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Advancements in Electric Motors, Drives, Power Converters and Related Systems,...
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Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition

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

Deadline for manuscript submissions: closed (30 September 2025) | Viewed by 11827

Special Issue Editors

Dr. Ji Han

E-Mail Website
Guest Editor
College of New Energy, Harbin Institute of Technology at Weihai, Weihai 264200, China
Interests: wind power; artificial intelligence; power system operation
Special Issues, Collections and Topics in MDPI journals
Dr. Yaqi Shen

E-Mail Website
Guest Editor
School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
Interests: wind power; power system dynamic stability; broadband oscillation
Special Issues, Collections and Topics in MDPI journals
Dr. Yikai Wang

E-Mail Website
Guest Editor
Department of Electrical Engineering, North China Electric Power University, Baoding 071000, China
Interests: power system protection and control; fault analysis and diagnosis
Special Issues, Collections and Topics in MDPI journals
Dr. Jian Qiao

E-Mail Website
Guest Editor
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071000, China
Interests: power system relay protection; main equipment relay protection; variable speed pumped storage protection and control

Special Issue Information

Dear Colleagues,

Following the success of the 1st Edition of this Special Issue (https://www.mdpi.com/journal/electronics/special_issues/AEMDPCRS_electronics), in the 2nd Edition, we continue to assist all those interested in the topic to promote their vision and ideas.

This Special Issue will include, but is not limited to, the application of electric motors, drives, power converters and related systems to address the following areas:

  • Power electronic-based power systems (PEPS);
  • Power converters for mechanical, kinetic, and thermal heat sources;
  • All aspects of DC/DC, DC/AC, AC/AC, AC/DC power converters;
  • Ultra-low-power-consumption power converters;
  • Energy harvesting and power converters;
  • Power converters for new energy power generation systems;
  • Optimal design for cost-effective power converter;
  • Modulation and control techniques of motor drives;
  • Enhancement of power density, efficiency, and reliability of motor drives;
  • Performance evaluation of different motor drive topologies.

Dr. Ji Han
Dr. Yaqi Shen
Dr. Yikai Wang
Dr. Jian Qiao
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 250 words) can be sent to the Editorial Office for assessment.

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

  • electrical motors
  • power converters
  • electrical drives
  • power electronics
  • electric vehicles
  • industrial, commercial, and residential applications
  • power control system
  • power semiconductor devices
  • multilevel converters
  • fault diagnosis in electrical motors and drives
  • energy efficiency
  • electrical propulsion
  • wide-band-gap power electronic device

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
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  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Related Special Issues

Published Papers (9 papers)

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Research

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18 pages, 3234 KB  
Article
Dimension Reduction Method Preserving Transient Characteristics for WTGS with Virtual Inertial Control Based on Trajectory Eigenvalue
by Biyang Wang, Shuguo Yao, Li Li, Tong Wang, Yu Kou, Yuxin Gan, Qinglei Zhang and Xiaotong Wang
Electronics 2026, 15(1), 157; https://doi.org/10.3390/electronics15010157 - 29 Dec 2025
Viewed by 268
Abstract
Establishing a reduced-order model (ROM) of the wind turbine generator system (WTGS) preserving transient characteristics is a fundamental requirement for the transient stability analysis of power systems. This study introduces a novel dimension reduction framework based on trajectory eigenvalues, integrated with virtual inertia [...] Read more.
Establishing a reduced-order model (ROM) of the wind turbine generator system (WTGS) preserving transient characteristics is a fundamental requirement for the transient stability analysis of power systems. This study introduces a novel dimension reduction framework based on trajectory eigenvalues, integrated with virtual inertia control (VIC). The framework facilitates multi-timescale state variable partitioning through a reversible mapping, which is derived from eigenvalue dominance and participation metrics. Based on this, dimension reduction is performed using singular perturbation theory (SPT). Taking a direct-drive wind turbine generator as an example, this paper establishes a ROM of the WTGS with VIC preserving transient characteristics, based on the proposed reduction method. Comprehensive time-domain simulations in MATLAB/Simulink validate the model’s accuracy and computational efficacy. Full article
(This article belongs to the Special Issue Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition)
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26 pages, 6618 KB  
Article
A Multi-Mode Oscillation Suppression Strategy for Grid-Connected Inverter Systems Based on Amplitude–Phase Reconstruction
by Haibin Sun, Guobin Fu, Xuebin Wang, Yuxin Gan, Yujie Ding, Shangde Sun and Tong Wang
Electronics 2025, 14(23), 4761; https://doi.org/10.3390/electronics14234761 - 3 Dec 2025
Viewed by 482
Abstract
As the primary interface for integrating renewable energy sources such as wind and solar power into the grid, inverters are prone to inducing sub-/super-synchronous or medium-to-high-frequency oscillations during grid-connected operation under weak grid conditions. Optimizing the control structure of a single wind turbine [...] Read more.
As the primary interface for integrating renewable energy sources such as wind and solar power into the grid, inverters are prone to inducing sub-/super-synchronous or medium-to-high-frequency oscillations during grid-connected operation under weak grid conditions. Optimizing the control structure of a single wind turbine inverter struggles to address multi-mode resonance issues comprehensively. Therefore, a cooperative control strategy for parallel-coupled inverters is proposed. First, a frequency-domain impedance reconstruction method for parallel wind turbines is proposed based on the phase-neutralizing characteristics and damping variation patterns of parallel-coupled impedances. Second, the damping characteristics of inverters are enhanced through the design of an additional damping controller, while the phase-frequency characteristics of wind turbines are improved using active damping based on notch filters. Finally, simulation models based on 2.5 MW permanent magnet synchronous generator (PMSG) units validate the effectiveness of the control strategy. Research results demonstrate that this cooperative control strategy effectively suppresses sub-/super-synchronous and medium-to-high-frequency oscillations: In the 0~300 Hz key oscillation band, the amplitude suppression rate of oscillating current reaches ≥60%, the total harmonic distortion (THD) of the 5th harmonic at the grid connection point decreases from 4.465% to 3.518%. Full article
(This article belongs to the Special Issue Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition)
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20 pages, 17566 KB  
Article
An Isolated AC-DC LED Electronic Lighting Driver Circuit with Power Factor Correction
by Chun-An Cheng, Hung-Liang Cheng, En-Chih Chang and Man-Tang Chang
Electronics 2025, 14(19), 3953; https://doi.org/10.3390/electronics14193953 - 7 Oct 2025
Cited by 1 | Viewed by 1135
Abstract
Light-emitting diodes (LEDs) have gained widespread adoption as solid-state lighting sources due to their compact size, long operational lifetime, high brightness, and mechanical robustness. This paper presents the development and implementation of an isolated AC-DC LED electronic lighting driver circuit that integrates a [...] Read more.
Light-emitting diodes (LEDs) have gained widespread adoption as solid-state lighting sources due to their compact size, long operational lifetime, high brightness, and mechanical robustness. This paper presents the development and implementation of an isolated AC-DC LED electronic lighting driver circuit that integrates a modified flyback converter with a lossless snubber circuit, along with inherent power factor correction (PFC). The proposed design operates the transformer’s magnetizing inductor in the discontinuous conduction mode (DCM), thereby naturally achieving PFC without the need for complex control circuitry. Furthermore, the circuit is capable of recycling the energy stored in the transformer’s leakage inductance, improving overall efficiency. The input current harmonics are shown to comply with the IEC 61000-3-2 Class C standard. A 72 W (36 V/2 A) prototype has been constructed and tested under a 110 V AC input. Experimental results confirm the effectiveness of the proposed design, achieving a power factor of 0.9816, a total harmonic distortion (THD) of 12.094%, an output voltage ripple factor of 9.7%, and an output current ripple factor of 11.22%. These results validate the performance and practical viability of the proposed LED driver architecture. Full article
(This article belongs to the Special Issue Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition)
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13 pages, 3619 KB  
Article
Analysis of Low-Signal Behavior in Electric Motors for Auto-Motive Applications: Measurement, Impedance Evaluation, and Dummy Load Definition
by Frank Denk, Tobias Hofbauer and Mohammad Valizadeh
Electronics 2025, 14(13), 2610; https://doi.org/10.3390/electronics14132610 - 27 Jun 2025
Viewed by 579
Abstract
This study investigates the low-signal behavior of electric motors in automotive applications, emphasizing impedance measurement, evaluation, and the definition of a simplified dummy load. A comprehensive experimental analysis was conducted on two induction motors with different power ratings (300 W and 45 kW), [...] Read more.
This study investigates the low-signal behavior of electric motors in automotive applications, emphasizing impedance measurement, evaluation, and the definition of a simplified dummy load. A comprehensive experimental analysis was conducted on two induction motors with different power ratings (300 W and 45 kW), exploring the influence of winding topology, rotor position, and excitation amplitude on the impedance response. A simplified equivalent circuit model (ECM), derived solely from terminal impedance measurements, was developed and validated to construct a practical dummy load. This model facilitates realistic simulations without requiring detailed internal motor specifications. Experimental results confirm that the dummy load accurately replicates the measured impedance characteristics in the low-to-mid frequency range, demonstrating its effectiveness for electromagnetic interference (EMI) prediction and system-level simulations in automotive electric drive system. Full article
(This article belongs to the Special Issue Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition)
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26 pages, 2834 KB  
Article
Two-Degree-of-Freedom Proportional Integral Controllers for Stability Enhancement of Power Electronic Converters in Weak Grids: Inverter and Rectifier Operating Modes
by Ricardo Vidal-Albalate, José Jesús Tejedor Bomboi, Carlos Díaz-Sanahuja and Ignacio Peñarrocha-Alós
Electronics 2025, 14(8), 1565; https://doi.org/10.3390/electronics14081565 - 12 Apr 2025
Cited by 1 | Viewed by 1239
Abstract
Future power generation plants will be largely based on renewable energy sources such as wind or photovoltaic power. These plants are connected to the grid through power electronic converters, which may present stability problems, specifically in weak grids. Consequently, numerous stabilities studies have [...] Read more.
Future power generation plants will be largely based on renewable energy sources such as wind or photovoltaic power. These plants are connected to the grid through power electronic converters, which may present stability problems, specifically in weak grids. Consequently, numerous stabilities studies have been conducted. In these studies, converters work as inverters; however, in power electronic interfaced loads, energy storage systems or High-Voltage Direct Current (HVDC) links, power converters can also function as a rectifier. Stability studies focusing on the rectifier operation have received little attention in previous research. In this paper, the Voltage Source Converter (VSC) stability is analysed for both the inverter and rectifier modes, with particular focus on the influence of the Phase-Locked Loop (PLL) and the current controllers’ bandwidths. Additionally, a Two-Degree-of-Freedom Proportional Integral (2DOF-PI) controller is proposed to expand the stable operating range. The stability study is carried out using a small-signal model validated through PSCAD simulations. The results show that for inverter operations, a slow PLL and fast current controllers yield better performance, whereas for rectifier operation, a fast PLL and slow current controllers are recommended. Finally, a robustness study based on the H∞-norm is carried out to provide some tuning recommendations for the controller parameters, confirming the different behaviour in inverter and rectifier operation. Full article
(This article belongs to the Special Issue Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition)
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15 pages, 4289 KB  
Article
Advanced 3D Nonlinear Magnetic Equivalent Circuit Model for Overhang-Type WRSM Design
by Hyun-Soo Seol
Electronics 2025, 14(7), 1304; https://doi.org/10.3390/electronics14071304 - 26 Mar 2025
Cited by 1 | Viewed by 860
Abstract
The instability in rare-earth material supply and rising costs have driven research into rare-earth-free electric motors. Among various alternatives, wound rotor synchronous motors (WRSMs) stand out due to their adjustable excitation, enabling high torque at low speeds, and efficient field weakening at high [...] Read more.
The instability in rare-earth material supply and rising costs have driven research into rare-earth-free electric motors. Among various alternatives, wound rotor synchronous motors (WRSMs) stand out due to their adjustable excitation, enabling high torque at low speeds, and efficient field weakening at high speeds. Unlike permanent magnet synchronous motors (PMSMs), WRSMs offer greater operational flexibility and eliminate the risk of demagnetization. However, accurately modeling WRSMs remains challenging, especially when considering axial fringing flux and leakage components, which significantly affect motor performance. To address this challenge, this paper proposes a 3D nonlinear magnetic equivalent circuit (MEC) model that explicitly incorporates axial flux components and leakage paths in WRSMs with overhang rotor structures. Unlike conventional 2D MEC models, which fail to capture axial flux interactions, the proposed approach improves prediction accuracy while significantly reducing computational costs compared to full 3D finite element analysis (FEA). The model was validated through comparisons with 3D FEA simulations and experimental back-EMF measurements, demonstrating its accuracy and computational efficiency. The results confirm that the 3D nonlinear MEC model effectively captures axial flux paths and leakage components, making it a valuable tool for WRSM design and analysis. Future research will focus on further refining the model, incorporating hysteresis loss modeling, and developing hybrid MEC–FEA simulation techniques to enhance its applicability. Full article
(This article belongs to the Special Issue Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition)
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31 pages, 5397 KB  
Article
Load Sensitivity Correlation Factor-Based Steady-State Power Flow Allocation Method for Independent DC Bus Structure Multiport Power Electronic Transformer
by Junchi Li, Junyong Wu, Fei Xiong and Liangliang Hao
Electronics 2025, 14(2), 279; https://doi.org/10.3390/electronics14020279 - 11 Jan 2025
Viewed by 1288
Abstract
The independent DC bus structure multiport power electronic transformer (IDBS-MPET) is a novel power electronic transformer designed to integrate multiple DC sources and DC loads. Due to the configuration of DC ports, which are directly constructed by the parallel connection of dual active [...] Read more.
The independent DC bus structure multiport power electronic transformer (IDBS-MPET) is a novel power electronic transformer designed to integrate multiple DC sources and DC loads. Due to the configuration of DC ports, which are directly constructed by the parallel connection of dual active bridge (DAB) converters, the distribution of DC sources and DC loads among the three phases becomes unbalanced. In cases where the load power at certain ports is too high, this imbalance may lead to the over-modulation of the front-end H-bridge (HB). Since the output power at a certain port in the IDBS-MPET is constrained by the loads at other ports, this paper proposes a multiport steady-state power flow allocation method. This method establishes the load sensitivity correlation factor to enable all the ports to adjust power cooperatively based on it. By applying the proposed steady-state power flow allocation method, iterative calculations continuously update the priority of all the ports and their load sensitivity correlation factors. This process ensures that the power flow converges to a steady-state solution. Simulation results for two different IDBS-MPETs demonstrate that the power flow at all the ports effectively meets load requirements, while the front-end HB avoids over-modulation, ensuring the safe and stable operation of the IDBS-MPET. The results validate the effectiveness of the proposed steady-state power flow allocation method. Full article
(This article belongs to the Special Issue Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition)
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17 pages, 2677 KB  
Article
Frequency Characteristic Analysis of the VSC-HVDC DC Oscillating Power under AC Sub-Synchronous Disturbances
by Zijun Bin, Xuan Feng, Zilong Miao, Xiangping Kong, Peng Li and Bingbing Shao
Electronics 2024, 13(17), 3445; https://doi.org/10.3390/electronics13173445 - 30 Aug 2024
Cited by 1 | Viewed by 1786
Abstract
The DC-side response characteristics of the VSC-HVDC transmission system under AC-side sub-synchronous disturbances may lead to the propagation of AC/DC oscillations, and then there may be non-fundamental frequency oscillation on the DC-side. To clarify the interactive influence mechanism and propagation evolution law of [...] Read more.
The DC-side response characteristics of the VSC-HVDC transmission system under AC-side sub-synchronous disturbances may lead to the propagation of AC/DC oscillations, and then there may be non-fundamental frequency oscillation on the DC-side. To clarify the interactive influence mechanism and propagation evolution law of the AC and DC side sub-synchronous oscillations in the VSC-HVDC transmission system, the frequency characteristics of the DC-side oscillation power are investigated by considering the effect of converter control links. First, the AC-side voltage and current frequency responses under single/multiple SSO components are analyzed. Secondly, the frequency characteristics of the DC-side power after the injection of single/multiple SSO components are investigated. Meanwhile, the effect of system control parameters on the sub-synchronous responses of the DC-side power is investigated. Finally, the theoretical analysis is verified with PSCAD/EMTDC simulations. The results show that under the influence of the AC-side SSO components, the DC-side of VSC-HVDC faces the risk of multi-frequency oscillations; when there are multiple SSO components on the AC-side, there is a coupling between the components, and the system control parameters affect the amplitude of the DC-side oscillation power. Full article
(This article belongs to the Special Issue Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition)
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Review

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35 pages, 13200 KB  
Review
Traditional and Hybrid Topologies for Single-/Three-Phase Transformerless Multilevel Inverters
by Ayesha Wajiha Aslam, Jamil Hassan, Víctor Minambres-Marcos, Ali Gaeed Seger Al-salloomee and Carlos Roncero-Clemente
Electronics 2024, 13(20), 4058; https://doi.org/10.3390/electronics13204058 - 15 Oct 2024
Cited by 2 | Viewed by 2925
Abstract
With increasing interest in integrating solar power into the utility grid, multilevel inverters are gaining much more attention for medium- and high-power applications due to their high-quality waveform, low voltage stress across active components, and low total harmonic distortion in output voltage. However, [...] Read more.
With increasing interest in integrating solar power into the utility grid, multilevel inverters are gaining much more attention for medium- and high-power applications due to their high-quality waveform, low voltage stress across active components, and low total harmonic distortion in output voltage. However, to achieve these benefits, a large number of active and passive components are required. A transformer is also required to provide galvanic isolation, which increases its size and weight and reduces its power density and efficiency. In order to overcome the disadvantages posed by transformer-based inverters, research is being conducted on the transformerless topology of multilevel inverters. The first aim of this review article is to summarize traditional transformerless multilevel inverters (TMLIs) considering both single- and three-phase topologies. Secondly, the main aim of this article is to provide a detailed overview of the hybrid topologies of TMLIs that employ fewer components for photovoltaic applications. In addition, this study compares traditional and hybrid single-/three-phase topologies in terms of component count and performance factors, which will be useful to researchers. Full article
(This article belongs to the Special Issue Advancements in Electric Motors, Drives, Power Converters and Related Systems, 2nd Edition)
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