Sequences Detection of an Unbalanced Sinusoidal Voltage of Unknown Frequency Using a Reduced-Order Observer
Sequences Detection of an Unbalanced Sinusoidal Voltage of Unknown Frequency Using a Reduced-Order Observer
复制标题
DOI：
10.1109/tpwrd.2013.2253498
复制
发表时间：
2013-04
影响因子：
4.4
通讯作者：
S. G. Jorge;J. Solsona;C. Busada
中科院分区：
文献类型：
--
作者：
S. G. Jorge;J. Solsona;C. Busada
本文提出了一种全局收敛的非线性观测器，能够恢复不平衡电网电压的正、负序列。该算法具有频率自适应能力，因此在稳定状态下，不受电网频率变化的影响。另一个特性是，由于它是一个降阶观测器，因此只需要三种状态来实现它。通过数学分析、仿真和实验结果验证了该方案的有效性。
This paper presents a globally convergent nonlinear observer capable of recovering the positive and negative sequences of an unbalanced grid voltage. The proposed algorithm has frequency adaptation, and is therefore, in steady state, immune to grid frequency variations. Another feature is that since it is a reduced-order observer, only three states are needed to implement it. The validity of the proposed scheme is verified through mathematical analysis, simulation, and experimental results.