Estimation of Synchronization Signal Using Sinusoidal Amplitude Integrator in Synchronous Reference Frame

被引：0

作者：

Du, Xiong ^{[1
]}

Liu, Yandong ^{[1
]}

Wang, Guoning ^{[1
]}

Sun, Pengju ^{[1
]}

Zhou, Luowei ^{[1
]}

Tai, Heng-Ming ^{[2
]}

机构：

[1] Chongqing Univ, Sch Elect Engn, Chongqing 400030, Peoples R China

[2] Univ Tulsa, Dept Elect Engn, Tulsa, OK 74104 USA

来源：

2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2014年

基金：

中国国家自然科学基金;

关键词：

GRID SYNCHRONIZATION; POWER CONVERTERS; COMPLEX; PLL; DESIGN;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Synchronization with the grid voltage is critical in the control of grid-connected converters Under unbalanced grid condition, the conventional synchronous reference frame PLL (SRF-PLL) does not work well due to the effect of the fundamental negative sequence component. This paper proposes a new synchronization method, which incorporates a sinusoidal amplitude integrator (SAI) into the conventional SRF-PLL. The proposed SAI-PLL method not only eradicates the effect of the fundamental negative sequence component, but also accurately and quickly estimates the amplitude and phase angle of the fundamental components in unbalanced and distorted conditions. Moreover, the proposed SAI-PLL successfully eliminates the influence of dc offset in the grid voltage. Simulation and experimental results demonstrate that the proposed PLL method can effectively extract the synchronization signal under unbalanced and distorted conditions.

引用

页码：4925 / 4931

页数：7