Volume 17, Issue 2 (June 2021)  

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Abstract (390 Views) | Full-Text (PDF) (178 Downloads)   |   Highlights
  • Effective Control of BCDFIG in grid-connected mode.
  • The active and reactive powers are appropriately exchanged with the grid.
  • Model predictive control improves the BCDFIG performance.
  • Achieving better transient response and harmonic performance.


Abstract (309 Views) | Full-Text (PDF) (170 Downloads)   |   Highlights
  • We Use convolutional bottleneck features for robust speech recondition.
  • We analyze the mutual information between input and each layer, and show that bottleneck layer has a high information about network input.
  • We show that convolutional bottleneck network training performance is related to the mutual information of bottleneck features and class labels.


Abstract (544 Views) | Full-Text (PDF) (239 Downloads)   |   Highlights
  • This paper proposes a new single-to-three phase converter that is based on a special type of rotating magnetic field transformers.
  • In the proposed system, a switching technique is also introduced to obtain nearly a two-phase voltage.
  • The results confirm the validity of the proposed converter and also THD reduction in comparison to the conventional converter.


Abstract (527 Views) | Full-Text (PDF) (197 Downloads)   |   Highlights
  • Proposing a novel method base on load angle for direct control of active power and stator flux of PMSG-based wind turbine.
  • Control of active power and stator flux by the proposed discrete-time algorithm.
  • Higher dynamic response due to the elimination of inner current control loops and no need to coordinate system transformation blocks as well as the PI controllers and their adjustment.
  • No need to permanent magnet flux vector and several machine parameters such as stator inductances which can improve the robustness of the control system.


Abstract (494 Views) | Full-Text (PDF) (177 Downloads)   |   Highlights
  • An analytical model has been presented to determine optimal iron pole shape in STPM machine considering magnet width as well as the iron core relative permeability.
  • The proposed model is obtained by solving the Maxwell equations by considering the appropriate boundary conditions in the Cartesian pseudo-coordinate system.


Abstract (290 Views) | Full-Text (PDF) (140 Downloads)   |   Highlights
  • In this work, three different antenna arrays are designed and fabricated to generate three OAM modes [mode 0, mode +1, and mode -1]. The fabricated OAM antenna is compact related to other uniform circular array OAM antenna. The purity of OAM pattern of each mode is also improved to some extent by using of radial orientation array elements.
  • Apart from successfully generated the OAM beam, the effect of dimensional parameters like antenna array radius (R) and  number of antenna element (N), on directivity pattern and vortex null-width is also analyzed and results have been shown.
  • The effect of increasing OAM mode (l = 0 to +4) on the vortex null-width and in absolute directivity is also analyzed and results have been shown.
  • The OAM phase for mode 0 to 4 is simulated to study the effect on the purity of OAM phase pattern and maximum possible OAM modes are observed.
  • All these results are compared with two other similar kinds of works.


Abstract (531 Views) | Full-Text (PDF) (212 Downloads)   |   Highlights
  • High voltage conversion ratio in both step-up and step-down modes;
  • Existence of zero voltage switching (ZVS) for the power diode, which decrease the regenerative diode reverse;
  • Lower peak voltage through the semiconductors;
  • Low size, volume, and cost.


Abstract (528 Views) | Full-Text (PDF) (193 Downloads)   |   Highlights
  • The Major contribution of the work includes the design of GD-QFB OTA and its uses in GD-QFB MOS based Gm-C filter. GD-QFB MOS technique is a good low power design technique.
  • In this paper, GD-QFB MOS differential input two-stage OTA has been presented. The simulation results show the significant improvement in DC gain, CMRR, and reduction in the power consumption of OTA.
  • Further, the proposed OTA is used in the design of the tunable Gm-C filter for low power PLL applications in the range of 1-3 GHz.


Abstract (453 Views) | Full-Text (PDF) (175 Downloads)   |   Highlights
  • Developing an advanced distribution automation planning approach in which the emergency-based demand response programs are supposed to be employed in the service restoration process.
  • Comprehensive modeling of the emergency-based demand response programs through considering the restrictions, and behavior of customers in participating in the service restoration process.



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© 2021 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.