Volume 18, Issue 3 (September 2022)  

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Abstract (1554 Views) | Full-Text (PDF) (1029 Downloads)   |   Highlights
  • A novel sliding mode controller is designed for mitigation of the unbalanced grid currents using the active power filters.
  • Considering existence of different controlling inputs/output in the averaged steady-state model of the system, a unique controller is proposed to improve the response of closed-loop system in a wide operational range.
  • The proposed current controller has zero steady-state error with a fast dynamic response.

Abstract (1765 Views) | Full-Text (PDF) (1457 Downloads)   |   Highlights
  • Investigating the performance of different classical tuning techniques for PID-based temperature control of the milk pasteurization process;
  • Presenting a detailed comparative analysis of the performances using the rise time, settling time, peak amplitude, and overshoot parameters;
  • Providing useful insights into the appropriate tuning strategy for the PID controller to ensure optimum temperature control for milk pasteurization.

Abstract (1163 Views) | Full-Text (PDF) (584 Downloads)   |   Highlights
  • An analytic method is addressed to synthesize arrays of maximum directivity for a specified beamwidth;
  • The Lagrange multiplier method is utilized to reach a square matrix equation.

Abstract (1531 Views) | Full-Text (PDF) (669 Downloads)   |   Highlights
  • The air-cored radial flux Superconducting synchronous machine is studied.
  • The relative advantages and disadvantages of the synchronous machine topologies are compared in detail.
  • Analytical study of these topologies shows that the inversed machine topology leads to more efficient (HTS) wire utilization and hence more economical production.
  • In order to confirm the result obtained by analytical calculations, 2-D (FEM) of the machine is utilized.

Abstract (1305 Views) | Full-Text (PDF) (1377 Downloads)   |   Highlights
  • A 12-bit SAR ADC is designed and implemented for high speed and low power using 22 nm FinFET technology.

Abstract (1616 Views) | Full-Text (PDF) (1951 Downloads)   |   Highlights
  • A brief review of the recently proposed spatial vector modulation (SVM) methods in the literature is presented.
  • A new SVM strategy is designed to provide better efficiency to the traditional inverter while maintaining the advantages of the traditional PWM strategy, which are robustness and low voltage fluctuations; it is worth mentioning that the proposed SVM technique does not have to calculate the sector and the angle, as is done in the traditional SVM technique, resulting in increased simplicity in implementation.
  • The performance of the proposed SVM technique is compared to the traditional PWM strategy and other reference strategies from the literature.

Abstract (1181 Views) | Full-Text (PDF) (509 Downloads)   |   Highlights
  • A new MDs placement is presented for wide-area protection of the power system. This method results in minimum MDs numbers compared with other methods for different standard test systems.
  • The network topology matrix, electrical distances, and communication constraints are considered in the proposed algorithm. Therefore, the optimal protection zones are obtainable for different power systems.
  • The proposed scheme ensures secure and fast wide-area backup protection.

Abstract (1425 Views) | Full-Text (PDF) (1261 Downloads)   |   Highlights
  • A new method for increasing the power added efficiency based on decreasing the power amplifiers’ dissipation power.
  • A new approach for linking MATLAB and ADS for optimizing the power amplifier.

Abstract (1626 Views) | Full-Text (PDF) (1581 Downloads)   |   Highlights
  • Various FACTS controllers are discussed.
  • Optimizing techniques are introduced.
  • Congestion management is included.

Abstract (3809 Views) | Full-Text (PDF) (2089 Downloads)   |   Highlights
  • Several power circuit topologies of the current source inverters, which are an interface between solar panels and the grid, are reviewed.
  • Inverters are compared from the point of some indexes like efficiency, voltage transmission ratio, total harmonic distortion, leakage currents, and their reduction methods.
  • Categorization is for full-bridge inverters and special structures groups. The first group includes the conventional inverter, 4-leg inverter, CH7 CSI, H7 CSI, three-mode, and other structures. The second group consists of inverters with special structures and is independent of the conventional CSI.

Abstract (1394 Views) | Full-Text (PDF) (746 Downloads)   |   Highlights
  • A new method based on the number of setting groups on distance relays has been presented to calculate the the Z2 setting with presence of doubly-fed induction generator (DFIG) based onshore wind farms in power systems.

Abstract (1011 Views) | Full-Text (PDF) (743 Downloads)   |   Highlights
  • A frequency switchable antenna design using genetic algorithms (GAs) for dual band WiMAX (3.5GHz) and WLAN (5.2GHz) applications is proposed;
  • To realize frequency reconfiguration, switches are incorporated into appropriate locations to activate/deactivate corresponding cells;
  • The on/off states of the switches are represented by the presence or absence of conductor, respectively;
  • The proposed approach allows the antenna to operate as mono-band or dual-band radiator according to the desired application.

Abstract (1342 Views) | Full-Text (PDF) (715 Downloads)   |   Highlights
  • A new PMU data-driven mechanism to pinpoint the source of forced oscillations under full resonance;
  • A new multilateral interactive pattern approach derivative from Transient energy function (TEF) results of the multi-generator power system;
  • A new-defined positive weighted undirected graph based on the spectral graph theory, with respect to the eigenvalue spectrum of the normalized Laplacian matrix.

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© 2022 by the authors. Licensee IUST, Tehran, Iran. This is an open access journal distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.