Special Issue "Power Electronics and AC Machine Drive System"

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "Electrical Power and Energy System".

Deadline for manuscript submissions: 20 February 2020.

Special Issue Editor

Prof. Kyeong-Hwa Kim
E-Mail Website
Guest Editor
Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, South Korea
Interests: distributed generation system; power electronics and AC machine drive system; DSP-based digital controller design; microgrid

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 papers will be 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 1800 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 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 (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Open AccessFeature PaperArticle
Frequency Adaptive Current Control Scheme for Grid-connected Inverter without Grid Voltage Sensors Based on Gradient Steepest Descent Method
Energies 2019, 12(22), 4266; https://doi.org/10.3390/en12224266 - 08 Nov 2019
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)
Back to TopTop