Print ISSN: 1814-5892

Online ISSN: 2078-6069

Volume 11, Issue 2

Volume 11, Issue 2, Summer and Autumn 2015, Page 151-207


Quarter Car Active Suspension System Control Using PID Controller tuned by PSO

Wissam H. Al-Mutar

Iraqi Journal for Electrical And Electronic Engineering, Volume 11, Issue 2, Pages 151-158
DOI: 10.33762/eeej.2015.106236

The objective of this paper is to design an efficient control scheme for car suspension system. The purpose of suspension system in vehicles is to get more comfortable riding and good handling with road vibrations. A nonlinear hydraulic actuator is connected to passive suspension system in parallel with damper. The Particles Swarm Optimization is used to tune a PID controller for active suspension system. The designed controller is applied for quarter car suspension system and result is compared with passive suspension system model and input road profile. Simulation results show good performance for the designed controller

Pro-active Selfhealing – An Extension concept in SmartGrid

Noman Nisar

Iraqi Journal for Electrical And Electronic Engineering, Volume 11, Issue 2, Pages 159-164
DOI: 10.33762/eeej.2015.106237

The reliability of power system under fault susceptible environment has become major challenge for the power sector units. The injection of renewable power source has increased the complexity for distribution system and to deal with massive network, evolution of smart-grid has been enforced, which works in an automated fashion to improve overall reliability, efficiency and quality of the system. Proactive Self-healing is a critical feature of smart-grid. This paper tries to explain the concept sensing the occurrence of fault beforehand and providing possible solution for self-healing in smart grid. The fundamental base for incorporating afore discussed technology viz. understanding nature of fault, sources of fault and implementation of effective measuring techniques are enumerated in paper briefly. Support required in terms of technology is reviewed towards the end followed by a case study of practical implementation of self-healing control in a distribution system.

Design and Implementation Model for Linearization Sensor Characteristic by FPAA

Alaa Abdul Hussein Salman; Fadhil Rahma Tahir; Mofeed Turky Rashid

Iraqi Journal for Electrical And Electronic Engineering, Volume 11, Issue 2, Pages 165-173
DOI: 10.33762/eeej.2015.106238

Linearization sensors characteristics becomes very interest field for researchers due to the importance in enhance the system performance, measurement accuracy, system design simplicity (hardware and software), reduce system cost, ..etc. in this paper, two approaches has been introduced in order to linearize the sensor characteristics; first is signal condition circuit based on lock up table (LUT) which this method performed for linearize NTC sensor characteristic. Second is ratiometric measurement equation which this method performed for linearize LVDT sensor characteristic. The proposed methods has been simulated by MATLAB, and then implemented by using Anadigm AN221E04 Field Programmable Analog Array (FPAA) development kit which several experiments performed in order to improve the performance of these approaches.

Fuzzy Transmission Power Control Scheme for Maximizing Lifetime in Wireless Sensor Networks

Safaa Khudair Leabi; Turki Younis Abdalla

Iraqi Journal for Electrical And Electronic Engineering, Volume 11, Issue 2, Pages 174-182
DOI: 10.33762/eeej.2015.106239

Energy limitations have become fundamental challenge for designing WSNs. Network lifetime is the most interested and important metric in WSNs. Many works have been developed for prolonging networks lifetime, in which one of the important work is the control of transmission power. This paper proposes a new fuzzy transmission power control technique that operate together with routing protocols for prolonging WSNs lifetime. Dijkstra shortest path routing is considered as the main routing protocol in this work. This paper mainly focuses on transmission power control scheme for prolonging WSNs lifetime. A performance comparison is depicted for maximum and controlled transmission power. Simulation results show an increase in network lifetime equals to 3.4776 for the proposed fuzzy control. The performance of the proposed fuzzy control technique involves a good improvement and contribution in the field of prolonging networks lifetime by using transmission power control.

PID Controller Based Multiple (Master/Slaves) Permanent Magnet Synchronous Motors Speed Control

Suroor M. Dawood; Samar H. Majeed; Habeeb J. Nekad

Iraqi Journal for Electrical And Electronic Engineering, Volume 11, Issue 2, Pages 183-192
DOI: 10.33762/eeej.2015.106240

This paper suggests the use of the traditional proportional-integral-derivative (PID) controller to control the
speed of multi Permanent Magnet Synchronous Motors (PMSMs). The PMSMs are commonly used in industrial
applications due to their high steady state torque, high power, high efficiency, low inertia and simple control of their
drives compared to the other motors drives. In the present study a mathematical model of three phase four poles
PMSM is given and simulated. The closed loop speed control for this type of motors with voltage source inverter and
abc to dq blocks are designed. The multi (Master/Slaves approach) method is proposed for PMSMs. Mathwork's
Matlab/Simulink software package is selected to implement this model. The simulation results have illustrated that
this control method can control the multi PMSMs successfully and give better performance.

Different Techniques for Calculating Apparent and Incremental Inductances using Finite Element Method

Amer Mejbel Ali

Iraqi Journal for Electrical And Electronic Engineering, Volume 11, Issue 2, Pages 193-201
DOI: 10.33762/eeej.2015.106241

This work focuses on using two-dimensional finite element method to calculate apparent and incremental inductances for 40W fluorescent lamp ballast with different loading conditions based on its design documents. Seven inductance calculation techniques are adopted by calculating ballast stored magnetic energy and flux linkage using ANSYS software. The calculated results for apparent inductances show a good agreement with the design and average measured values, while calculated incremental inductances have been verified by noting the behavior of core hysteresis loop experimentally. These seven techniques establish a good base for researchers and designers to obtain an accurate inductance profile for any iron-core inductor.

Modified ECMP Routing Using Adapted Cost Disjoint Multiple Paths ACDMP

Abbas A. Jasim

Iraqi Journal for Electrical And Electronic Engineering, Volume 11, Issue 2, Pages 202-207
DOI: 10.33762/eeej.2015.106242

Computer network routing is performed based on routing protocol decisions. Open Shortest Path First OSPF is the most known routing protocol. It suffers from congestion problem since it generally uses single (least cost) path to deliver information. Some times OSPF delivers information using more than one path in the case of more than one path have the same cost value. This condition is rarely achieved in normal cases. In this work OSPF is developed to distribute information load across multiple paths and makes load distribution as general case for the routing protocol. The modification supposes no protocol replacement and uses the existing protocol facilities. This makes faster information delivery, load balancing, less congestion, and with little modification on the built in OSPF functions. Disjoint paths are calculated then the costs of the best set of them are adapted using approporate ratio.