Special Issue "Emerging Converters, Advanced Control and Technologies Enhancing Electric Energy Conversion in Photovoltaic Systems"

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: 28 February 2021.

Special Issue Editor

Dr. Andrii Chub
Website
Guest Editor
School of Engineering, Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, 19086 Tallinn, Estonia
Interests: dc-dc converters; renewable energy conversion; photovoltaic module level power electronics; residential dc microgrids; impedance-source converters; advanced control of power converters
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Special Issue Information

Dear Colleagues,

Sustainable development is the only way for humanity to survive exhaustion of fossil fuels and overcome environmental challenges piled up during industrial age. Significant cost and efficiency improvements of PV systems made them commercially attractive solution. Therefore, mass deployment of photovoltaic systems is advancing at an accelerating pace. Large photovoltaic plants are considered as the best replacement for central generation facilities burning fossils. Each year new records are achieved in the top of the largest PV power plants. Moreover, building integrated photovoltaic as well as powering IoT devices and micro satellites show trend towards low-power high-performance systems. Hence, the PV technology is advancing fast at all power levels and penetrate increasing number of applications.

Even though the PV industry achieved high maturity level, there are numerous challenges and opportunities open for new solutions. Among them, stability of parallel PV generation units, reliability driven design of converters, shade-tolerant residential power interfaces, and active power control methods are of special interest among others. This special session aims to concentrate the latest developments and allow researchers to share experiences to advance power electronic converters, control methods and design methods for photovoltaic systems.

Topics of the Special Issue include but are not limited to:

  • Transformerless PV inverters with wide input voltage range
  • Active power decoupling in single-phase PV inverters
  • High step-up dc-dc converters
  • Partial power processing converters for distributed PV architectures
  • PV power optimizers and their control
  • PV microinverters with an improved MPPT range
  • Sub-module PV power converter topologies
  • Topologies for increased reliability and warranty extension
  • Efficiency and reliability of PV systems
  • Global MPPT algorithms for PV systems under partial shading conditions
  • Advanced control for PV inverters to provide ancillary grid services
  • Active power control strategies: delta power control, ramp-rate control, etc.
  • Module-level PV system monitoring and diagnosis
  • Stability of parallel power converters in large PV plants
  • Resiliency of islanded PV systems
  • Design and control of battery energy storage system coordinated with PV generators
  • Artificial intelligence methods applied in design and control of PV systems
  • Solutions for repowering and retrofitting aging PV power plants

Dr. Andrii Chub
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • PV systems
  • Power electronics
  • PV inverters
  • PV module level power electronics
  • power control
  • dc-dc converters
  • converter topologies
  • energy efficiency
  • system reliability

Published Papers (2 papers)

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Research

Open AccessFeature PaperArticle
Modified Impedance-Source Inverter with Continuous Input Currents and Fault-Tolerant Operations
Energies 2020, 13(13), 3408; https://doi.org/10.3390/en13133408 - 02 Jul 2020
Abstract
Impedance-source (Z-source) inverters are increasingly adopted in practice, where a high voltage gain is required. However, issues like drawing a non-continuous current from the DC source and ceasing the energy supply under DC source faults are also observed. In this paper, an embedded [...] Read more.
Impedance-source (Z-source) inverters are increasingly adopted in practice, where a high voltage gain is required. However, issues like drawing a non-continuous current from the DC source and ceasing the energy supply under DC source faults are also observed. In this paper, an embedded enhanced-boost Z-source inverter (EEB-ZSI) is thus proposed to tackle the issues. The proposed EEB-ZSI employs two DC sources, which enable the continuous input current and fault-tolerant operations (e.g., open-circuit and short-circuit faults in the DC sources). The operational principles are presented in detail with an in-depth circuit analysis. Moreover, the proposed EEB-ZSI is benchmarked with prior-art Z-source inverters. Experimental tests further demonstrate the effectiveness of EEB-ZSI regarding the continuous input current and flexible fault tolerance. Full article
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Open AccessArticle
On the Equivalence of the Switched Inductor and the Tapped Inductor Converters and its Application to Small Signal Modelling
Energies 2019, 12(24), 4806; https://doi.org/10.3390/en12244806 - 17 Dec 2019
Abstract
Switched inductor (SI) converters are popular in applications requiring a steeper conversion ratio. However, these converters operate a twin inductor switching cell, which complicates the small-signal modeling. This paper proposes an expeditious small-signal analysis method to model the SI converters. The offered modeling [...] Read more.
Switched inductor (SI) converters are popular in applications requiring a steeper conversion ratio. However, these converters operate a twin inductor switching cell, which complicates the small-signal modeling. This paper proposes an expeditious small-signal analysis method to model the SI converters. The offered modeling approach is hinged on the analogy existing between the SI converters and certain Tapped Inductor (TI) converters. It is suggested here that by virtue of the analogy of the SI converters and TI converters the small-signal model of the SI converter is identical to that of its ideal TI counterpart. Hence, the recently developed Tapped Inductor Switcher (TIS) methodology can be applied to the modeling of the SI converters as well. As an example, the small-signal model of the Switched Inductor Buck converter is obtained. Theoretical analysis was confirmed by simulation and experimental results. In addition, several other SI converters and their TI counterparts are identified. Full article
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