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Electronics
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Applications of Power Electronic Circuits and Systems for Future Grid
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Applications of Power Electronic Circuits and Systems for Future Grid

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

Deadline for manuscript submissions: closed (30 April 2020) | Viewed by 20795

Special Issue Editor

Dr. Thaiyal Naayagi Ramasamy

E-Mail Website
Guest Editor
School of Electrical and Electronic Engineering, Newcastle University International Singapore, Singapore 567739, Singapore
Interests: power electronic circuits and systems for aerospace; electric vehicles; smart grids; microgrids and sustainability
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Long-term environmental concerns, population growth, and increased energy demand urge the development of clean and green energy-based power generation. Power electronics plays a vital role in integrating various renewable energy resources to the grid to meet the current energy crisis. Solar and wind are the fastest growing source of renewable energy. The grid should be able to accommodate such renewables without losing its reliability and robustness. The smart grid is an enhanced version of the conventional electricity grid which enables energy security, reliability and integration of various renewable energy resources. Therefore, the future smart grid will pave the way for CO2 reduction and clean energy deployment.

This Special Issue will focus on recent trends and innovation in technologies integrating rooftop PV, floating PV and onshore and offshore wind farms, energy storage systems, novel concepts, fault ride through, state-of-the-art and fault-tolerant converters, smart inverters, electric vehicle charging, microgrid, distributed energy resource control and integration, smart grid, high performance and high power density converters for energy efficient systems for future power systems.

  • Fault-tolerant converters for renewable energy
  • Electric vehicle charging
  • Power electronics for microgrids
  • Power electronic applications in smart grid
  • Power electronics for offshore windfarm integration
  • Advanced power electronic interfaces for PV
  • Energy storage systems
  • Smart inverters
  • High-power density converters
  • Distributed energy resource control and integration
  • Fault-ride through capability of advanced power converters

Dr. Thaiyal Naayagi Ramasamy
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 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.

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Published Papers (5 papers)

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Research

17 pages, 5099 KiB  
Article
A Photovoltaic-Based DC Microgrid System: Analysis, Design and Experimental Results
by Xiaoling Xiong and Yuchen Yang
Electronics 2020, 9(6), 941; https://doi.org/10.3390/electronics9060941 - 5 Jun 2020
Cited by 22 | Viewed by 4020
Abstract
Due to the exhaustion of fossil energy, the utilization of renewable energy resources is developing quickly. Due to the intermittent nature of the renewable energy resources, the energy storage devices are usually adopted in renewable power generation system to enhance the system reliability. [...] Read more.
Due to the exhaustion of fossil energy, the utilization of renewable energy resources is developing quickly. Due to the intermittent nature of the renewable energy resources, the energy storage devices are usually adopted in renewable power generation system to enhance the system reliability. In this paper, the photovoltaic-based DC microgrid (PVDCM) system is designed, which is composed of a solar power system and a battery connected to the common bus via a boost converter and a bidirectional buck/boost converter, respectively. As the photovoltaic (PV) panels might operate in a maximum power point tracking (MPPT) mode or constant voltage mode, meanwhile, the power can flow between the battery and the load bidirectionally. Therefore, for the sake of optimizing power utilization in the PVDCM system, a control strategy making the system able to switch from one operating mode to another smoothly and automatically is proposed in this paper. Moreover, the small-signal modeling method based on averaged state-space is no more applicable in this study, thus the nonlinear analysis method with discrete-time mapping model is adopted for stability analysis. Based on the stability analysis, the closed-loop parameters are designed to make sure the whole system can operate properly in all operating modes. The control strategy and stability analysis based on the nonlinear analysis method in the closed-loop design are verified by experiment results. Full article
(This article belongs to the Special Issue Applications of Power Electronic Circuits and Systems for Future Grid)
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22 pages, 716 KiB  
Article
Multi-Objective Optimal Scheduling of a Hybrid Ferry with Shore-to-Ship Power Supply Considering Energy Storage Degradation
by Kyaw Hein, Xu Yan and Gary Wilson
Electronics 2020, 9(5), 849; https://doi.org/10.3390/electronics9050849 - 20 May 2020
Cited by 27 | Viewed by 4784
Abstract
To improve the operation efficiency and reduce the emission of a solar power integrated hybrid ferry with shore-to-ship (S2S) power supply, a two-stage multi-objective optimal operation scheduling method is proposed. It aims to optimize the two conflicting objectives, operation cost (fuel cost of [...] Read more.
To improve the operation efficiency and reduce the emission of a solar power integrated hybrid ferry with shore-to-ship (S2S) power supply, a two-stage multi-objective optimal operation scheduling method is proposed. It aims to optimize the two conflicting objectives, operation cost (fuel cost of diesel generators (DGs), carbon dioxide (CO2) emission tax and S2S power exchange) and energy storage (ES/ESS) degradation cost, based on the preference of the vessel operator and solar photovoltaic (PV) power output. For the day-ahead optimization, interval forecast data of the PV is used to map the solution space of the objectives with different sets of weight assignment. The solution space from the day-ahead optimization is used as a guide to determine the operating point of the hour-ahead optimization. As for the hour-ahead scheduling, more accurate short-lead time forecast data is used for the optimal operation scheduling. A detailed case study is carried out and the result indicates the operation flexibility improvement of the hybrid vessel. The case study also provides more in-depth information on the dispatching scheme and it is especially important if there are conflicting objectives in the optimization model. Full article
(This article belongs to the Special Issue Applications of Power Electronic Circuits and Systems for Future Grid)
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34 pages, 4182 KiB  
Article
Design and Control of a DC Collection System for Modular-Based Direct Electromechanical Drive Turbines in High Voltage Direct Current Transmission
by Muhammad Ramadan Bin Mohamad Saifuddin, Thaiyal Naayagi Ramasamy and Wesley Poh Qi Tong
Electronics 2020, 9(3), 493; https://doi.org/10.3390/electronics9030493 - 16 Mar 2020
Cited by 2 | Viewed by 3712
Abstract
In response to an increasing demand for offshore turbine-based technology installations, this paper proposes to design a DC collection system for multi-connected direct drive turbines. Using tidal stream farm as the testbed model, inverter design and turbine control features were modelled in compliance [...] Read more.
In response to an increasing demand for offshore turbine-based technology installations, this paper proposes to design a DC collection system for multi-connected direct drive turbines. Using tidal stream farm as the testbed model, inverter design and turbine control features were modelled in compliance with high voltage ride-through capabilities that operate in isochronous mode suggested by IEEE1547-2018. The aim of the paper is twofold. Firstly, operation analyses in engaging a single-stage impedance source inverter as an AC-link busbar aggregator to pilot a parallel-connected electromechanical drive system. It uses a closed-loop voltage controller to secure voltage-active power (Volt/Watt) dynamics in correspondence with turbine’s arbitrary output voltage level. It also aspires to truncate active rectification stages at generation-side as opposed to a traditional back-to-back converter. Secondly, a proposition for a torque-controlled blade pitching system is modelled to render a close to maximum power point tracking using blade elevation and mechanical speed manipulations. The reserve active power generation aids with compensating an over-voltage crisis as a substitute for typical reactive power absorption. The proposed Testbed system was modelled in PSCAD, adopting industrial related specifications and real-time ocean current profiles for HVDC transmission operations. Analytical results have shown a positive performance index and transient responses at respective tidal steam turbine clusters that observe fault ride-through criterion despite assertive operating conditions. Full article
(This article belongs to the Special Issue Applications of Power Electronic Circuits and Systems for Future Grid)
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30 pages, 9338 KiB  
Article
Analysis of Three-Phase Inverter Parallel Operation with Network-Based Control Having Strong Robustness and Wide Time-Scale Compatibility in Droop-Controlled AC Microgrid
by Yao Zhang, Fan Zhang, Yu Quan and Pengfei Zhang
Electronics 2020, 9(2), 376; https://doi.org/10.3390/electronics9020376 - 24 Feb 2020
Cited by 1 | Viewed by 4249
Abstract
The system performances can be potentially enhanced for three-phase inverter parallel operation in droop-controlled AC microgrid by using network-based control, which also benefits for the extension of other control strategies in microgrids (MGs). It is highlighted that some negative factors such as network-induced [...] Read more.
The system performances can be potentially enhanced for three-phase inverter parallel operation in droop-controlled AC microgrid by using network-based control, which also benefits for the extension of other control strategies in microgrids (MGs). It is highlighted that some negative factors such as network-induced time-delays and data dropouts would possibly degrade the system operation. In this paper, the comprehensive analysis of network-based control strategy with strong robustness and wide time-scale compatibility is investigated in islanded mode of an AC microgrid with paralleled inverters. The theoretical evaluation towards time-delay and data dropouts is made and it is verified that its good power-sharing can be obtained under unsatisfactory communication conditions. It has been observed that the time-scale of network-based control can also be designed from several microseconds to milliseconds. Based on this idea, the communication integration of different layers of MGs in hierarchical structure would be realistic. Experimental results have verified the effectiveness of the network-based control strategy and analytical method. Full article
(This article belongs to the Special Issue Applications of Power Electronic Circuits and Systems for Future Grid)
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21 pages, 9932 KiB  
Article
A Novel Self-Powered Dynamic System Using a Quasi-Z-Source Inverter-Based Piezoelectric Vibration Energy Harvester
by Wesley Qi Tong Poh, Muhammad Ramadan Bin Mohamad Saifuddin and Ramasamy Thaiyal Naayagi
Electronics 2020, 9(2), 265; https://doi.org/10.3390/electronics9020265 - 5 Feb 2020
Viewed by 3227
Abstract
The use of quasi-Z-source inverters (qZSIs) for DC-DC power conversion applications has gained much recognition when dealing with grid-tied renewable energy resource integrations. This paper proposes a novel self-powered dynamic system (SPDS) involving a piezoelectric vibration energy harvester (PVEH) using qZSI to establish [...] Read more.
The use of quasi-Z-source inverters (qZSIs) for DC-DC power conversion applications has gained much recognition when dealing with grid-tied renewable energy resource integrations. This paper proposes a novel self-powered dynamic system (SPDS) involving a piezoelectric vibration energy harvester (PVEH) using qZSI to establish interoperability with a DC load rated at 16.15 mW. Based on uncertain output performances from a piezoelectric cantilever beam (CB), the qZSI-based PVEH serves as a dynamic voltage restoration unit that establishes load-following synchronisation. It uses a proportional-integral based boost controller (PI-based BC) to generate strategic ordering of shoot-through voltage amplification into pulse-width modulation (PWM) gating sequences. The SPDS was modelled using two software based on commercially available product specifications: (i) COMSOL Multiphysics to mechanically design and optimise a CB. (ii) PSCAD/EMTDC to electronically design and integrate the qZSI with the optimised CB, while functioning as a testbed to model the SPDS against arbitrary wind speed and structural vibration frequency data collected from an above-ground mass rapid transit (MRT) train station in Khatib, Singapore. The acquired simulation results have depicted desirable transient responses at respective sub-systems, procuring fast settling-time responses, negligible steady-state error, as well as high efficiencies of 94.07% and 91.64% for the CB and SPDS respectively. Full article
(This article belongs to the Special Issue Applications of Power Electronic Circuits and Systems for Future Grid)
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