Modeling and Experimental Investigation on Vector Control of Grid-connected Inverter-Based Distributed Generation
DOI:
https://doi.org/10.13052/dgaej2156-3306.3141Keywords:
Current Controller, Delta modulator, Delta-sigma modulator, Distributed Generation (DG), Total Harmonic Distortion (THD), Vector Control, Voltage Source Inverter (VSI),Abstract
As the distributed generation (DG) systems based on small hydro,
wind turbine and solar energy etc., are intermittent power sources, the
grid-connected inverter is employed as an interfacing device to maintain
voltage at the point of common coupling (PCC) and power quality. If
these systems are not well controlled then their connection to the utility
network can lead to grid instability or even failure. In order to solve this
problem, current controller plays an important role on grid-connected
inverter system. In this article vector control of grid connected-inverter
system based on grid-flux oriented reference frame is presented. In addition, a modified delta-sigma modulator in the inner feedback loop is
proposed to maintain voltage quality at the utility end with sinusoidal
current injection. Moreover, the proposed control strategy ensures independent control of active and reactive power flowing into the grid. The
overall performance of proposed control strategy is analyzed in MATLAB-Simulink environment and the obtained results are validated with
experimental results in the laboratory prototype using a TMS320F2812
DSP platform.
Downloads
References
L. Chang and H.M. Kojabadi, “Review of interconnection standards for distributed power generation,” Large Engineering Systems Conference on Power Engineering 2002
(LESCOPE’ 02), pp.36 - 40, June 2002.
F. Iov, M. Ciobotaru and F. Blaabjerg, “Power Electronics Control of Wind Energy in Distributed Power Systems,” 11th International Conference o
trical and Electronic Equipment, pp.1109-1114, May 2008.
F. Blaabjerg, R. Teodorescu, M. Liserre, and A.V. Timbus, “Overview of control and grid
synchronization for distributed power generation systems,” IEEE Transaction on
Industrial Electronics, vol.53, pp. 1398-1409, Oct. 2006.
Rolf Ottersten, “Vector Control of a Double-Sided PWM Converter and Induction Machine Drive,” PHD Thesis, Chalmers University of Technology, Goteborg, Sweden
Azaza, H., and Masmoudi, A., “Implementation of a dual vector control strategy in a
doubly-fed machine drive,” European Transactions on Elect. Power, Vol. 15, No. 6, pp.
–155, November 2005.
Schonardie, Mateus F. Martins, Denizar C., “Three-phase grid-connected photovoltaic
system with active and reactive power control using d-q-0 transformation,” IEEE
th Annual Power Electronics Specialists Conference, pp. 1202-1207, 2008.
Zhou Dejia, Zhao Zhengming, Yuan Liqiang, Feng Bo, Zhao Zhiqiang, “Photovoltaic
grid-connected system based on a synchronous current vector PI controller,” Journal of Tsinghua Univ (Sci &Tech), Vol. 49, No.1, pp. 33-36, 2009.
Zmood, D.N.; Holmes, D.G., “Stationary frame current regulation of PWM inverters with zero steady-state error,” Power Electronics, IEEE Transactions on, vol.18,
no.3,pp.814,822, May 2003
B. Chitti Babu1, Anup Anurag, Tontepu Sowmya, Debati Marandi, and Satarupa Bal, “Decoupled Control Strategy of Grid Interactive Inverter System with Optimal LCL
Filter Design,” International Journal of Emerging Electric Power Systems. Vol.14, Iss. 5, Pp.
–486. Sep 2013.
Ahmed Ibrahim, “vector control of current regulated inverter connected to grid for wind
energy applications.” International Journal on Renewable Energy Technology, vol.1,
no.1, pp.145-151, 2009.
A. Mertens, “Performance analysis of three-phase inverters controlled by synchronous
delta-modulation systems IEEE Transactions on Industry Applications, Vol. 30, Issue
, pp.1016-1027, 1994.
Steven R. Norsworthy, Richard Schreirer and Garbor C. Temes, “Delta Sigma Data Converters-Theory, Design and Simulation,” IEEE press, 1996.
Shaoan Dai, Annette von Jouanne, Alan Wallace, Gabor C. Temes,” Delta-Sigma Modulation Applications in Neutral-Point Clamped Inverters,” Conference Record of the
th IEEE IAS Annual Meeting., Vol.1, pp.678-683, Oct 2003.
A. Hirota, S. Nagai and M. Nakaoka, “A novel delta-sigma modulated-DC power converter utilizing dither signal,” Power Electronics Specialists Conference, 31st Annual IEEE PESC, conference, Vol. 2, pp. 831 -836, 2000.