Power systems
An Adaptive Control Method Based on Interval Fuzzy Sliding Mode for Direct Matrix Converters

Mehdi Bekrani; Mojtaba Heydari; Seyedeh Tahereh Behrooz

Volume 3, Issue 2 , May 2020, , Pages 159-171

https://doi.org/10.22111/ieco.2019.30815.1191

Abstract
  In this paper, a new adaptive control method is proposed for direct matrix converters. The proposed method uses interval type-2 fuzzy logic integrated with sliding mode control. Employing the sliding mode control in matrix converters leads to an efficient choice of switching combinations and a reliable ...  Read More

Power systems
Portable Power Generation System: Axial Flux PM Generator Design

Reza Yazdanpanah

Volume 3, Issue 1 , January 2020, , Pages 11-18

https://doi.org/10.22111/ieco.2019.27719.1112

Abstract
  Design methodology of the compact size charging system for emergency uses is investigated in this paper. The system consists of a gearing unit, generator, charger and battery cells. The system electrical model has been introduced and a 3-phase axial flux surface mounted PM generator with concentrated ...  Read More

Power systems
A Novel Method for Optimal Control of Piecewise Affine Systems Using Semi-Definite Programming

Majid Akbarian; Najmeh Eghbal; Naser Pariz

Volume 3, Issue 1 , January 2020, , Pages 59-68

https://doi.org/10.22111/ieco.2019.26629.1082

Abstract
  : In this paper, a novel optimal control design method by discontinuous quadratic Lyapunov function and continuous quadratic Lyapunov function for 2-dimensional piecewise affine systems via semi-definite programming and LMI constraints is proposed.In fact, for designing optimal control we use from two ...  Read More

Power systems
The Effect of Different Representations of Wind Turbines on the SSR Analysis in the Double Cage Induction Generator Based Wind Farm

Roholamin Zeinali; MohamadKazem Salehi

Volume 3, Issue 1 , January 2020, , Pages 69-80

https://doi.org/10.22111/ieco.2019.27723.1114

Abstract
  In this paper different representations of a wind farm based on double-cage induction generators connected to a series-compensated line is studied and their effect on the Subsynchronous Resonance (SSR) is analyzed. For this purpose, three representation types of wind turbines in SSR studies of the wind ...  Read More

Power systems
Allocation of Fault Current Limiters in Power Systems Considering Fault Current, Cost, and Lost Power Indices Using Imperialist Competitive Algorithm

Shervin Bikdeli; Mohammad Farshad

Volume 3, Issue 1 , January 2020, , Pages 91-102

https://doi.org/10.22111/ieco.2019.29329.1154

Abstract
  Developments in power systems like the installation of new generation resources and interconnections may increase short-circuit current levels and consequently, impose additional costs of replacing circuit breakers and equipment. In these cases, one of the best methods to reduce short-circuit currents ...  Read More

Power systems
Microgrid optimal scheduling considering normal and emergency operation

Ali Sefidgar-dezfouli; Mahmood Joorabian; Elaheh Mashhour

Volume 2, Issue 4 , October 2019, , Pages 279-288

https://doi.org/10.22111/ieco.2019.27484.1100

Abstract
  This paper deals with the optimal scheduling of a microgrid (MG) equipped with dispatchable distributed generators (DGs), renewable generators and electrical storages (batteries). A chance-constrained model is developed to handle normal operation and emergency conditions of MG including DG outage and ...  Read More

Power systems
Investigating Reliability of Smart Electrical Grids Considering Self-healing in Presence of Distributed Generation Resources

Sanaz Ghanbari; Hamdi Abdi

Volume 2, Issue 4 , October 2019, , Pages 343-354

https://doi.org/10.22111/ieco.2019.27966.1119

Abstract
  The advent of DG and SEGs has led to fundamental changes in various fields of power system operation. The current paper is aimed to investigate the reliability of SEGs considering DGRs based on the self-healing concept. Due to the emergence of new uncertainties in the power system resulted from the presence ...  Read More

Power systems
Robust hybrid control of output power for three-phase grid connected PV system

Seyed Mohammad Hoseini; Nastaran Vasegh; Ali Zangeneh

Volume 2, Issue 4 , October 2019, , Pages 365-372

https://doi.org/10.22111/ieco.2019.26726.1091

Abstract
  In this paper, a new robust hybrid controller (RHC) is proposed to regulate current, voltage and, as a result, power output of a three-phase grid connected PV system. The creative process of the proposed controller consists of two steps. First, an input-output linearization method is used to eliminate ...  Read More

Power systems
The Effect of Condition Monitoring of Circuit Breaker on the Reliability and Maintenance Cost of Substation

Ali Karimabadi; Mohammad Ebrahim Hajiabadi; Ebadollah Kamyab; Ali Asghar Shojaei

Volume 2, Issue 3 , July 2019, , Pages 167-176

https://doi.org/10.22111/ieco.2019.27957.1118

Abstract
  Over the recent years, a number of new maintenances methods for high voltage substations have been introduced to reduce the number of substation events. The primary purpose of the present study is to presents a Cost-benefit analysis for Circuit-Breakers (CBS) in a substation equipped with Condition Monitoring ...  Read More

Power systems
Microgrid frequency control using the virtual inertia and ANFIS-based Controller

Akbar Karimipouya; Shahram Karimi; Hamdi Abdi

Volume 2, Issue 2 , April 2019, , Pages 145-154

https://doi.org/10.22111/ieco.2018.26293.1071

Abstract
  the main challenge in associate islanded Micro grid (MG) is the frequency stability due to the inherent low-inertia feature of distributed energy resources. That is why, energy storage devices, are utilized in MGs as the promising sources for grid short-term frequency regulation. Though energy storage ...  Read More

Power systems
Improvement of direct power control of DG-Interfaced grid connected Power Converter

Ehsan Talebian Kouchaksaraei; Mehrdad Ahmadi Kamarposhti

Volume 2, Issue 1 , January 2019, , Pages 7-16

https://doi.org/10.22111/ieco.2018.25131.1039

Abstract
  Limitation of fossil fuel reserves and environmental pollution resulting from their use, especially in cities, as well as low efficiency of current energy converters lead to the tendency towards the use of more efficient energy converters and renewable energy sources. The use of distributed generation ...  Read More

Power systems
A New Sliding Mode-based Power Sharing Control Method for Multiple Energy Sources in the Microgrid under Different Conditions

Reza Sedaghati; Mahmoud Reza Shakarami

Volume 2, Issue 1 , January 2019, , Pages 25-38

https://doi.org/10.22111/ieco.2018.24333.1019

Abstract
  A single-phase distributed generation (DG) sources embedded in three-phase microgrids develop with a fast-paced trend, it is important to make use of suitable power sharing strategies among multiple DGs and utilizing the power generation of these units to the full capacity. This paper presents an innovative ...  Read More

Power systems
Optimal power quality meters placement with consideration of single line and meter loss contingencies

mohammadreza sheibani; abbas ketabi; mostafa nosratabadi

Volume 1, Issue 2 , September 2018, , Pages 81-89

https://doi.org/10.22111/ieco.2018.25226.1043

Abstract
  Harmonic state estimation (HSE) is the process of assigning a value to an unknown system state harmonic variable based on measurements from that system according to some criteria. Determining the best harmonic meters places in the system helps to increase the accuracy of the HSE. In this paper, a methodology ...  Read More

Power systems
Performance Analysis of Permanent Magnet Vernier Generator under Mechanical Faults

Zahra Nasiri-Gheidari; Mehrage Ghods; Hashem Oraee

Volume 1, Issue 2 , September 2018, , Pages 121-131

https://doi.org/10.22111/ieco.2018.25203.1041

Abstract
  In this paper no-load and full-load performance of Permanent Magnet Vernier Generators (PMVGs) is investigated in fully-aligned condition and under different types of mechanical faults. The studied mechanical faults are Static Eccentricity (SE), Dynamic Eccentricity (DE), Inclined Rotor (IR), and Run-out ...  Read More

Power systems
Designing an Optimal Linear Bid Function in a Pay-as-Bid Electricity Market

Javid Khorasani; Ehsan Monabbati; Habib Rajabi Mashhadi

Volume 1, Issue 2 , September 2018, , Pages 133-142

https://doi.org/10.22111/ieco.2018.24410.1025

Abstract
  In this paper, the bidding problem in electricity markets is formulated from the viewpoint of a generation company. With focus on Iran's electricity market structure, the objective is to design an optimal linear bid function considering pay-as-bid pricing mechanism. The market clearing price is considered ...  Read More

Power systems
A Detailed Study for Load Flow Analysis in Distributed Power System

Mohammad Ghiasi

Volume 1, Issue 2 , September 2018, , Pages 153-160

https://doi.org/10.22111/ieco.2018.24423.1027

Abstract
  Load flow (LF) is one of the most important parts to study and analyze power system operation. In this research paper, a detailed study for load flow analysis in distributed power system (DPS) is presented. A case study of modeling and simulation of the actual power distribution network is implemented ...  Read More

Power systems
Risk-Averse Pre-Extreme Weather Events Self-Scheduling of a Wind Power Plant: A Hybrid Possibilistic-Scenario Model

Hooman Khaloie; Amir Abdollahi; Masoud Rashidinejad

Volume 1, Issue 1 , June 2018, , Pages 9-18

https://doi.org/10.22111/ieco.2018.24149.1010

Abstract
  This paper develops a new possibilistic-scenario model for a wind power plant to determine its optimal self-scheduling (SS) in the presence of high-impact low-probability events uncertainty. Nowadays, in the context of the power system, examining the effects of extreme weather events in the category ...  Read More

Power systems
Optimal Planning of Energy Storage Systems using Symbiotic Organisms Search Algorithm

Reza Safipour; Mahmoud Oukati Sadegh

Volume 1, Issue 1 , June 2018, , Pages 19-26

https://doi.org/10.22111/ieco.2018.23950.1004

Abstract
  Energy storage systems, along with many capabilities in the grid, are costly technologies. Therefore, their economic issues should be also considered while they are used in the grid. In this paper, a method has been proposed that can be used to determine the location, power, and capacity of the energy ...  Read More

Power systems
Optimal allocation and sizing of dynamic VAR support to improve short-term voltage stability considering wind farm and dynamic load model

Parnian Fakhrooeian; mehrdad Abedi; peyman karimyan

Volume 1, Issue 1 , June 2018, , Pages 41-51

https://doi.org/10.22111/ieco.2018.24388.1024

Abstract
  Nowadays short-term voltage instability is a major threat for power system reliability and stability owing to the increasing proportion of renewable energy sources such as solar and wind power, induction motor loads, HVDC links and etc. The aim of this paper is to determine the optimal location and size ...  Read More

Power systems
Optimal Control of Islanded Micro grid Using Particle Swarm Optimization Algorithm

Mehrdad Ahmadi Kamarposhti

Volume 1, Issue 1 , June 2018, , Pages 53-60

https://doi.org/10.22111/ieco.2018.24354.1022

Abstract
  Microgrid is defined as a controllable unit which consists of Distributed Generations (DG), loads, energy storages and control devices. Microgrid has two operation modes including grid connected mode and islanding mode. In grid connected mode, voltage and frequency of microgrid is controlled by main ...  Read More