NDLI: Optimization of SiC-Based H5 and Conergy-NPC Transformerless PV Inverters

Content Provider	IEEE Xplore Digital Library
Author	Saridakis, S. Koutroulis, E. Blaabjerg, F.
Copyright Year	2013
Abstract	The transformerless dc/ac inverters are critical components in the rapidly growing market of grid-connected photovoltaic (PV) applications. They are synthesized by combining available solutions in terms of the power-section topology, power-semiconductors manufacturing technology, and structure of the output filter. In addition, the silicon carbide (SiC)-based power semiconductors are capable to operate reliably at high operating temperature and switching frequency levels combined with a very high efficiency. In this paper, a new design technique is presented for optimizing the switching frequency and structure of the output filter (either LCL- or LLCL-type) in transformerless H5 and conergy-neutral point clamped (Conergy-NPC) PV inverters, which employ SiC-type power devices. The design results demonstrate that the optimized SiC-based H5 and Conergy-NPC transformerless PV inverters are more effective in terms of energy production than their nonoptimized and silicon (Si)-based counterparts. In addition, by reducing the market price of SiC-type power semiconductors to the level of Si-based power devices, enables the development of optimized SiC-based PV inverters with a lower cost of energy than the corresponding PV inverters based on Si technology, thus maximizing the economic profitability of the PV system.
Starting Page	555
Ending Page	567
Page Count	13
File Size	1806995
File Format	PDF
ISSN	21686777
Volume Number	3
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inverters Silicon carbide Inductors Switching frequency Switches Optimization Schottky diodes transformerless DC/AC inverter design genetic algorithms (GAs) optimization photovoltaic (PV) silicon carbide (SiC)
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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