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: 30 September 2025 | Viewed by 4481

Special Issue Editors


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

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

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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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Related Special Issue

Published Papers (5 papers)

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Research

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26 pages, 2834 KiB  
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
Viewed by 173
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
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15 pages, 4289 KiB  
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
Viewed by 177
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
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31 pages, 5397 KiB  
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 878
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
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17 pages, 2677 KiB  
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
Viewed by 862
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
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Review

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35 pages, 13200 KiB  
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
Viewed by 1522
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
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