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A Unified Method for Generic Signal Parameter Estimation of Arbitrarily Distorted Single-Phase Grids With DC-Offset
IEEE Open Journal of the Industrial Electronics Society ( IF 5.2 ) Pub Date : 2020-08-18 , DOI: 10.1109/ojies.2020.3017379 Christoph Hackl , Markus Landerer
IEEE Open Journal of the Industrial Electronics Society ( IF 5.2 ) Pub Date : 2020-08-18 , DOI: 10.1109/ojies.2020.3017379 Christoph Hackl , Markus Landerer
A unified method is presented which allows to estimate dc-offset, all harmonic components and fundamental frequency in arbitrarily distorted single-phase grids using a Frequency Adaptive Observer (FAO) consisting of modified Second-Order Generalized Integrators (mSOGIs)
, an adaptive DC-Integrator (DCI) and a modified Frequency Locked Loop (mFLL)
. DCI and mSOGIs are tuned by pole placement which allows for an arbitrarily fast detection of dc-offset and harmonic components if the fundamental frequency is known. If the fundamental frequency must be estimated as well, an mFLL with Gain Normalization (GN)
, Rate Limitation (RL)
, Anti-Windup (AW) strategy and low-pass filters (LPF) must be employed. The effectiveness of the proposed FAO is validated by experimental results and its enhanced performance is shown and compared to existing estimation methods.
中文翻译:
直流偏移的任意畸变单相电网通用信号参数估计的统一方法
提出了一种统一的方法,该方法可以估算直流偏移,所有谐波分量和 任意畸变的单相电网的基本频率使用 频率自适应观测器(FAO) 包含由...组成 修改后的二阶广义积分器(mSOGI)
,自适应 直流积分器(DCI) 和一个 修改后的锁频环(mFLL)
。DCI和mSOGI的调整方式为杆位 如果已知基频,则可以任意快速检测直流偏移和谐波分量。如果还必须估算基频,则具有增益归一化(GN)
, 速率限制(RL)
, 防风(AW) 策略与 低通滤波器(LPF) 必须雇用。实验结果证实了拟议的粮农组织的有效性,并显示了其改进的绩效,并与现有的估算方法进行了比较。
更新日期:2020-09-08
中文翻译:
直流偏移的任意畸变单相电网通用信号参数估计的统一方法
提出了一种统一的方法,该方法可以估算直流偏移,所有谐波分量