AC voltage sensorless control method for grid-connected converter with parameter adaptive characteristics

被引：0

作者：

Meng Y. ^{[1
,2
]}

Hu S. ^{[1
]}

Xu H. ^{[1
]}

机构：

[1] Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing

[2] School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2019年 / 39卷 / 07期

关键词：

AC voltage observer; AC voltage sensorless; Grid-connected converter; Parameters adaptive characteristics;

D O I：

10.16081/j.issn.1006-6047.2019.07.001

中图分类号：

学科分类号：

摘要：

To address the applicability of voltage observers in the current AC voltage sensorless control technology, an AC voltage sensorless control method based on parameter adaptive voltage observer is developed. The principle of voltage observer based on the SOGI(Second-Order Generalized Integrator) is described. A frequency adaptive control method for voltage observer is proposed, which takes advantage of real-time phase-locked loop feeding back grid frequency signal. On this basis, the vector relationship is analyzed using simplified model, in the case that the inductance parameters deviate from their actual values. Moreover, an improved voltage observer with adaptive characteristics of inductance parameters is proposed. By applying the improved control approach, AC voltage sensorless control of grid-connected converter with adaptive characteristics of frequency and inductance parameters can be rea-lized, which improves the grid adaptability of the grid-connected converter. © 2019, Electric Power Automation Equipment Press. All right reserved.

引用

页码：1 / 6and36

页数：635

共 18 条

[1]

Wang W., Li Q., Wang R., Study on voltage and flicker of wind turbines, Renewable Energy Resources, 32, 2, pp. 173-178, (2014)

[2]

Hu S., Meng Y., Gong W., Et al., Operation control strategy of DFIG wind turbine under non-ideal grid conditions, Transactions of China Electrotechnical Society, 28, 5, pp. 99-104, (2013)

[3]

Managing harmonics-a guide to ENA engineering re-commendation: G5/4-1, (2005)

[4]

Meng Y., Hu S., Xu H., Research on harmonics restraint technology of direct-driven wind power system, Acta Energiae Solaris Sinica, 35, 12, pp. 2356-2361, (2014)

[5]

Zhang S., Zhu L., Du L., Et al., Wind farm synchronization modes effect on regional power voltage, Central China Electric Power, 25, 2, pp. 65-70, (2012)

[6]

Deng Z., Yu F., Regulation of voltage-source PWM converters without line voltage sensors under unbalanced input voltage condition, Journal of Mechanical & Electrical Engineering, 28, 8, pp. 1000-1005, (2011)

[7]

Abiri E., Rahmati A., Abrishamifar A., A sensorless and sim-ple controller for VSC based HVDC system, Journal of Zhejiang University Science A, 10, 12, pp. 1824-1834, (2009)

[8]

Lu G., Li C., Improved of starting performance for AC voltage sensorless PWM rectifier, Power Electronics, 42, 9, pp. 70-72, (2008)

[9]

Wu F., Sun X., Sun L., Et al., Control strategy of grid-connected converter without AC voltage sensor and its improvement, Electric Power Automation Equipment, 29, 7, pp. 33-37, (2009)

[10]

Wang G., Wang Z., Zhang H., Et al., DPC-based control strategy of VSC-HVDC converter for offshore wind farm, Electric Power Automation Equipment, 31, 7, pp. 115-119, (2011)

← 1 2 →