Novel Control Strategy for a UPQC under Distorted Source and Nonlinear Load Conditions

Quoc-Nam Trinh; Hong-Hee Lee

Novel Control Strategy for a UPQC under Distorted Source and Nonlinear Load Conditions

Quoc-Nam Trinh

Hong-Hee Lee

Vol. 13, No. 1, pp. 161-169, Jan. 2013

10.6113/JPE.2013.13.1.161

Active Power Filter (APF)

Harmonic compensation

Resonant controller

Unified power quality conditioner (UPQC)

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Abstract

This paper proposes a novel control strategy for a unified power quality conditioner (UPQC) including a series and a shunt active power filter (APF) to compensate the harmonics in both the distorted supply voltage and the nonlinear load current. In the series APF control scheme, a proportional-integral (PI) controller and a resonant controller tuned at six multiples of the fundamental frequency of the network ( 6 S w ) are performed to compensate the harmonics in the distorted source. Meanwhile, a PI controller and three resonant controllers tuned at 6nws (n=1, 2, 3) are designed in the shunt APF control scheme to mitigate the harmonic currents produced by nonlinear loads. The performance of the proposed UPQC is significantly improved when compared to that of the conventional control strategy thanks to the effective design of the resonant controllers. The feasibility of the proposed UPQC control scheme is validated through simulation and experimental results.

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Cite this article

[IEEE Style]

Q. Trinh and H. Lee, "Novel Control Strategy for a UPQC under Distorted Source and Nonlinear Load Conditions," Journal of Power Electronics, vol. 13, no. 1, pp. 161-169, 2013. DOI: 10.6113/JPE.2013.13.1.161.

[ACM Style]

Quoc-Nam Trinh and Hong-Hee Lee. 2013. Novel Control Strategy for a UPQC under Distorted Source and Nonlinear Load Conditions. Journal of Power Electronics, 13, 1, (2013), 161-169. DOI: 10.6113/JPE.2013.13.1.161.