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Droop Control to Compensate Load Voltage Unbalance for Inverter-based Distributed Generations with Unequal Impedance Lines
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 Title & Authors
Droop Control to Compensate Load Voltage Unbalance for Inverter-based Distributed Generations with Unequal Impedance Lines
Yang, Won-Mo; Kim, Hyun-Jun; Han, Byung-Moon;
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 Abstract
This paper proposes a droop control scheme to compensate the unbalanced line-to-line voltage of unbalanced 3-phase load which is coupled with two inverter-based distributed generations through unequal impedance lines. Unbalanced line-to-line load voltages occur due to using single-phase loads, which brings about bad effects on the coupled inverters and the distributed generations. In order to compensate the unbalanced line-to-line voltages, a positive sequence voltage control was used for sharing the active and reactive power and a negative sequence control was used for reducing the negative sequence voltage. The feasibility of the proposed scheme was first verified by computer simulations, and then experiments with a hardware set-up built in the lab. The experimental results were compared with the simulation results to confirm the feasibility of the proposed scheme.
 Keywords
Parallel inverter operation;Droop control;Line impedance;Voltage unbalance compensation;
 Language
Korean
 Cited by
 References
1.
H. Nikkhajoei and R.H. Lasseter, "Distributed generation interface to the CERTS microgrid," IEEE Trans. Power Del., vol. 24, no. 3, pp. 1598-1608, Jul. 2009. crossref(new window)

2.
A. V. Jouanne and B. Banerjee, "Assessment of voltage unbalance," IEEE Trans. Power Del., vol. 16, no. 4, pp. 782-790, Oct. 2001.

3.
Y. Xu, L.M. Tolbert, J. D. Kueck, and D.T. Rizy, "Voltage and current unbalance compensation using a static var compensator," IET on Power Electron., vol. 3, no. 6, pp. 977-988, Nov. 2010. crossref(new window)

4.
P. S. Flannery, G. Venkataramanan, "Unbalanced voltage sag ride-through of a doubly fed induction generator wind turbine with series grid-side converter," IEEE Trans. on Ind. Appl., vol. 45, no. 5, pp. 1879-1887, Sep.-Oct. 2009. crossref(new window)

5.
Y. Xu; L. M. Tolbert, and J. D. Kueck, "Voltage and current unbalance compensation using a parallel active filter," IEEE Power Electron. Spec. Conf., pp. 2919-2925, June 2007.

6.
F. Barrero, S. Martinez, F. Yeves, F. Mur, and P. Martinez, "Universal and reconfigurable to UPS active power filter for line conditioning," IEEE Trans. Power Del., vol. 18, no. 1, pp. 283-290, Jan. 2003. crossref(new window)

7.
D. Graovac, V. A. Katic, and A. Rufer, "Power quality problems compensation with universal power quality conditioning system," IEEE Trans. Power Del., vol. 22, no. 2, pp. 968-976, Apr. 2007. crossref(new window)

8.
Y. Li, D. M. Vilathgamuwa, and P. C. Loh, "Microgrid power quality enhancement using a three-phase four-wire grid-interfacing compensator," IEEE Trans. Ind. Appl., vol. 41, no. 6, pp. 1707-1719, Nov./Dec. 2005. crossref(new window)

9.
Y. Li, D. M. Vilathgamuwa, and P. C. Loh, "A grid-interfacing power quality compensator for three-phase three-wire microgrid applications," IEEE Trans. Power Electron., vol. 21, no. 4, pp. 1021-1031, Jul. 2006. crossref(new window)

10.
M. Savaghebi, J. M. Guerrero, A. Jalilian, and J. C. Vasquez, "Experimental evaluation of voltage unbalance compensation in an islanded microgrid," in Proc. 20th IEEE Int. Symp. Ind. Electron. (ISIE 2011), pp. 1453-1458.

11.
M. Savaghebi, A. Jalilian, J. C. Vasquez, J. M. Guerrero, and R. Teodorescu, "Distributed generator with voltage unbalance compensation capability," in Proc. 25th Int. Power Syst. Conf. (PSC 2010), pp. 1-10 [Online]. Available: www.psc-ir.com/ed10/10-EPQA-1943.pdf

12.
P. T. Cheng, C. Chen, T. L. Lee, and S. Y. Kuo, "A cooperative imbalance compensation method for distributed-generation interface converters," IEEE Trans. Ind. Appl., vol. 45, no. 2, pp. 805-815, Mar./Apr. 2009. crossref(new window)

13.
M. Savaghebi, A. Jalilian, J. C. Vasquez and J. M. Guerrero, "Autonomous Voltage Unbalance Compensation in an Islanded Droop-Controlled Microgrid," in IEEE Transactions on Industrial Electronics, vol. 60, no. 4, pp. 1390-1402, April 2013

14.
X. Zhao, X. Wu, L. Meng, J. M. Guerrero and J. C. Vasquez, "A direct voltage unbalance compensation strategy for islanded microgrids," Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE, Charlotte, NC, 2015, pp. 3252-3259.

15.
M. Savaghebi, A. Jalilian, J. C. Vasquez and J. M. Guerrero, "Secondary Control Scheme for Voltage Unbalance Compensation in an Islanded Droop-Controlled Microgrid," in IEEE Transactions on Smart Grid, vol. 3, no. 2, pp. 797-807, June 2012.

16.
J. M. Guerrero, L. G. de Vicuna, J. Matas, M. Castilla, and J. Miret, "A wireless controller to enhance dynamic performance of parallel inverters in distributed generation systems," IEEE Trans. Power Electron., Vol. 19, No. 5, pp. 1205-1213, Sep. 2004. crossref(new window)

17.
K. S. Parlak, M. Ozdemir, and M. T. Aydemir, "Active and reactive power sharing and frequency restoration in a distributed power system consisting of two UPS units," Electrical Power and Energy System, Vol. 31, No. 5, pp. 220-226, Jun. 2009. crossref(new window)

18.
P. Rodriguez, J. Pou, J. Bergas, J. I. Candela, R. P. Burgos and D. Boroyevich "Decoupled double synchronous reference frame PLL for power converters control", IEEE Trans. on Power Electronics, vol. 22, no. 2, pp.584-592 2007.

19.
M. J. Ryan, W. E. Brumsickle, and R. D. Lorenz, "Control topology options for single-phase UPS inverters," IEEE Trans. Ind. Appl., Vol. 33, No. 2, pp. 493-501, 1997. crossref(new window)

20.
J. M. Guerrero, L. Garci,a de Vicun,a, J. Miret, J. Matas, and M. Castilla, "Integral control technique for single-phase UPS inverter," Proc. IEEE ISIE, 02, pp. 1043-1048, 2002.

21.
J. M. Guerrero, L. Garci,a de Vicun,a, J. Miret, J. Matas, and M. Castilla, "A nonlinear feed-forward control technique for single-phase UPS inverters," Proc. IEEE IECON, 02, pp. 257-261, 2002.

22.
Hyun-Jun Kim, Yoon-Seok Lee, Jae-Hyuk Kim, and Byung-Moon Han. "Coordinated droop control for standalone dc micro-grid," JEET, Vol 9, No. 3, pp. 1072-1079, 2014.

23.
R. C. Dugan, M. F. McGranaghan, S. Santoso, and H.W. Beaty, Electrical Power Systems Quality, 2nd ed. New York: McGraw-Hill, 2003.