In three-phase distribution networks non-linear loadscan give rise to DC current components. A DC currentcomponent is particularly detrimental for the distribution powertransformers, because it can lead to asymmetric magnetic coresaturation. Apart from an increased THD in line currents,transformers operating under saturation conditions presentincreased VAR absorption, and, accordingly, possible damageconsequent to the overheating. This paper proposes anelectronic system able to compensate the undesired DC currentcomponents flowing in a three-phase distribution grid. Thissystem comprehends a precise magnetic sensor and a powerconverter stage (different for low or medium-high voltage grids).The magnetic sensor detects the effects of the DC currentcomponents that flow in the power conductors, whereas thepower converter compensates them. Simulation andexperimental results show the effectiveness of the proposedsystem.
In three-phase distribution networks non-linear loads can give rise to DC current components. A DC current component is particularly detrimental for the distribution power transformers, because it can lead to asymmetric magnetic core saturation. Apart from an increased THD in line currents, transformers operating under saturation conditions present increased VAR absorption, and, accordingly, possible damage consequent to the overheating. This paper proposes an electronic system able to compensate the undesired DC current components flowing in a three-phase distribution grid. This system comprehends a precise magnetic sensor and a power converter stage (different for low or medium-high voltage grids). The magnetic sensor detects the effects of the DC current components that flow in the power conductors, whereas the power converter compensates them. Simulation and experimental results show the effectiveness of the proposed system. © 2012 IEEE.
Active Filter for DC Current Components in Three-Phase Distribution Grids / Barater, D.; Buticchi, G.; Franceschini, G.; Lorenzani, E.. - ELETTRONICO. - (2012), pp. 2240-2245. (Intervento presentato al convegno 27th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2012 tenutosi a Orlando, FL, usa nel 5-9 February 2012) [10.1109/APEC.2012.6166134].
Active Filter for DC Current Components in Three-Phase Distribution Grids
D. Barater;G. Franceschini;E. Lorenzani
2012
Abstract
In three-phase distribution networks non-linear loads can give rise to DC current components. A DC current component is particularly detrimental for the distribution power transformers, because it can lead to asymmetric magnetic core saturation. Apart from an increased THD in line currents, transformers operating under saturation conditions present increased VAR absorption, and, accordingly, possible damage consequent to the overheating. This paper proposes an electronic system able to compensate the undesired DC current components flowing in a three-phase distribution grid. This system comprehends a precise magnetic sensor and a power converter stage (different for low or medium-high voltage grids). The magnetic sensor detects the effects of the DC current components that flow in the power conductors, whereas the power converter compensates them. Simulation and experimental results show the effectiveness of the proposed system. © 2012 IEEE.
Pubblicazioni consigliate
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris
