Single-Phase Grid-Connected PV System Based on Multi-Carrier PWM and Power Feed-Forward

Abstract:

Article Preview

In the traditional single-phase grid-connected photovoltaic(PV) system, the output grid-current has the shortcomings of high harmonic distortion rate and slow dynamic response. In order to solve these problems, an improved method on the inverter is proposed. The inverter consists of full-bridge circuit and auxiliary circuit. With the multi-carrier PWM, the inverter produces output voltages in five levels, which can reduce the THD of the grid current. At the same time , this paper presents the power feed-forward algorithm based on traditional control method. The output power of PV array is added to the reference of current close-loop as power feed-forward, which improves the dynamic response to the input power changes. At last, the simulation results show the effectiveness of the proposed method.

Info:

Periodical:

Advanced Materials Research (Volumes 347-353)

Edited by:

Weiguo Pan, Jianxing Ren and Yongguang Li

Pages:

763-769

DOI:

10.4028/www.scientific.net/AMR.347-353.763

Citation:

Q. J. Zhang et al., "Single-Phase Grid-Connected PV System Based on Multi-Carrier PWM and Power Feed-Forward", Advanced Materials Research, Vols. 347-353, pp. 763-769, 2012

Online since:

October 2011

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.