NDLI: Investigation of single-stage transformerless buck

Content Provider	IET Digital Library
Author	Mathew, Derick Naidu, Rani Chinnappa
Abstract	The conventional microinverters with transformers and multiple-stage system increases the cost, weight and size, lowering the effectiveness and power density of PV system. It is therefore desirable to prevent using these methods for a microinverter. However, extra care must be taken to prevent component stress, excess switching and conduction losses, ground leakage currents and harmonics. Several transformerless buck–boost inverters have lately been suggested to address various issues. Due to the availability of a number of buck–boost inverter-topology for the solar PV system, it is often difficult to identify when to choose the appropriate topology. Therefore, in order to present a clear view of the advancement of transformerless buck–boost inverters for next-generation grid-integrated PV systems, this article seeks to explore multiple buck–boost topologies with an extensive analytical comparison. Computer simulations for the 70 W system have been conducted in PLECS software to strengthen the results and comparisons, as well as to provide more insight into the features of the distinct topologies for the building-integrated photovoltaic implementation. At the later part, voltage and current stress in each component, efficiency and total harmonic distortion of the system are provided with a general summary, as well as, a technology roadmap.
Starting Page	1487
Ending Page	1499
Page Count	13
ISSN	17554535
Volume Number	13
e-ISSN	17554543
Issue Number	Issue 8, Jun (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/13/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2019.1237
Journal	IET Power Electronics
Publisher Date	2020-02-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Building-integrated Photovoltaic Implementation Current Stress Dielectric Material And Property Distinct Topology Embedded Voltage Buck–boost Ground Leakage Current Harmonic Distortion Invertors Leakage Current Maximum Power Point Trackers Multiple Buck–boost Topologies Multistage MicroInverter Next-generation Grid-integrated PV System Photovoltaic Power System PLECS Software Power 70.0 W Power Density Power Grid Single-stage Transformerless Buck–boost Microinverters Solar Power Stations Technology Roadmap Total Harmonic Distortion Transformerless Buck–boost Inverters Voltage Stress
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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