Interline photovoltaic (I-PV) power plants for voltage unbalance compensation

This paper proposes a stationary-frame control method for voltage unbalance compensation using Interline Photovoltaic (I-PV) power system. I-PV power systems are controlled to compensate voltage unbalance autonomously. The control system of I-PV plants mainly consists of active and reactive power droop controllers, voltage and current controllers and unbalance compensator. This approach is based on injecting negative sequence current from I-PV power plants to compensate for the unbalanced loads. Consequently, the Point of Common Coupling (PCC) voltage remains balanced and regulated. The results obtained from Matlab/Simulink based simulation demonstrate the effectiveness of the proposed method in compensation of voltage unbalance at PCC.

[1]  P. Garcia-Gonzalez,et al.  Application of a Repetitive Controller for a Three-Phase Active Power Filter , 2007, IEEE Transactions on Power Electronics.

[2]  Tzung-Lin Lee,et al.  A Cooperative Imbalance Compensation Method for Distributed-Generation Interface Converters , 2007 .

[3]  F. Barrero,et al.  Universal and Reconfigurable to UPS Active Power Filter for Line Conditioning , 2002, IEEE Power Engineering Review.

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

[5]  Poh Chiang Loh,et al.  Microgrid power quality enhancement using a three-phase four-wire grid-interfacing compensator , 2004, IEEE Transactions on Industry Applications.

[6]  V. Agarwal,et al.  A DSP Based Optimal Algorithm for Shunt Active Filter Under Nonsinusoidal Supply and Unbalanced Load Conditions , 2007, IEEE Transactions on Power Electronics.

[7]  Kamal Al-Haddad,et al.  An improved control algorithm of shunt active filter for voltage regulation, harmonic elimination, power-factor correction, and balancing of nonlinear loads , 2000 .

[8]  V. Katic,et al.  Power Quality Problems Compensation With Universal Power Quality Conditioning System , 2007, IEEE Transactions on Power Delivery.

[9]  James L. Kirtley,et al.  Interline Photovoltaic (I-PV) power system — A novel concept of power flow control and management , 2011, 2011 IEEE Power and Energy Society General Meeting.

[10]  B. Banerjee,et al.  Assessment of Voltage Unbalance , 2001, IEEE Power Engineering Review.

[11]  An Luo,et al.  Power Electronic Hybrid System for Load Balancing Compensation and Frequency-Selective Harmonic Suppression , 2012, IEEE Transactions on Industrial Electronics.

[12]  Bhim Singh,et al.  An Implementation of an Adaptive Control Algorithm for a Three-Phase Shunt Active Filter , 2009, IEEE Transactions on Industrial Electronics.

[13]  Yun Wei Li,et al.  A Flexible Harmonic Control Approach Through Voltage-Controlled DG–Grid Interfacing Converters , 2012, IEEE Transactions on Industrial Electronics.

[14]  T. Funabashi,et al.  A method of three-phase balancing in microgrid by photovoltaic generation systems , 2008, 2008 13th International Power Electronics and Motion Control Conference.

[15]  Poh Chiang Loh,et al.  A grid-interfacing power quality compensator for three-phase three-wire microgrid applications , 2006, IEEE Transactions on Power Electronics.