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Advanced Technologies in Power Electronics and Motor Drives

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

Deadline for manuscript submissions: closed (1 May 2023) | Viewed by 12337

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Prof. Dr. Ibrahim Mohd Alsofyani

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Electrical and Computer Engineering, Ajou University, Kyonggi-do 443-749, Korea; SEMI-TS, Kyonggi-do 443-749, Republic of Korea
Interests: power electronics and motor drives
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Power electronics systems dominate the world market with broad applications, from cellphones to electric vehicles and home appliances. Advances in power electronics play a crucial role in battling climate issues and helping nations to achieve a more efficient and greener environment.

One essential branch of power electronics that impacts every aspect of our lives is electric drives. With the rapid emergence of power electronics and control techniques, more advanced electric motor drives are now replacing older motor drives to gain better performance, efficiency, and reliability.

The main objective of this Special Issue is to seek high-quality contributions that highlight emerging power converter topologies and address recent techniques in robust and reliable power electronics converters, motor control methods. The topics of interest include but are not limited to:

Power electronic devices (silicon and wide bandgap);
Power conversion designs, modulation, and control;
Reliability of power electronics;
Modeling and control of components, converters, and systems;
High power/voltage power conversion;
Electric drive systems;
Sensorless methods for electric drives;
Electric machines and drives for transportation electrification;
Power electronics for hybrid and electric vehicles.

Prof. Dr. Ibrahim Mohd Alsofyani
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.

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
motors
power converters
sensorless control
reliability

Published Papers (6 papers)

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Research

17 pages, 12442 KiB

Open AccessArticle

Comparative Study of Magnet Temperature Estimation at Low Speeds Based on High-Frequency Resistance and Inductance

by Hwigon Kim, Seon-Gu Kang, Jae-Jung Jung and Hyun-Sam Jung

Electronics 2023, 12(9), 2011; https://doi.org/10.3390/electronics12092011 - 26 Apr 2023

Cited by 1 | Viewed by 1229

Abstract

Interior permanent magnet synchronous motors have been widely used in electric vehicles. These motors employ Nd-Fe-B as the permanent magnet, which is vulnerable to temperature variations. Moreover, some features of Nd-Fe-B magnets are related to temperature, which can affect motor characteristics. Therefore, magnet temperature is an important parameter and methods for estimating it have been developed. In particular, a signal injection method has been developed for low-speed regions. In this method, two parameters are employed: high-frequency resistance and high-frequency inductance. In this paper, these two methods are compared to determine which parameter is more appropriate for estimations at low speeds and to reveal whether signal injection methods can be applied to the standstill condition. The comparison indicated that the high-frequency inductance-based method has a stronger correlation with the magnet temperature at low speed and standstill conditions than the high-frequency resistance-based method. Full article

(This article belongs to the Special Issue Advanced Technologies in Power Electronics and Motor Drives)

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24 pages, 16431 KiB

Open AccessArticle

Enhancement and Performance Analysis for Modified 12 Sector-Based Direct Torque Control of AC Motors: Experimental Validation

by Mussaab M. Alshbib, Ibrahim Mohd Alsofyani and Mohamed Mussa Elgbaily

Electronics 2023, 12(3), 549; https://doi.org/10.3390/electronics12030549 - 20 Jan 2023

Cited by 1 | Viewed by 2096

Abstract

Direct torque control (DTC) is a promising control algorithm that is characterized by simplicity and effective performance for the AC motors drive systems. The design of the switching table is an important issue that directly affects the performance of the motor drive. The majority of the prior literature relies on the researcher’s knowledge when establishing the voltage vectors of the switching table to be applied to the inverter. Consequently, torque and flux ripples can still be large. In this paper, a modified twelve sector-based DTC is proposed to improve the AC motor drive. The proposed drive system offers several contributions, such as very low torque ripple reduction, faster dynamics, and reduced stator flux ripples compared to the classical DTC. Additionally, the proposed controller can provide high robustness at very low speed under parameter variation. The analytically developed switching table also contributes to reducing the switching frequency ratio between 40% to 50%. The aim of the aforementioned improvements is to obtain a quiet operation of the induction motor without vibration or audible noise. Simulation results of the proposed method were performed in MATLAB/Simulink environment. Furthermore, for the sake of validation and effectiveness of the method, experimental tests were conducted using dSPACE based platform. Finally, a fair comparison of both the proposed and classical methods was performed that revealed the superiority of the proposed strategy. Full article

(This article belongs to the Special Issue Advanced Technologies in Power Electronics and Motor Drives)

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16 pages, 6150 KiB

Open AccessFeature PaperArticle

Unidirectional Finite Control Set-Predictive Torque Control of IPMSM Fed by Three-Level NPC Inverter with Simplified Voltage-Vector Lookup Table

by Ibrahim Mohd Alsofyani and Laith M. Halabi

Electronics 2023, 12(1), 252; https://doi.org/10.3390/electronics12010252 - 03 Jan 2023

Cited by 2 | Viewed by 2079

Abstract

This paper proposes a unidirectional finite control set-predictive toque control (UFCS-PTC) method for a three-level neutral-point-clamped (3L-NPC) inverter fed interior permanent magnet synchronous motor (IPMSM). The proposed algorithm can lower the complexity of PTC fed by 3L-NPC by reducing the number of admissible voltage vectors (VVs) effectively. The candidate VVs are restricted within 60° of the voltage space voltage diagram (VSVD), which is the nearest to the flux trajectory for each 60° flux sector. After the segmentation of the VSVD and flux trajectory, the proposed method can keep VVs in one direction during the prediction process, which can result in significant torque/flux reduction. Therefore, the UFCS-PTC can reduce the number of admissible VVs from twenty-seven to six while achieving excellent steady-state performance in terms of reduced flux and torque ripples. Additionally, the proposed method eliminates the need for weighting factor calculation for neutral point voltage associated with a 3L-NPC inverter. The UFCS-PTC of IPMSM also has other features, such as improved balancing capability of the DC-link capacitors’ voltage, small computation time due to the reduced number of admissible voltage vectors considered in the cost function, and easy implementation. The effectiveness of the proposed method is verified through experimental results. Full article

(This article belongs to the Special Issue Advanced Technologies in Power Electronics and Motor Drives)

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15 pages, 4987 KiB

Open AccessArticle

Experimental Evaluation of Predictive Torque Control of IPMSM under Speed Sensor and Sensorless Extended EMF Method

by Ibrahim Mohd Alsofyani and Sadeq Ali Qasem Mohammed

Electronics 2023, 12(1), 68; https://doi.org/10.3390/electronics12010068 - 24 Dec 2022

Cited by 2 | Viewed by 1454

Abstract

This study investigates the impact of the position information on the torque performance for an interior permanent magnet synchronous motor (IPMSM) driven by finite set–predictive torque control (FS-PTC). Unlike induction machines, IPMSMs are significantly sensitive to the rotor position during the motor operation owing to the permanent magnet of the rotor. Any misalignment or displacement of the rotor frame (d-q) can lead to poor prediction of the motor drive performance because the predictive control requires speed/position information during the prediction and evaluation by the cost function. Hence, the performance of the FS-PTC, which uses a speed encoder and senseless extended electromotive force (EMF) estimation, is evaluated and compared with respect to the speed and load conditions. Based on the investigation, the sensorless FS-PTC using the EMF method has superior torque performance and THD reduction compared to the measured speed-based PTC, particularly under large load torque. The performance evaluation of IPMSM was carried out through experimental results. Full article

(This article belongs to the Special Issue Advanced Technologies in Power Electronics and Motor Drives)

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18 pages, 8578 KiB

Open AccessArticle

Linear Active Disturbance Rejection Control of New Double Full-Bridge ZVZCS Converter for Beam Supply

by Haiying Dong, Huaijiang Wang, Guosheng Li and Hao Zhai

Electronics 2022, 11(19), 3062; https://doi.org/10.3390/electronics11193062 - 26 Sep 2022

Viewed by 1140

Abstract

In view of the unstable output voltage of the new double full bridge ZVZCS converter of beam power supply when it is disturbed by external disturbance or internal parameter change in practical application, combined with the characteristics of the beam power supply system model, this paper proposes a beam power supply control strategy based on linear active disturbance rejection control (LADRC). Firstly, the working principle of the new double full bridge ZVZCS converter of beam power supply is analyzed, and considering the parasitic parameters and effective duty cycle of circuit components, the small signal equivalent model under two working modes is established. Secondly, combined with the system model and linear active disturbance rejection control theory, a double closed-loop controller is designed, which takes the second-order LADRC as the outer voltage loop and PI control as the inner current loop. Finally, the simulation and experimental results show that the designed controller has stronger robustness, anti-interference and better dynamic response speed than the traditional double closed-loop PI controller in load switching and dual-mode switching, and has a good development prospect. Full article

(This article belongs to the Special Issue Advanced Technologies in Power Electronics and Motor Drives)

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34 pages, 10740 KiB

Open AccessArticle

All-SiC Traction Converter for Light Rail Transportation Systems: Design Methodology and Development of 165 kVA Prototype

by Doğan Yıldırım, Mehmet Hakan Akşit, Işık Çadırcı and Muammer Ermiş

Electronics 2022, 11(9), 1438; https://doi.org/10.3390/electronics11091438 - 29 Apr 2022

Cited by 1 | Viewed by 3229

Abstract

The design and development of a high-performance 165 kVA, 750 V DC all-silicon carbide (SiC) traction converter for new generation light rail transportation systems (LRTSs) are described. In the design of the traction motor drive, the efficiency of the overall system is maximized and the line current harmonic content of the traction motor is minimized. A complete mathematical model of the physical system is derived to carry out real-time simulations and proper control of the LRTS on a real rail track. The electrical and thermal performances of traction-type SiC power MOSFET modules are compared with those of alternative hybrid and Si-IGBT modules for various switching frequencies. The implementation of the developed system is also described. The performance of the resulting system is verified experimentally on a full-scale physical simulator as well as for various track conditions. Very promising results for the next generation railway traction motor drives have been obtained in terms of performance criteria, such as very high efficiency, low harmonic distortion of the motor line current, low cooling requirement, relatively high switching frequency, and hence, superior controller performance. The effects of the SiC power MOSFET operation on the insulation of the available traction motors are also examined experimentally. This paper is accompanied by a video demonstrating the experimental work. Full article

(This article belongs to the Special Issue Advanced Technologies in Power Electronics and Motor Drives)

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