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The effects of interharmonic distortion on three-phase inverters whose control is based on the use of PLL systems are analyzed. After some brief recalls on the general scheme of a three-phase PLL, a linear analysis in the presence of interharmonics is developed in terms of amplitude and phase modulation effects on the PLL errors. Finally, a sensitivity(More)
The effects of unbalances, harmonics, and interharmonics on PLL systems are analyzed. After a brief review of some typical schemes for three-phase and single-phase PLLs, an analytical assessment of the phase angle and frequency errors for PLLs in the presence of disturbances is performed to obtain simple analytical formulas. Numerous case studies for the(More)
In this paper, a new analytical estimator for light flicker in frequency domain, which is able to take into account also the frequency components neglected by the classical methods proposed in literature, is proposed. The analytical solutions proposed apply for any generic stationary signal affected by interharmonic distortion. The light flicker analytical(More)
In this paper, a converter control strategy able to provide ancillary services implemented for the Italian MV distribution Networks has been presented. A three stage system composed by several boost converters, a VSI Active Front End and a transformer has been considered as interface between distribution grid and DERs. The proposed control strategy operates(More)
The use of the new unbalance definition introduced by some of the authors in a previous paper is considered for the compensation of Light Flicker in networks where there is the presence of large arc furnaces. Some recalls on compensation strategies for arc furnaces are firstly given. Then, the new unbalance definition is briefly recalled in its original(More)
The effects of interharmonic distortion on measurement instruments based on PLL systems are analyzed. After some brief recalls on the general scheme of a three-phase PLL, a linearized analysis in the presence of interharmonics is developed in terms of PLL phase angle and frequency errors. Finally, the results of a numerical case-study on a Power Quality(More)
The effects of interharmonic distortion on Photo Voltaic (PV) inverters whose control is based on the use of PLL systems are analyzed. After some brief recalls on typical PV inverter connection schemes and control strategies, the design of the PLL and its sensitivity to the presence of interharmonic distortion is analyzed. Finally, a case-study on a very(More)
This paper presents some of the results of a three-year research project entitled ATLANTIDE, which is aimed at developing a comprehensive digital archive of reference models of Italian distribution networks, including forecasted load and generation development evolving towards future smart grid scenarios. The paper focuses on the models developed for(More)
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