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Electronics
Special Issues
Development of Power Electronics and Smart-Grids
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Development of Power Electronics and Smart-Grids

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Power Electronics".

Deadline for manuscript submissions: 15 June 2024 | Viewed by 2491

Special Issue Editors

Dr. Ziwen Liu

E-Mail Website
Guest Editor
College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China
Interests: MMC-HVDC system; active support technology of renewable energy integrated power system; the micro-grid control
Dr. Jinmu Lai

E-Mail Website
Guest Editor
School of Electric and Information Engineering, Zhengzhou University, Zhengzhou 450001, China
Interests: electric energy router; power quality control; the application of power electronics in power systems
Special Issues, Collections and Topics in MDPI journals
Dr. Ji Han

E-Mail Website
Guest Editor
School of New Energy, Harbin Institute of Technology at Weihai, Weihai 264200, China
Interests: wind power; micro-grid control; artificial intelligence
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The rapidly increased integration of renewable energy into the modern power grid is of great significance in the sustainable development and utilization of energy. Power electronics play a significant role in the integration of renewable energy to power grid, realizing efficient electrical energy generation, conversion, flexible regulation, and utilization. However, the inherent characteristics of low inertia and rapidity of power electronic devices gradually change the system response behavior of the traditional power grid dominated by synchronous machines. Therefore, starting from the functions and control modes of different types of power electronic equipment, conducting in-depth research on the advanced operation and control technology of power systems with large-scale renewable energy integration is the key to implementing the clean energy transition and constructing modern smart grids. This Special Issue focuses on the development of power electronics and applications in smart grids to promote the grid connection of renewable energy and improve the flexible regulation ability of the smart grid. Topics of interest for publication include, but are not limited to:

  • Developments and key technologies of power electronic equipment;
  • Operation analysis and control of flexible DC transmission and distribution systems;
  • Active support control of renewable energy integrated power systems;
  • Operation analysis and control of AC-DC microgrids;
  • DC networking and control technology for offshore wind power;
  • Advanced control of electrical energy storages in microgrids.

Dr. Ziwen Liu
Dr. Jinmu Lai
Dr. Ji Han
Guest Editors

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 submissions that pass pre-check are 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. Electronics 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 2400 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

  • power electronics
  • ac/dc converters
  • modular multilevel converters
  • energy conversion
  • renewable energy
  • microgrid operation and control
  • energy storage
  • power system control
  • smart grid
  • energy internet

Published Papers (2 papers)

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Research

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18 pages, 6770 KiB  
Article
A Unified Active Frequency Regulating and Maximum Power Point Tracking Strategy for Photovoltaic Sources
by Hongda Cai, Yanghong Xia, Pengcheng Yang, Jing Li, Yongzhi Zhou and Wei Wei
Electronics 2023, 12(16), 3467; https://doi.org/10.3390/electronics12163467 - 16 Aug 2023
Viewed by 792
Abstract
In order to optimize the extraction of solar energy, photovoltaic sources are commonly operated under the control of the so-called maximum power point (MPPT) strategy. However, as the rate of PV installations increases explosively, traditional MPPT algorithms may cause problems such as frequency [...] Read more.
In order to optimize the extraction of solar energy, photovoltaic sources are commonly operated under the control of the so-called maximum power point (MPPT) strategy. However, as the rate of PV installations increases explosively, traditional MPPT algorithms may cause problems such as frequency deviation and power fluctuations, making system frequency stability a challenge due to the inherent intermittent and stochastic nature of PVs. Consequently, in order to reduce the investment and maintenance costs of storage systems, innovative control is expected for PV sources to provide ancillary services for the system, especially for weak systems such as microgrids. In this paper, a novel active power control (APC) strategy, based on characteristic curve fitting, is proposed to flexibly regulate the PV output power. The transient process performance and robustness of the system are improved with the proposed APC strategy. In conjunction, an f–P droop mechanism is designed to provide a frequency regulating (FR) service for the AC microgrid. The comprehensive control strategy unifies the FR function with the traditional MPPT function in a single control structure, allowing the PV source to operate either in the MPPT mode when the system frequency is nominal or in FR mode when the frequency exceeds it. The transition between MPPT and FR is autonomous and fully decentralized, which improves the PV generation efficiency as well as ensuring generation fairness among different parallel PV sources. Importantly, the proposed control strategy does not require any internal bundled energy within the PV generation system to achieve FR capability, but it effectively collaborates with the system-level energy storage system, thus reducing the necessary battery capacity. A detailed dynamic model of a PV generation system is constructed to validate the feasibility and effectiveness of the proposed control strategy. Full article
(This article belongs to the Special Issue Development of Power Electronics and Smart-Grids)
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Review

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20 pages, 4809 KiB  
Review
Research Review on Multi-Port Energy Routers Adapted to Renewable Energy Access
by Jinghua Zhou and Jiangbo Wang
Electronics 2024, 13(8), 1493; https://doi.org/10.3390/electronics13081493 - 14 Apr 2024
Viewed by 591
Abstract
With the continuous development of renewable energy technologies, both domestically and internationally, the focus of energy research has gradually shifted towards renewable energy directions such as distributed photovoltaics and wind power. The penetration rate of renewable energy generation is constantly increasing, at the [...] Read more.
With the continuous development of renewable energy technologies, both domestically and internationally, the focus of energy research has gradually shifted towards renewable energy directions such as distributed photovoltaics and wind power. The penetration rate of renewable energy generation is constantly increasing, at the same time, the elements in the grid are becoming increasingly complex, and large-scale energy storage, as well as a variety of electricity loads such as electric vehicle charging piles and data centers are gradually appearing. Therefore, traditional distribution methods of the power grid are difficult to ensure the stable operation of the power system and cannot achieve efficient integration of renewable energy. Consequently, some scholars have proposed the concept of an energy internet. Compared to traditional power grids, the energy internet employs more comprehensive power electronics and communication technologies, enabling the interconnection of various new and traditional energy sources, and effectively integrating renewable energy. As the core device in the energy internet, the energy router plays a role in energy transformation and distribution, facilitating multi-information interconnection and multi-energy exchange within the energy internet. At the level of distribution network, the energy router can realize the efficient access of various forms of energy and the flexible control and management, which is of great significance for the optimal operation of distribution network. Against this backdrop, this paper reviews the development and current research status of energy routers, systematically analyzes the typical topologies and related control technologies of multi-port energy routers and summarizes and forecasts key issues and future development trends, aiming to provide thoughts and reference for subsequent related research. Full article
(This article belongs to the Special Issue Development of Power Electronics and Smart-Grids)
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