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Energies
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Energy Efficiency in Electric Motors, Drives, Power Converters and Related...
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Energy Efficiency in Electric Motors, Drives, Power Converters and Related Systems Ⅱ

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F: Electrical Engineering".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 8937

Special Issue Editor

Prof. Dr. Mario Marchesoni

E-Mail Website
Guest Editor
Department of Electrical, Electronic, Telecommunications Engineering and Naval Architecture, University of Genova, Via all’Opera Pia 11A, 16145 Genova, Italy
Interests: electrical drives for electrical/hybrid road vehicles, for railway traction and for naval propulsion; high dynamic performance AC motor drives (asynchronous, synchronous); fuel cell generating systems and energy storage systems (ultracapacitors, batteries) for transportation systems; medium voltage energy static conversion; digital architectures for AC motor drives control; conversion system structures for power conditioning; power converters: analysis and performance optimization by means of modulation and control strategies; conversion systems for reactive power and harmonic distortion minimization; multilevel converter structures; HVDC power converters
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Greetings from the Special Issue Editor.

I am inviting submissions to a Special Issue of Energies on the subject of “Energy Efficiency in Electric Motors, Drives, Power Converters and Related Systems Ⅱ”, which is a continuation of the previous successful Special Issue. Today, there is growing attention focused on increasing the use of renewable energy to guarantee sustainable growth all over the world. In the short term, however, even more interesting results can be obtained by increasing energy efficiency. As an example, the European Union has set itself a 20% energy savings target by 2020, which is roughly equivalent to turning off a few hundred power stations. Today, 20% of all final energy consumption in the EU is in the form of electrical energy, but this is predicted to grow significantly over the next few decades. Given this scenario, but considering also that electric motors in industrial applications consume 35%–40% of the generated electrical energy worldwide, power electronics is a key enabling technology allowing the efficient generation, use, and distribution of electrical energy and the implementation of energy saving applications at reasonable costs, also leading to the huge diffusion of electrical motor drives.

I am pleased to invite you to contribute to this Special Issue. Papers are solicited which cover aspects of energy efficiency, including the following topics and any other relevant topics that may not be directly specified.

  • High efficiency electric machines and electrical drives;
  • High efficiency power converters: topologies, modulation and control;
  • Wide bandgap power electronic devices and applications;
  • Renewable energy systems;
  • Grids, smart grids, and utility applications;
  • Electrical energy storage systems;
  • Energy conversion systems for information technology;
  • Energy efficiency for residential, commercial and industrial applications;
  • Wireless power transfer;
  • Systems for electrical propulsion and transportation electrification;
  • Electric and hybrid vehicles;
  • Highly efficient components for energy conversion.

Prof. Dr. Mario Marchesoni
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. 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 2600 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

  • energy efficiency
  • power electronics
  • electric machines
  • electric drives
  • residential applications
  • industrial applications
  • electrical propulsion
  • energy management
  • power converter
  • modulation strategy
  • control system
  • wide band-gap power electronic devices
  • renewable energy systems
  • smart grids
  • energy storage

Published Papers (4 papers)

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Research

20 pages, 5224 KiB  
Article
Induction Motor Field-Oriented Sensorless Control with Filter and Long Cable
by Lorenzo Carbone, Simone Cosso, Krishneel Kumar, Mario Marchesoni, Massimiliano Passalacqua and Luis Vaccaro
Energies 2022, 15(4), 1484; https://doi.org/10.3390/en15041484 - 17 Feb 2022
Cited by 5 | Viewed by 2141
Abstract
In recent years, part of the efforts of the electric drive researcher has been focused on the study of sensorless control algorithms that allow controlling the machine without a speed measure and with ever-fewer measurement devices. This article proposes a possible solution for [...] Read more.
In recent years, part of the efforts of the electric drive researcher has been focused on the study of sensorless control algorithms that allow controlling the machine without a speed measure and with ever-fewer measurement devices. This article proposes a possible solution for the submarine application of an asynchronous motor. The motor is designed to drive a petrol pump at a depth of three thousand meters. The motor is fed by an inverter that is located on an offshore platform, and they are connected through a filter and a cable that is 19.74 km long. In this application, it is not suitable to use a speed measurement device; in fact, at this depth it is important to use as few components as possible, in order to increase the system reliability. A control algorithm that only needs available electrical measures is proposed below. Full article
(This article belongs to the Special Issue Energy Efficiency in Electric Motors, Drives, Power Converters and Related Systems Ⅱ)
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15 pages, 4203 KiB  
Article
Stability Analysis of Open-Loop V/Hz Controlled Asynchronous Machines and Two Novel Mitigation Strategies for Oscillations Suppression
by Lorenzo Carbone, Simone Cosso, Krishneel Kumar, Mario Marchesoni, Massimiliano Passalacqua and Luis Vaccaro
Energies 2022, 15(4), 1404; https://doi.org/10.3390/en15041404 - 15 Feb 2022
Cited by 6 | Viewed by 1668
Abstract
Asynchronous machines are always widely used in most industrial applications due to their reliability, flexibility, and manoeuvrability. To achieve variable speed operations, the quite simple open-loop V/Hz control is largely utilized. Under open-loop V/Hz control, the nonlinear interaction is well known to cause [...] Read more.
Asynchronous machines are always widely used in most industrial applications due to their reliability, flexibility, and manoeuvrability. To achieve variable speed operations, the quite simple open-loop V/Hz control is largely utilized. Under open-loop V/Hz control, the nonlinear interaction is well known to cause current and torque oscillations while operating at low to medium speeds under light loads. This article presents the stability analysis of induction motors at low–medium frequencies under no-load conditions with the V/Hz control. A system representation in the form of state space is discussed, and the region of instability is plotted against the V/f plane. Two novel and refined methods for the mitigation of oscillations in the region of instability are presented. The two proposed algorithms are finally tested and validated through simulation on an inverter-fed induction motor drive system. Full article
(This article belongs to the Special Issue Energy Efficiency in Electric Motors, Drives, Power Converters and Related Systems Ⅱ)
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21 pages, 8167 KiB  
Article
Energy Management Systems for Grid-Connected Houses with Solar PV and Battery by Considering Flat and Time-of-Use Electricity Rates
by Xincheng Pan, Rahmat Khezri, Amin Mahmoudi, Amirmehdi Yazdani and GM Shafiullah
Energies 2021, 14(16), 5028; https://doi.org/10.3390/en14165028 - 16 Aug 2021
Cited by 12 | Viewed by 2574
Abstract
This paper develops new practical rule-based energy management systems (EMSs) for typical grid-connected houses with solar photovoltaic (PV) and battery by considering different rates for purchasing and selling electricity. The EMSs are developed to supply the household’s loads and reduce operating costs of [...] Read more.
This paper develops new practical rule-based energy management systems (EMSs) for typical grid-connected houses with solar photovoltaic (PV) and battery by considering different rates for purchasing and selling electricity. The EMSs are developed to supply the household’s loads and reduce operating costs of the system based on different options of flat and time-of-use (ToU) rates for buying and selling electricity prices. Four different options are evaluated and compared in this study: (1) Flat-Flat, (2) ToU-Flat, (3) Flat-ToU, and (4) ToU-ToU. The operation cost is calculated based on the electricity exchange with the main grid, the equivalent cost of PV generation, as well as the degradation cost of battery storage. The operation of the grid-connected house with rooftop solar PV and battery is evaluated for a sunny week in summer and a cloudy week in winter to investigate the proper performance for high and low generations of PV. While the developed rule-based EMS are generic and can be applied for any case studies, a grid-connected house in Australia is examined. For this purpose, real data of solar radiation, air temperature, electricity consumption, and electricity rates are used. It is found that the ToU-Flat option has the lowest operating cost for the customers. Full article
(This article belongs to the Special Issue Energy Efficiency in Electric Motors, Drives, Power Converters and Related Systems Ⅱ)
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17 pages, 4834 KiB  
Article
Induction Motor Direct Torque Control with Synchronous PWM
by Alessandro Benevieri, Gianmarco Maragliano, Mario Marchesoni, Massimiliano Passalacqua and Luis Vaccaro
Energies 2021, 14(16), 5025; https://doi.org/10.3390/en14165025 - 16 Aug 2021
Cited by 5 | Viewed by 1839
Abstract
A novel induction motor direct torque control (DTC) algorithm with synchronous modulation is presented. Compared to the traditional DTC method, whose main drawback is the presence of low-frequency torque harmonics (sub-harmonics), in the proposed method, the PWM switching frequency is imposed to be [...] Read more.
A novel induction motor direct torque control (DTC) algorithm with synchronous modulation is presented. Compared to the traditional DTC method, whose main drawback is the presence of low-frequency torque harmonics (sub-harmonics), in the proposed method, the PWM switching frequency is imposed to be an integer multiple of the main supply frequency. This is achieved by continuously adjusting the PWM switching period to significantly reduce low-frequency harmonics. The devised algorithm has been tested on an inverter-fed induction motor drive system, and the obtained results show an important reduction of the sub-harmonic spectral content of the developed torque with respect to a conventional direct torque control while maintaining at the same time a high dynamic response. Full article
(This article belongs to the Special Issue Energy Efficiency in Electric Motors, Drives, Power Converters and Related Systems Ⅱ)
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