Simple Improved Control of Phase Error Compensation for Low Power Operation of PV Grid-Connected Inverter with LCL Filter

Simple Improved Control of Phase Error Compensation for Low Power Operation of PV Grid-Connected Inverter with LCL Filter

Baochao C. Wang Manuela Sechilariu Fabrice Locment 

AVENUES-GSU, Université de Technologie de Compiègne Rue du Docteur Schweitzer, 60200 Compiègne, France

Corresponding Author Email: 
fabrice.locment@utc.fr
Page: 
27-45
|
DOI: 
https://doi.org/10.3166/EJEE.17.27-45
Received: 
12 September 2012
| |
Accepted: 
6 September 2013
| | Citation

OPEN ACCESS

Abstract: 

Obvious grid power factor degradation can often be observed when using LCL filter for grid-connected photovoltaic systems. This paper analyzes degradation causes and a phase error compensation structure is proposed. Experimental results conclude that the proposed compensation structure improves the grid power quality in case of low PV production, in both power factor and harmonics.

Keywords: 

PV grid-connected inverter, LCL filter, control, phase error compensation

1. Introduction
2. System Description
3. Current Feedback Selection and Grid Voltage Influence
4. Phase Error Compensation
5. Improvements for Simplified Phase Error Compensation
6. Experimental Results
7. Conclusions
  References

Abeyasekera T., Johnson C.M., Atkinson D.J. and Armstrong M. (2005). Suppression of line voltage related distortion in current controlled grid connected inverters. Power Electronics, IEEE Transactions on, vol. 20, n° 6, p. 1393-1401.

Agorreta J.L., Borrega M., Lopez J. and Marroyo L. (2011). Modeling and Control of NParalleled Grid-Connected Inverters With LCL Filter Coupled Due to Grid Impedance in PV Plants. Power Electronics, IEEE Transactions on, vol. 26, n° 3, p. 770-785.

Dannehl J., Liserre M. and Fuchs F.W. (2011). Filter-Based Active Damping of Voltage Source Converters With LCL Filter. Industrial Electronics, IEEE Transactions on, vol. 58, n° 8, p. 3623-3633.

Dannehl J., Fuchs F.W., Hansen S. and Thogersen P.B. (2010). Investigation of Active Damping Approaches for PI-Based Current Control of Grid-Connected Pulse Width Modulation Converters With LCL Filters. Industry Applications, IEEE Transactions on, vol. 46, n° 4, p. 1509-1517.

Dannehl J., Fuchs F.W. and Thogersen P.B. (2010). PI State Space Current Control of Grid-Connected PWM Converters With LCL Filters. Power Electronics, IEEE Transactions on, vol. 25, n° 9, p. 2320-2330.

Dannehl J., Wessels C. and Fuchs F.W. (2009). Limitations of Voltage-Oriented PI Current Control of Grid-Connected PWM Rectifiers With LCL Filters. Industrial Electronics, IEEE Transactions on, vol. 56, n° 2, p. 380-388.

Fei L., Yan Z., Shanxu D., Jinjun Y., Bangyin L. and Fangrui L. (2009). Parameter Design of a Two-Current-Loop Controller Used in a Grid-Connected Inverter System With LCL Filter. Industrial Electronics, IEEE Transactions on, vol. 56, n° 11, p. 4483-4491.

Figueres E., Garcera G., Sandia J., Gonzalez-Espin F. and Rubio J.C. (2009). Sensitivity Study of the Dynamics of Three-Phase Photovoltaic Inverters With an LCL Grid Filter. Industrial Electronics, IEEE Transactions on, vol. 56, n° 3, p. 706-717.

Gabe I.J., Montagner V.F. and Pinheiro H. (2009). Design and Implementation of a Robust Current Controller for VSI Connected to the Grid Through an LCL Filter. Power Electronics, IEEE Transactions on, vol. 24, n° 6, p. 1444-1452.

Guoqiao S., Xuancai Z., Jun Z. and Dehong X. (2010). A New Feedback Method for PR Current Control of LCL-Filter-Based Grid-Connected Inverter. Industrial Electronics, IEEE Transactions on, vol. 57, n° 6, p. 2033-2041.

Harnefors L., Zhang L. and Bongiorno M. (2008). Frequency-domain passivity-based current controller design. Power Electronics, IET, vol. 1, n° 4, p. 455-465.

Hea-Gwang J., Kyo-Beum L., Sewan C. and Woojin C. (2010). Performance Improvement of LCL-Filter-Based Grid-Connected Inverters Using PQR Power Transformation. Power Electronics, IEEE Transactions on, vol. 25, n° 5, p. 1320-1330.

Houssamo I., Locment F. and Sechilariu M. (2010). Maximum power tracking for photovoltaic power system: Development and experimental comparison of two algorithms. Renewable Energy, vol. 35, n° 10, p. 2381-2387.

Jalili K. and Bernet S. (2009). Design of LCL Filters of Active-Front-End Two-Level Voltage-Source Converters. Industrial Electronics, IEEE Transactions on, vol. 56, n° 5, p. 1674-1689.

Mariethoz S. and Morari M. (2009). Explicit Model-Predictive Control of a PWM Inverter With an LCL Filter. Industrial Electronics, IEEE Transactions on, vol. 56, n° 2, p. 389-399.

Mohamed Y.A.R.I. (2011). Mitigation of Dynamic, Unbalanced, and Harmonic Voltage Disturbances Using Grid-Connected Inverters With LCL Filter. Industrial Electronics, IEEE Transactions on, vol. 58, n° 9, p. 3914-3924.

Santos Filho R.M., Seixas P.F., Cortizo P.C., Torres L.A.B. and Souza A.F. (2008). Comparison of Three Single-Phase PLL Algorithms for UPS Applications. Industrial Electronics, IEEE Transactions on, vol. 55, n° 8, p. 2923-2932.

Sung Yeul P., Chien Liang C., Jih Sheng L. and Seung Ryul M. (2008). Admittance Compensation in Current Loop Control for a Grid-Tie LCL Fuel Cell Inverter. Power Electronics, IEEE Transactions on, vol. 23, n° 4, p. 1716-1723.

Xuehua W., Xinbo R., Shangwei L. and Tse C.K. (2010). Full Feedforward of Grid Voltage for Grid-Connected Inverter With LCL Filter to Suppress Current Distortion Due to Grid Voltage Harmonics. Power Electronics, IEEE Transactions on, vol. 25, n° 12, p. 3119-3127.