wire series active power filter, which compensates for harmonics and reactive power , 2004 .

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

[11]  H. Akagi,et al.  A new approach to harmonic compensation in power systems , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[12]  Qiaofu Chen,et al.  A novel active power filter with fundamental magnetic flux compensation , 2004 .

[13]  Jul-Ki Seok,et al.  Control of series active power filters compensating for source voltage unbalance and current harmonics , 2004, IEEE Transactions on Industrial Electronics.

[14]  A. Campos,et al.  Analysis and design of a series voltage unbalance compensator based on a three-phase VSI operating with unbalanced switching functions , 1992 .