1. Optimal PSS Parameters Design Based on a Novel Objective Function for Small Signal Stability Enhancement

P. Naderi; B. Ehsan Maleki; H. Beiranvand

Volume 9, Issue 1 , Winter and Spring 2021, , Pages 83-92


  Background and Objectives: In this paper, a novel objective function is proposed for designing the power system stabilizers (PSSs). Although the object of the previous designs was to enhance the critical modes' stability, the derived stability indices were, to some extent, low and in some cases not acceptable ...  Read More

2. Coordinated Model Predictive DC-Link Voltage, Current, and Electromagnetic Torque Control of Wind Turbine with DFIG under Grid Faults

Z. Dehghani Arani; S. A. Taher; M. H. Karimi; M. Rahimi

Volume 8, Issue 2 , Summer and Autumn 2020, , Pages 201-218


  Background and Objectives: The wind turbines (WTs) with doubly fed induction generator (DFIG) have active and reactive power as well as electromagnetic torque oscillations, rotor over-current and DC-link over-voltage problems under grid faults. Solutions for these problems presented in articles can be ...  Read More

3. Designing a new robust control for virtual inertia control in the microgrid with regard to virtual damping

F. Amiri; M. Moradi

Volume 8, Issue 1 , Winter and Spring 2020, , Pages 53-70


  Background and Objectives: Virtual inertia control, as a component of a virtual synchronous generator, is used for the implementation of synchronous generator behaviour in microgrids. In microgrids that include high-capacity distributed generation resources, in addition to virtual inertia, virtual damping ...  Read More

4. Frequency and Voltage Control of an Inverter-Based DG Using Adaptive Fuzzy-Sliding Mode Controller

E. Limuchi; A. Taher; B. Ganji

Volume 7, Issue 2 , Summer and Autumn 2019, , Pages 221-230


  Background and Objectives: The microgrid voltage and frequency are strongly affected by active and reactive load fluctuations. Load change in microgrid may result in the lack of balance among generation and consumption and as a result change in output voltage and frequency. If load change is great enough, ...  Read More

5. A Comprehensive Mathematical Model for Analysis of WR-Resolvers under Stator Short Circuit Fault

H. Lasjerdi; Z. Nasiri-Gheidari; F. Tootoonchian

Volume 7, Issue 1 , Winter and Spring 2019, , Pages 11-18


  Background and Objectives: Wound-Rotor resolvers are the most widely used position sensors in applications with harsh environmental conditions. Methods the resolver performance is exposed to failure due to the high risk of short circuit (SC) fault. Although the output current of the resolver is negligible, ...  Read More

6. Voltage Control and Load Sharing in a DC Islanded Microgrid Based on Disturbance Observer

H. Amiri; G. Arab Markadeh; N. Mahdian

Volume 7, Issue 1 , Winter and Spring 2019, , Pages 1-10


  Background and Objectives: Increasing DC loads along with DC nature of distributed energy resources (DERs) raises interest to DC microgrids. Conventional droop/non-droop power-sharing in microgrids suffers from load dependent voltage deviation, slow transient response, and requires the parameters of ...  Read More

7. Hemispherical Vibratory Gyroscope Performance Evaluation and Sensitivity Analysis with Capacitive Excitation

R. Sedaghati; M. Mahmoudian

Volume 7, Issue 1 , Winter and Spring 2019, , Pages 47-58


  Background and Objectives: Coriolis vibratory gyroscope is one of the most modern types of gyroscopes that has been substituted for the common gyroscopes with some differences in the test mass design and elastic suspension. According to the important features observed in the capacitive excitation of ...  Read More

8. Proposed New Conceptual and Economic-Based Flexibility Index in Real-Time Operation Incorporating Wind Farms

H. Berahmandpour; S. M. Kouhsari; H. Rastegar

Volume 7, Issue 1 , Winter and Spring 2019, , Pages 35-45


  Background and Objectives: Uncertainty and variability are two main specifications of wind generation and the ability of the power system to overcome these challenges is called flexibility. The flexibility index is a measure to evaluate the flexibility level of the power system mainly to achieve the ...  Read More

9. Responsive Load Model Integration with SCUC to Design Time-of-Use Program

M. Nikzad; A. Samimi

Volume 6, Issue 2 , Summer and Autumn 2018, , Pages 223-234


  Background and Objectives: Suitable scheming as well as appropriate pricing of demand response (DR) programs are two important issues being encountered by system operators. Assigning proper values could have effects on creating more incentives and raising customers’ participation level as well ...  Read More

10. Analysis of a Linear Induction Motor with Solid Iron Secondary

S.E. Abdollahi; M. Mirzaei

Volume 6, Issue 1 , Winter and Spring 2018, , Pages 77-85


  Background and Objectives: Linear induction motors (LIMs) are widely employed in rail transportation systems due to their robust, simple and low cost structure.  Methods: Several methods have evaluated various topologies' performances in the literature. These methods are more and less effective ...  Read More

11. A Novel Method of FACTS-POD Design to More Enhancement of Inter-Area Mode Damping in a Multi-Machine Power System

B. Ehsan maleki; H. Beiranvand

Volume 6, Issue 1 , Winter and Spring 2018, , Pages 97-109


  Background and Objectives: In this paper, a non-typical design method of flexible AC transmission systems power oscillation damping (FACTS-POD) controller is proposed to increase the efficiency of these devices. In all of the introduced FACTS-POD devices (taking IPFC-POD as an example), the supplementary ...  Read More

12. A Switched Reluctance Motor with Lower Temperature Rise and Acoustic Noise

P. Vahedi; B. Ganji

Volume 6, Issue 1 , Winter and Spring 2018, , Pages 43-52


  Background and Objectives: One of the main drawbacks of switched reluctance motors (SRM) is high acoustic noise and significant research has been done to reduce it. In addition, reduction of temperature rise within the machine is usually considered as one of the most important goals of design. Therefore, ...  Read More