New Active Damping Strategy for LCL-Filter-Based Grid-Connected Inverters with Harmonics Compensation

Guozhen Hu; Changsong Chen; Duan Shanxu

New Active Damping Strategy for LCL-Filter-Based Grid-Connected Inverters with Harmonics Compensation

Guozhen Hu

Changsong Chen

Duan Shanxu

Vol. 13, No. 2, pp. 287-295, Mar. 2013

10.6113/JPE.2013.13.2.287

Active damping

Grid-connected inverter

Harmonics

LCL

PDF

Abstract

The use of LCL filters in pulse width modulation voltage source converters is a standard solution for providing proper attenuation of high-order grid-current harmonics. However, these filters can cause the undesired effect of resonance. This paper proposes an active damping strategy with harmonics compensation. It can alleviate the harmonics around the resonance frequency caused by the LCL filters. The proposed strategy is attractive since it is simple, does not depend on grid parameters and does not increase the number of sensors. Simulation and experimental results verify the effectiveness of the proposed active damping strategy.

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Cite this article

[IEEE Style]

G. Hu, C. Chen, D. Shanxu, "New Active Damping Strategy for LCL-Filter-Based Grid-Connected Inverters with Harmonics Compensation," Journal of Power Electronics, vol. 13, no. 2, pp. 287-295, 2013. DOI: 10.6113/JPE.2013.13.2.287.

[ACM Style]

Guozhen Hu, Changsong Chen, and Duan Shanxu. 2013. New Active Damping Strategy for LCL-Filter-Based Grid-Connected Inverters with Harmonics Compensation. Journal of Power Electronics, 13, 2, (2013), 287-295. DOI: 10.6113/JPE.2013.13.2.287.