Research Articles Power systems
A New Whale Optimization Algorithm Based Fault Location Method by Focusing on Dispersed Model of the Transmission Line

Navid Ghaffarzadeh; Hossein Faramarzi

Volume 3, Issue 4 , September 2020, Pages 393-406

https://doi.org/10.22111/ieco.2020.32027.1218

Abstract
  In this paper, a fault location approach is presented by using Whale Optimization Algorithm (WOA) strategy in two terminal transmission feeder. Also, Grey wolf Optimization (GWO) method is discussed. From both ends, affording the preparatory data for proposed strategies voltages and currents from both ...  Read More

Research Articles Control
A Semi-Analytic Method for Solving a Class of Non-Linear Optimal Control Problems

Maryam Alipour; Pooneh Omidiniya

Volume 3, Issue 4 , September 2020, Pages 415-429

https://doi.org/10.22111/ieco.2020.32367.1225

Abstract
  This paper, proposes an approximate analytical method to solvea class of optimal control problems. This method is an enhancementof the variational iteration method (VIM) which is called modifi ed variational iteration method (MVIM) and eliminates all additional calculations in VIM, thus requires less ...  Read More

Research Articles Optimization
Application of Improved Salp Swarm Algorithm Based on MPPT for PV Systems under Partial Shading Conditions

Javad Farzaneh; Ali Karsaz

Volume 3, Issue 4 , September 2020, Pages 407-414

https://doi.org/10.22111/ieco.2020.31320.1200

Abstract
  Maximum Power Point Tracking (MPPT) is an important concept for both uniform solar irradiance and Partial Shading Conditions (PSCs). The paper presents an Improved Salp Swarm Algorithm (ISSA) for MPPT under PSCs. The proposed method benefits a fast convergence speed in tracking the Maximum Power Point ...  Read More

Research Articles Control
Model-Free Tracking Control via Adaptive Dynamic Sliding Mode Control With Application to Robotic Systems

Mohammad Reza Shokoohinia; Mohammad Mehdi Fateh

Volume 3, Issue 4 , September 2020, Pages 431-438

https://doi.org/10.22111/ieco.2020.31596.1207

Abstract
  In this paper, a novel model-free control scheme is developed to enhance the tracking performance of robotic systems based on an adaptive dynamic sliding mode control and voltage control strategy. In the voltage control strategy, actuator dynamics have not been excluded. In other words, instead of the ...  Read More

Research Articles Industrial Electronics
Quantization Noise Reduction Using Random Dither in Direct Torque Control of an Induction Motor

Asghar Taheri; Amir Ghasemian

Volume 3, Issue 4 , September 2020, Pages 439-445

https://doi.org/10.22111/ieco.2020.32128.1223

Abstract
  A direct torque control (DTC) controlled induction motor drive is presented in this paper. Quantization errors of current and voltage measurements are simulated and considered. To reduce the average quantization error and other offset errors of current and voltage measurement and eliminating the increasing ...  Read More

Research Articles Power systems
A Novel Complete Dynamic and Static Model of 48-Pulse VSC-based GUPFC for Parallel Transmission Lines

Mahyar Abasi; Mahmood Joorabian; Alireza Saffarian; Seyyed Ghodratollah Seifossadat

Volume 3, Issue 4 , September 2020, Pages 447-457

https://doi.org/10.22111/ieco.2020.32548.1227

Abstract
  Generalized Unified Power Flow Controller (GUPFC) is a member of the flexible alternating current transmission system (FACTS) devices family that operates based on voltage source converter (VSC) and is known as the most efficient FACTs device. GUPFC can control the voltage of one bus and the active and ...  Read More

Research Articles Control
Improving Quality of Movement in a Linear Switched Reluctance Motor Using a Fuzzy Logic System

Allahverdi Azadrou; Siamak Masoudi; Reza Ghanizadeh; Payam Alemi

Volume 3, Issue 4 , September 2020, Pages 459-468

https://doi.org/10.22111/ieco.2020.32897.1238

Abstract
  This work deals with minimizing fluctuations of propulsion force and improving the motion quality in a linear switched reluctance motor. In order to minimize the jerks in the moving part of the motor, a new profile has been used to generate an appropriate reference speed profile. The results indicate ...  Read More

Research Articles Optimization
Solving Economic Load Dispatch by a New Hybrid Optimization Method

Hossein Sharifzadeh

Volume 3, Issue 4 , September 2020, Pages 469-474

https://doi.org/10.22111/ieco.2020.32914.1239

Abstract
  This paper presents a new solution method to efficiently handle non-convexity stemmed from valve points in the economic load dispatch problem. The proposed solution technique integrates both the advantage of fast solution algorithms of linear programming and powerful solution techniques of nonlinear ...  Read More

Research Articles Control
The Novel Stability Criteria for Piecewise Affine Systems with Time-Varying Delay

Salehe Afsharian; Hussein Eliasi

Volume 3, Issue 4 , September 2020, Pages 475-482

https://doi.org/10.22111/ieco.2020.32932.1240

Abstract
  This article aims to derive new sufficient conditions to guarantee the stability of piecewise affine systems with time-varying delay (PWA-TVD). The set of delay-dependent linear matrix inequality (LMI) describes the novel stability criteria. This approach considers the PWA-TVD system with a time-delayed ...  Read More

Research Articles Control
Optimal Impedance Voltage-Controller for Electrically Driven Robots

Mohsen Jalaeian-F; Mohammad Mehdi Fateh; Morteza Rahimiyan

Volume 3, Issue 4 , September 2020, Pages 483-490

https://doi.org/10.22111/ieco.2020.33183.1247

Abstract
  This paper presents a novel optimal impedance voltage-controller for Electrically Driven Lower Limb Rehabilitation Robots (EDLR). To overcome the dynamical complexities, and handle the uncertainties, the proposed method employs an expected forward model of the actuator. The difference between this model’s ...  Read More

Research Articles Industrial Electronics
Linear Modelling of Six Pulse Rectifier and Designee of Model Predictive Controller with Stability Analysis

Hamid Radmanesh; Masood Saeidi

Volume 3, Issue 4 , September 2020, Pages 491-501

https://doi.org/10.22111/ieco.2020.33560.1253

Abstract
  The AC/DC converter is one of the popular power electronic converters in industrial applications such as in the railway, power supply systems and electric vehicle. In this paper, a three-phase controllable rectifier is considered and its linear model is extracted. Because of MPC controllers benefits, ...  Read More

Research Articles Control
Robust Congestion Control Using Sliding Mode Control In TCP/IP Computer Networks

Shoorangiz Shams Shamsabad Farahani; Narges Masoomabadi; Mohammad Reza Jahed-Motlagh

Volume 3, Issue 4 , September 2020, Pages 503-510

https://doi.org/10.22111/ieco.2020.33484.1250

Abstract
  Based on the recent Internet advances, congestion control is considered as an important issue and has spurred a significant amount of research. In this study, second-order sliding mode control is used to adjust the average queue length and maintain the closed-loop system performance. The control law ...  Read More