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Power Electronics and AC Machine Drive System

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

Deadline for manuscript submissions: closed (20 December 2021) | Viewed by 16045

Special Issue Editor

Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
Interests: power electronics and AC machine drive systems; AC/DC microgrid; renewable energy; distributed generation system; wind power generation system; design of DSP-based digital controllers; power conversion system and quality robust control; sensorless drive systems for AC machines
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

As automation is highly expanded in industrial processes for a variety of applications, power electronics and the design of a high-performance AC machine drive system are becoming major concerns in the development of industrial systems. Currently, power electronics and AC machine drive systems are employed in lots of areas, such as industrial processes, consumer electronics, electric vehicles, and electric power generation. This Special Issue will focus on power electronics and the AC machine drive systems they are connected to. Studies regarding all different areas of power electronics and AC drive systems are invited, which include power conversion of renewable energy, electric vehicle, microgrid, digital control of AC machine drive system, DSP-based digital controller design, and robust/nonlinear control of AC machine drive system. Both theoretical and experimental works are welcomed.

Prof. Kyeong-Hwa Kim
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.

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Keywords

  • Power conversion of renewable energy
  • Electric vehicle
  • Microgrid
  • Digital control of AC machine drive system
  • DSP-based digital controller design
  • Robust control
  • Nonlinear control

Published Papers (5 papers)

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Editorial

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8 pages, 238 KiB  
Editorial
The Recent Development of Power Electronics and AC Machine Drive Systems
by Al Faris Habibullah, Seung-Jin Yoon, Thuy Vi Tran, Yubin Kim, Dat Thanh Tran and Kyeong-Hwa Kim
Energies 2022, 15(21), 7913; https://doi.org/10.3390/en15217913 - 25 Oct 2022
Cited by 1 | Viewed by 1226
Abstract
Currently, power electronics and AC machine drive systems are employed in numerous areas, such as in industrial processes, consumer electronics, electric vehicles (EVs), renewable-energy-source (RES)-based distributed generation (DG) systems, and electric power generation systems. As RESs such as wind and solar are attracting [...] Read more.
Currently, power electronics and AC machine drive systems are employed in numerous areas, such as in industrial processes, consumer electronics, electric vehicles (EVs), renewable-energy-source (RES)-based distributed generation (DG) systems, and electric power generation systems. As RESs such as wind and solar are attracting relatively more attention due to environmental issues caused by fossil fuel use, various RESs have been integrated into the utility grid (UG) as DG systems. As a result, the concept of a microgrid (MG), which constructs an electrical power system with DGs, energy storage systems (ESSs), and loads, has emerged. Recently, the DG-based MG has been regarded as a promising and flexible technology for those involved in constructing electric power systems. This article presents future technology and recent developments in applied power electronics. In this Special Issue, “The Recent Development of Power Electronics and AC Machine Drive Systems”, four papers were published highlighting recent developments in this field. In addition, other topics beyond the coverage of the published articles are highlighted by a guest editor to address other trends and future topics related to the Special Issue. Through an in-depth investigation of recent development trends, this article seeks to encourage related studies in power electronics. Full article
(This article belongs to the Special Issue Power Electronics and AC Machine Drive System)

Research

Jump to: Editorial

15 pages, 4901 KiB  
Article
Reducing Energy Consumption and Increasing the Performances of AC Motor Drives Using Fuzzy PI Speed Controllers
by Constantin Volosencu
Energies 2021, 14(8), 2083; https://doi.org/10.3390/en14082083 - 08 Apr 2021
Cited by 6 | Viewed by 1734
Abstract
Alternating current electric drives are widely used in many commercial applications. Increasing energy efficiency and improving the quality of regulation are major goals. The speed control structure of the induction machine with indirect vector control with rotor flux orientation and the speed control [...] Read more.
Alternating current electric drives are widely used in many commercial applications. Increasing energy efficiency and improving the quality of regulation are major goals. The speed control structure of the induction machine with indirect vector control with rotor flux orientation and the speed control structure of the permanent magnet synchronous machine with vector control with rotor flux orientation are taken into account. The control structures were modeled and simulated in Simulink. Different simulation regimes were made for different load torques and different parameters. Following the analyses performed, it was highlighted that the fuzzy regulation ensures the reduction of the energy consumption in transient states and the improvement in the quality indicators of the regulation. The fuzzy control systems are robust to the errors of identification of the machine parameters and to the effect of the disturbing load torque. Full article
(This article belongs to the Special Issue Power Electronics and AC Machine Drive System)
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19 pages, 11662 KiB  
Article
Modeling and Control of a Multifunctional Three-Phase Converter for Bidirectional Power Flow in Plug-In Electric Vehicles
by Reza Sabzehgar, Yaser M. Roshan and Poria Fajri
Energies 2020, 13(10), 2591; https://doi.org/10.3390/en13102591 - 20 May 2020
Cited by 11 | Viewed by 2900
Abstract
A nonlinear sliding-mode controller for a three-phase converter, utilized in plug-in electric vehicles (PEVs), is proposed in this paper. The proposed controller enables the utilized converter to perform multiple functions during different operating modes of the vehicle, i.e., grid-to-vehicle (G2V) and vehicle-to-grid (V2G) [...] Read more.
A nonlinear sliding-mode controller for a three-phase converter, utilized in plug-in electric vehicles (PEVs), is proposed in this paper. The proposed controller enables the utilized converter to perform multiple functions during different operating modes of the vehicle, i.e., grid-to-vehicle (G2V) and vehicle-to-grid (V2G) modes. The bidirectional three-phase converter and the proposed controller operate as a power factor correction circuit, bridgeless boost converter, and rectifier during G2V mode (i.e., plug-in charging), and it operates as a conventional single-stage inverter during V2G mode. The stability analysis of the proposed controller is performed by defining a proper Lyapunov function. The functionality of the proposed nonlinear controller is first evaluated through simulation studies. The feasibility and effectiveness of the proposed control strategy is then validated using an industrial control card through a hardware-in-the-loop (HIL) experimental testbed. Full article
(This article belongs to the Special Issue Power Electronics and AC Machine Drive System)
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13 pages, 7096 KiB  
Article
Hybrid PWM Control for Regulating the High-Speed Operation of BLDC Motors and Expanding the Current Sensing Range of DC-link Single-Shunt
by Nam Huh, Hyung-Seok Park, Man Hyung Lee and Jang-Mok Kim
Energies 2019, 12(22), 4347; https://doi.org/10.3390/en12224347 - 15 Nov 2019
Cited by 12 | Viewed by 5549
Abstract
This study developed a hybrid pulse width modulation (PWM) control method intended for use in a high-speed brushless dc (BLDC) motor drive system that uses DC-link single-shunt current measurement. The method is designed to regulate rapid operation and expand the current sensing range [...] Read more.
This study developed a hybrid pulse width modulation (PWM) control method intended for use in a high-speed brushless dc (BLDC) motor drive system that uses DC-link single-shunt current measurement. The method is designed to regulate rapid operation and expand the current sensing range of the aforementioned system and measurement, respectively. The operating characteristics of most typical PWM methods for BLDC motors were analyzed, after which, a PWM approach suitable for high-speed operation was identified. On the basis of the selected approach, the measurable range of DC-link single-shunt current was examined mathematically to determine a PWM method that is advantageous for current sensing. The results of the two analyses were used as guidance in formulating the proposed hybrid PWM control algorithm. Finally, the PWM method put forward in this work was verified through experimentation. Full article
(This article belongs to the Special Issue Power Electronics and AC Machine Drive System)
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27 pages, 13915 KiB  
Article
Frequency Adaptive Current Control Scheme for Grid-connected Inverter without Grid Voltage Sensors Based on Gradient Steepest Descent Method
by Thuy Vi Tran, Myungbok Kim and Kyeong-Hwa Kim
Energies 2019, 12(22), 4266; https://doi.org/10.3390/en12224266 - 08 Nov 2019
Cited by 10 | Viewed by 3606
Abstract
This paper presents a frequency adaptive grid voltage sensorless control scheme of a grid-connected inductive–capacitive–inductive (LCL)-filtered inverter, which is based on an adaptive current controller and a grid voltage observer. The frequency adaptive current controller is constructed by a full-state feedback regulator with [...] Read more.
This paper presents a frequency adaptive grid voltage sensorless control scheme of a grid-connected inductive–capacitive–inductive (LCL)-filtered inverter, which is based on an adaptive current controller and a grid voltage observer. The frequency adaptive current controller is constructed by a full-state feedback regulator with the augmentation of multiple control terms to restrain not only the inherent resonance phenomenon that is caused by LCL filter, but also current harmonic distortions from an adverse grid environment. The number of required sensing devices is minimized in the proposed scheme by means of a discrete-time current-type observer, which estimates the system state variables, and gradient-method-based observers, which estimate the grid voltages and frequency simultaneously at different grid conditions. The estimated grid frequency is utilized in the current control loop to provide high-quality grid-injected currents, even under harmonic distortions and the frequency variation of grid voltages. As a result, the grid frequency adaptive control performance as well as the robustness against distorted grid voltages can be realized. Finally, an inverter synchronization task without using grid voltage sensors is accomplished by a fundamental grid voltage filter and a phase-locked loop to detect the actual grid phase angle. The stability and convergence performance of the proposed observers have been studied by means of the Lyapunov theory to ensure a high accuracy tracking performance of estimated variables. Simulation and experimental results are presented to validate the feasibility and the effectiveness of the proposed control approach. Full article
(This article belongs to the Special Issue Power Electronics and AC Machine Drive System)
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