In this paper, an effective circuit for both voltage and current zeroing of single solar panels embedded in a solar field is presented. The circuit interrupts the panel current by means of a solid-state power switch and zeros the panel voltage by means of an electromechanical relay. Each solar panel can be either connected or disconnected from the string independently from each other. The circuit is connected to the existing junction box and does not require additional wiring, neither for its power supply, which is always derived from the solar panel, nor for its data transmission, which is achieved through a special suited power line communication scheme exploiting the existing dc power bus. Experiments performed on a test solar field equipped with in-housemade circuit prototypes evidence the reliability of the proposed approach

Single-panel voltage zeroing system for safe access on PV plants

DI NAPOLI, FABIO;GUERRIERO, PIERLUIGI;d'ALESSANDRO, VINCENZO;DALIENTO, SANTOLO
2015

Abstract

In this paper, an effective circuit for both voltage and current zeroing of single solar panels embedded in a solar field is presented. The circuit interrupts the panel current by means of a solid-state power switch and zeros the panel voltage by means of an electromechanical relay. Each solar panel can be either connected or disconnected from the string independently from each other. The circuit is connected to the existing junction box and does not require additional wiring, neither for its power supply, which is always derived from the solar panel, nor for its data transmission, which is achieved through a special suited power line communication scheme exploiting the existing dc power bus. Experiments performed on a test solar field equipped with in-housemade circuit prototypes evidence the reliability of the proposed approach
File in questo prodotto:
File Dimensione Formato  
J037_DiNapoli15_JPV.pdf

solo utenti autorizzati

Tipologia: Altro materiale allegato
Licenza: Accesso privato/ristretto
Dimensione 1.01 MB
Formato Adobe PDF
1.01 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11588/610686
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 11
social impact