The recent development in power generation by utilizing solar energy as one of the main renewable resources results in thriving investments in this area which creates a competitive industrial market for manufacturers of photovoltaic (PV) systems. Accordingly, in order to succeed in attracting customers, a company needs to improve its position in market not only by focusing on enhancing the products reliability and efficiency, but also by considering the condition of market and customer desires. In this regard, the purpose of this research is to utilize Product Service System (PSS) methods to organize a systematic approach toward improving the reliability of PV inverters as the core element of solar energy generation systems. Furthermore, by following the organized plan, "Reducing the PV plant downtime" is defined as the customer need and various services are suggested with the aim of fulfilling this demand namely as : "Failure Detection Improvement", "Maintenance Prediction", "Remaining Useful Life Calculation", "PSS Marketing" and "Right Spare Parts preparation". Moreover, the mentioned PSS approach creates a strategy which helps to use the available resources beside proposing the new mechanisms and implements to be developed. Thereby, employing "Virtual Sensor" is suggested and realized through this thesis as one of the required designs which results in achieving the defined services. Eventually, the presented methods and techniques are applied to a real PV inverter as the case study of this research.
Il recente sviluppo nella produzione di energia elettrica da fonte solare ha comportato investimenti rilevanti in questo ambito ed ha visto consolidarsi un settore industriale competitivo per i produttori di componenti. Il successo commerciale richiede uno sforzo costante di sviluppo dei prodotti, delle loro performance e della loro affidabilità ma anche una attenzione continua alle esigenze del cliente, in particolare riferimento ai servizi di valore aggiunto. A questo proposito, la presente ricerca prende spunto dalle metodologie Product Service System (PSS) perseguendo nello specifico l’ottimizzazione di alcuni aspetti relativi alla manutenzione degli inverter fotovoltaici. Definita la primaria necessità del cliente come "Ridurre i tempi di fuori servizio dell'impianto fotovoltaico", i termini di servizio sono elaborati seguendo i seguenti punti chiave: "Miglioramento della rilevazione dei guasti", "Manutenzione predittiva", "Calcolo della vita utile residua", "Marketing dei Servizi PSS" e "Ottimizzazione del set di ricambi". Attraverso l’approccio PSS è possibile definire strategie di utilizzo ottimo delle risorse disponibili nello sviluppo di nuove funzionalità e di nuovi strumenti. Uno degli elementi di progettazione che emerge dallo studio come essenziale per il conseguimento dei servizi sopra citati è relativo ai "Sensori Virtuali". I metodi e le tecniche presentate vengono applicati ad un inverter fotovoltaico reale come caso di studio di questa ricerca.
A new PSS approach to improve reliability of PV inverters : implementing virtual sensor paradigm
MEHRAFSHAN, AMIRABBAS
2018/2019
Abstract
The recent development in power generation by utilizing solar energy as one of the main renewable resources results in thriving investments in this area which creates a competitive industrial market for manufacturers of photovoltaic (PV) systems. Accordingly, in order to succeed in attracting customers, a company needs to improve its position in market not only by focusing on enhancing the products reliability and efficiency, but also by considering the condition of market and customer desires. In this regard, the purpose of this research is to utilize Product Service System (PSS) methods to organize a systematic approach toward improving the reliability of PV inverters as the core element of solar energy generation systems. Furthermore, by following the organized plan, "Reducing the PV plant downtime" is defined as the customer need and various services are suggested with the aim of fulfilling this demand namely as : "Failure Detection Improvement", "Maintenance Prediction", "Remaining Useful Life Calculation", "PSS Marketing" and "Right Spare Parts preparation". Moreover, the mentioned PSS approach creates a strategy which helps to use the available resources beside proposing the new mechanisms and implements to be developed. Thereby, employing "Virtual Sensor" is suggested and realized through this thesis as one of the required designs which results in achieving the defined services. Eventually, the presented methods and techniques are applied to a real PV inverter as the case study of this research.| File | Dimensione | Formato | |
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https://hdl.handle.net/10589/152835