Advanced Repetitive Controller to Improve the Voltage Characteristics of Distributed Generation with Nonlinear Loads

Quoc-Nam Trinh; Hong-Hee Lee

Advanced Repetitive Controller to Improve the Voltage Characteristics of Distributed Generation with Nonlinear Loads

Quoc-Nam Trinh

Hong-Hee Lee

Vol. 13, No. 3, pp. 409-418, May 2013

10.6113/JPE.2013.13.3.409

Distributed generation

Harmonic compensation

Nonlinear load

Repetitive controller

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Abstract

This paper presents an enhanced control strategy which consists of a proportional-integral controller and a repetitive controller (RC) for improving the voltage performance of distributed generation (DG) under nonlinear load conditions. The proposed voltage controller is able to maintain a sinusoidal voltage at the point of common coupling (PCC) of the DG regardless of the harmonic voltage drop in the system impedance due to nonlinear load currents. In addition, by employing the delay time of the RC at one-sixth of the fundamental period, the proposed RC can overcome the slow response drawback of the traditional PI-RC. The proposed control strategy is analyzed and the design of the RC is presented in detail. The feasibility of the proposed control strategy is verified through simulation and experimental results.

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Cite this article

[IEEE Style]

Q. Trinh and H. Lee, "Advanced Repetitive Controller to Improve the Voltage Characteristics of Distributed Generation with Nonlinear Loads," Journal of Power Electronics, vol. 13, no. 3, pp. 409-418, 2013. DOI: 10.6113/JPE.2013.13.3.409.

[ACM Style]

Quoc-Nam Trinh and Hong-Hee Lee. 2013. Advanced Repetitive Controller to Improve the Voltage Characteristics of Distributed Generation with Nonlinear Loads. Journal of Power Electronics, 13, 3, (2013), 409-418. DOI: 10.6113/JPE.2013.13.3.409.