Impedance-based harmonics compensation with accurate harmonic power sharing in distorted microgrids

Minh-Duc Pham; Hong-Hee Lee

Impedance-based harmonics compensation with accurate harmonic power sharing in distorted microgrids

Minh-Duc Pham

Hong-Hee Lee

Vol. 21, No. 2, pp. 427-437, Feb. 2021

10.1007/s43236-020-00192-7

Harmonic power sharing

PCC harmonics compensation

Islanded microgrid

PCC voltage distortion

Abstract

This paper presents an enhanced compensation strategy for distributed generation (DG) systems to simultaneously achieve accurate power sharing and harmonics compensation at the point of common coupling (PCC). In the proposed control strategy, the output impedance is modified at the fundamental and harmonic frequencies to compensate for the line impedance mismatches among DG units, which results in accurate power sharing. In addition, load harmonic currents are effectively adjusted by the DG units to effectively compensate the PCC voltage harmonics. Additionally, the DG equivalent impedance is regulated adaptively to ensure accurate harmonic power sharing even in the presence of sudden load changes. Furthermore, a distributed communication network is adopted instead of a central controller to increase the reliability and stability of the microgrid system. The proposed control strategy is applied to a prototype microgrid system, and its effectiveness and reliability are experimentally validated.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

M. Pham and H. Lee, "Impedance-based harmonics compensation with accurate harmonic power sharing in distorted microgrids," Journal of Power Electronics, vol. 21, no. 2, pp. 427-437, 2021. DOI: 10.1007/s43236-020-00192-7.

[ACM Style]

Minh-Duc Pham and Hong-Hee Lee. 2021. Impedance-based harmonics compensation with accurate harmonic power sharing in distorted microgrids. Journal of Power Electronics, 21, 2, (2021), 427-437. DOI: 10.1007/s43236-020-00192-7.