CHIEF ELECTRICIAN
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Haitham Khader is a chief electrical engineer with over 10 years of experience maintaining electrical equipment on oil rigs. He has a bachelor's degree in electrical power and machines engineering from Tanta University in Egypt. As an electrician and now senior electrician for the Egyptian Drilling Company, he is responsible for the daily maintenance and repair of equipment such as top drives, generators, switchgear, and programmable logic controllers. He also trains junior electricians and ensures maintenance procedures are properly completed.
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Mudather Adel YakootAbuhashish is an electrical engineer from Port Said, Egypt with over 10 years of experience maintaining electrical systems. He currently works as an electrical engineer for SCCT Maersk group in Egypt, where his responsibilities include maintenance of motors, PLCs, drives, engines, and implementing electrical projects. Previously he worked as an electrical engineer for E.D.C. Maersk group in Egypt, maintaining generators, rig instrumentation, and communications devices on drilling rigs. He holds a B.Sc. in Electrical and Computers Engineering.
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Mudather Adel YakootAbuhashish is an electrical engineer from Port Said, Egypt with over 10 years of experience maintaining electrical systems. He currently works as an electrical engineer for SCCT Maersk group in Egypt, where his responsibilities include maintenance of motors, PLCs, drives, engines, and implementing electrical projects. Previously he worked as an electrical engineer for E.D.C. Maersk group in Egypt, maintaining generators, rig instrumentation, and communications devices on drilling rigs. He holds a B.Sc. in Electrical and Computers Engineering.
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Due to advantages such as fast dynamic response, simple and robust control structure, direct torque
control (DTC) is commonly used method in high performance control method for induction motors. Despite
mentioned advantages, there are some chronically disadvantages with this method like high torque and
current ripples, variable switching behaviour and control problems at low speed rates. On the other hand,
artificial neural network (ANN) based control algorithms are getting increasingly popular in recent years
due to their positive contribution to the system performance. The purpose of this paper is investigating of
the effects of ANN integrated DTC method on induction motor performance by numerical simulations. For
this purpose, two different ANN models have been designed, trained and implemented for the same DTC
model. The first ANN model was designed to select optimum inverter and the second model was designed to
use in the determination of the flux vector position. Matlab/Simulink model of the proposed ANN based
DTC method was created in order to compare with the conventional DTC and the proposed DTC methods.
The simulation studies proved that the induction motor torque ripples have been reduced remarkably with
the proposed method and this approach can be a good alternative to the conventional DTC method for
induction motor control.
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2) Computer simulations of the machine model and control system were performed and matched well with experimental tests, validating the machine's behavior under this control approach.
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Induction motor is rotating type of electro-mechanical device. Induction motor convert electrical energy into mechanical energy. Induction motor is highly reliable, require less maintenance and have high efficiency. Induction motor are wide in range of operation and it used in many application because its construction is simple and robust. In past induction motor can be protected by manual operation of component such as timer, contactor, electromagnetic switch, voltage and current transformer. Protection of an induction motor against problem such as short circuit, temperature rise, single phasing and motor vibration occurring in the operation is very important. Manual operation of protection system are very slow and is not accurate. Looking to this issues, in this paper PLC based protection method is used. Which operated automatically, provide higher accuracy and quick response.
SPEED AND TORQUE CONTROL OF AN INDUCTION MOTOR WITH ANN BASED DTC
Due to advantages such as fast dynamic response, simple and robust control structure, direct torque
control (DTC) is commonly used method in high performance control method for induction motors. Despite
mentioned advantages, there are some chronically disadvantages with this method like high torque and
current ripples, variable switching behaviour and control problems at low speed rates. On the other hand,
artificial neural network (ANN) based control algorithms are getting increasingly popular in recent years
due to their positive contribution to the system performance. The purpose of this paper is investigating of
the effects of ANN integrated DTC method on induction motor performance by numerical simulations. For
this purpose, two different ANN models have been designed, trained and implemented for the same DTC
model. The first ANN model was designed to select optimum inverter and the second model was designed to
use in the determination of the flux vector position. Matlab/Simulink model of the proposed ANN based
DTC method was created in order to compare with the conventional DTC and the proposed DTC methods.
The simulation studies proved that the induction motor torque ripples have been reduced remarkably with
the proposed method and this approach can be a good alternative to the conventional DTC method for
induction motor control.
Autotuning for dcs800
1. The document discusses how to perform autotuning for DC motors driven by a DCS800 controller. Autotuning can be done for the field current controller, armature current controller, and speed controller.
2. For autotuning the armature current controller, some interlocks must first be addressed including ensuring the main breaker is closed, the motor is uncoupled from equipment, and lubrication/hydraulic units for the equipment are running.
3. The procedure for autotuning the armature current controller involves switching the drive to local mode, setting a parameter to initiate armature current autotuning, activating an icon to open the shear breaker, and allowing the motor speed to reach base speed
Sliding Mode Observers-based Fault Detection and Isolation for Wind Turbine-d...
Sliding Mode Observers-based Fault Detection and Isolation for Wind Turbine-d...International Journal of Power Electronics and Drive Systems
Inter-turn short-circuit (ITSC) faults on the induction machine has received much attention in the recent years. Early detection of such faults in wind turbine systems would allow to avoid fluctuation on wind power output and maintain the reliability level. In this paper, Sliding Mode Observers (SMO)-based fault detection and isolation method is developed for induction generator (IG)-based variable-speed grid-connected wind turbines. Firstly, the dynamic model of the wind turbine and IG was given and then, the control was made based on Maximum Power Point Tracking (MPPT) method. The IG closed-loop via Indirect Rotor Flux Oriented Control (IRFOC) scheme was also described. Hence, the performance of the wind turbine system and the stability of injected power to the grid were analyzed under the ITSC fault conditions. The control schemes were proved to be inherently unstable under the faulty conditions. Then, robust SMO were investigated to design an ITSC fault detection and isolation scheme. Finally, simulation results of ITSC detection and isolation in the variable-speed grid-connected wind turbine with affected IG confirm the theoretical development.Fly By Wire
This document describes a student project to design and fabricate a fly-by-wire system for flight control using an ATmega8 microcontroller and three servo motors. The system takes input from pilot controls like the steering column and foot pedals and sends electronic signals to actuators controlling the flight surfaces. The students' prototype controls the yaw, pitch, and roll of a model aircraft using push switches and servo motors attached to wooden wings to simulate flight control surfaces like elevators and rudders. Simulation and testing confirmed the system could control the servos to rotate between -30 and +30 degrees based on input signals.
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La prevención y el tratamiento precoz son las principales estrategias para combatir la caries y asegurar una salud dental en la infancia. Viewers also liked (12)
Motivo de consulta y prevalencia de la caries grave de la primera infancia en...
Motivo de consulta y prevalencia de la caries grave de la primera infancia en...
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- 1. CONTACT HAITHAM KHADER CHIEF ELECTRICAL ENGINEER 00201288322372 00201220035443 0020403501541 0020403407689 Enghaithampower2008@gmail. com EDUCATION COURSES Tanta University 2001-2006 Bachelor's degree in the engineering of Electrical Power & Machines (GOOD) Egyptian Drilling Company Night electrician from 2008-2010; Senior electrician from 2010-till now Responsible for the daily and periodical maintenance processes of all electrical equipment on onshore super rigs (AC, DC Rig) such as: Top drive (VARCO TDS -11SA) with Omron VFD Top drive National Oil well PS-500 Engine generator set Caterpillar 3512B, 3406,399 SCR: NOV, Rosshill, IDM VFD: Omron yaskawa Air compressor, M.C.C "Motor Control Center", AC- motor, DC-motor, control circuit,, switchgear, DAQ" Data Acquisition" ,VFD , PLC . perform the direct charge requisitions for the required spare parts Coordinate and supervise the electrical PM System. Train junior electrician how to maintain and repair all the rig electrical equipment. Ensure that all the planned maintenance has been accurately completed 2008-till now Advanced AC Generator . Advanced SCR . Plc course for simatic s7 family service training in Siemens head office. Lifting and working at heights. H2s practical. Stop for safety employee level. Safety management system. Stop for safety supervisor level. EXPERIENCE ABOUT ME I have the ability to analyze complex engineering problems, evaluate and recommend alternatives and communicate recommendations effectively having a comprehensive understanding of electrical health and safety regulations Able to make fast and reliable decisions about how to solve problems Interested with the Information Technology Culture with learning new Technologies to be synchronized with the work requirements. Having excellent communication skills that make me good in management work and also working in team work.