Three-Phase Photovoltaic Systems: Structures, Topologies, and Control

Abstract

A still booming installation of solar photovoltaic (PV) systems has been witnessed worldwide. It is mainly driven by the demand of "clean" power generation. Grid-connected PV systems will become an even active player in the future mixed power systems, which are linked by a vast of power electronics converters. In order to achieve a reliable and efficient power generation from PV systems, stringent demands have been imposed on the entire PV system. It in return advances the development of power converter technology in PV systems. This paper thus takes an overview of the advancement of power electronics converters in single-phase PV systems, being commonly used in residential applications. Demands to single-phase grid-connected PV systems as well as the general system control strategies are also addressed in this paper.

Design for Reliability of Power Electronics for Grid-Connected Photovoltaic Systems

“…In fact, the PV utilization is still at a residential level but tends to be large-scale with increased power ratings. Hence, string and multi-string inverters are dominate on market, and the single-phase connection is more often to see [7], [77]. Fig.…”

“…Although there are several state-ofthe-art wind turbine technologies (e.g., the Doubly-Fed Induction Generator -DFIG wind power systems), power electronics converters are normally heavily involved [2], [4], [5]. A thriving penetration of power electronics has also been acknowledged in PV applications, either in small-scale stand-alone units or in large-scale on-grid systems [6], [7]. In a word, power electronics is essential in the power conditioning of renewable energies, and it is also developing with new and emerging power devices coming out on market [8]- [10].…”