Majeed Ismael Mohammed

Year: 2023

Academic Degree: Master

Supervisor Type: Supervisor

Supervisor State: Graduated

“Design and Implementation of a Solar Panel Data Monitoring System based on PLC S7-1200”, Technical Engineering College/Mosul, Northern Technical University, 2023.

Kutaiba Khalaf Khaleel

Year: 2022

Academic Degree: Master

Supervisor Type: Co-supervisor

Supervisor State: Graduated

Design and Implementation of a Smart Online Monitoring System for Photovoltaic Panels Tikrit University College of Engineering Electrical Engineering Department

M.Sc.

Apr 28, 2025 - Jun 20, 2010

MSc. in Electrical Power Technology Engineering (Technical Master), June 2010, Technical College / Mosul / Iraq. Title of M.Sc. Thesis: "FPGA-Based Three-Phase Sinusoidal PWM Control for Voltage Source Inverter-Fed IM."

Compression of Multiple Modulation Techniques for Various Topologies of Multilevel Converters for Single Phase AC Motor Drive

Jun 1, 2019

Journal International Journal of Power Electronics and Drive Systems

DOI http://doi.org/10.11591/ijpeds.v10.i2.pp662-671

Issue 2

Volume 19

There are various types of Multilevel Converters (MCs) in addition to various types of modulation techniques for these types of MCs; the challenges in selecting the best one of them with regard to the amount of the required of components, and its harmonics content. So, a comparison study among these types has been done in this paper. For comparison study, the simulation of seven level of two popular topologies of MCs: Neutral Point Clamped (NPC) converter, and Cascaded-MCs were carried out with Matlab/Simulink software program. These converters are used to drive a single phase capacitor start motor drive. Multicarrier modulation control techniques are used for controlling the MCs; these techniques involve two main type: Level Shifted Carrier (LSC), and Phase Shifted Carrier (PSC). The comparison is made with respect to the performance factors as, the amplitude of the Total Harmonic Distortion (THD), and the DC-bus utilization performance which measured by Root Mean Square of the output voltage Vrms at variable modulation indices and variable carrier frequency. Based on simulation results it's found, that the cascaded-MC with PSC modulation method gives best results, in addition to the Alternative Phase Opposition Disposition APOD-LSC modulation technique (with even number of modulation frequency) generate the output voltage with a lower harmonic content compared with the other techniques.

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Comparative Analysis of Various Multicarrier Modulation Techniques for Different Multilevel Converters

Dec 3, 2018

Journal Journal of Engineering

publisher University of Bagdad

DOI https://doi.org/10.31026/j.eng.2018.12.05

Issue 12

Volume 24

The applications of Multilevel Converters (MLCs) are increasing because of the huge demand for clean power; especially these types of converters are compatible with renewable energy sources. In addition, these new types of converters have the capability of high-voltage and high-power operation. A nine-level converter in three modes of implementation—diode clamped-MLC (DC-MLC), capacitor clamped-MLC (CC-MLC), and modular structured-MLC (MS-MLC)—is analyzed and simulated in this paper. Various types of multicarrier modulation techniques (MMTs) (level shifted (LS) and phase shifted (PS)) are used for operating the proposed nine-level MLCs. The MATLAB/Simulink environment is used for the simulation, extracting, and analysis of the results. Finally, a comparison is made between the results for all topologies that are implemented regarding the criteria of the output voltage waveforms harmonic distortion factor, the of the necessitated power components, and the complexity of each circuit. Based on simulation results, the MS-MLC is finer as compared to the other types of MLCs. It also observed that the MLCs (with three types) using the Phase Opposition Disposition (POD) technique performed better in terms of getting greater fundamental output voltage and lower THD% as compared to the other techniques.

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PEM Fuel Cell Powered Multilevel Converter

Nov 1, 2018

Journal Anbar Journal of Engineering Science,

DOI https://doi.org/10.37649/aengs.2018.147746

Issue 3

Volume 7

The use of renewable energy sources such as fuel cells (FC), solar cells, wind turbine generators, and micro hydro-turbines is in huge demand in the recent era. FCs are electrochemical devices that convert the chemical energy of a reaction directly into electrical energy, and they are a clean energy source. In this paper, modeling of a renewable energy system is achieved. The system consists of a Proton Exchange Membrane (PEM) FC as an energy DC source, a Boost Converter (BC), and a 7-level cascaded Multilevel Converter (MC) fed load. FC-powered systems have low voltage and high current output characteristics; therefore, the output voltage of the FC must be stepped up by DC-DC BC. The proposed scheme is modeled and simulated using MATLAB-SIMULINK.

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Design and Realization of Stepper Motor Driver with on PLC

Oct 1, 2018

Journal Al-Kitab Journal for Pure Science

Issue 2

Volume 1

The paper is giving a simple and economical solution but with high performance for programming and controlling a stepper motor (SM) by using an industrial programmable logic controller (PLC). PLC is advanced as a control device without any interface or drive circuits, thereby reducing the number of circuit components, lowering the cost, and improving the overall reliability of the system. SM is precise and accurate in creating discrete stationary angular revolutions, and for this characteristic, it has been used in numerous applications. The interested applications are its usage in Robotic Arm Controller (RAC). The proposed control algorithm involves the control of SM speed, direction (both clockwise & counterclockwise), and the number of steps of rotation. The SM that is proposed to be controlled in the experiment is four-phase (6 wires ), with a hybrid coil category, unipolar connection of stator winding, 24V rated voltage, 1.5A rated current, and a step angle equal to 1.8º. Function Block Diagram (FBD) program design language is used to realize the proposed PLC control program for SM. Wave Stepping Excitation Method (WSEM) was employed for driving the SM.

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Design a Fuel Cell Based Drive DC Motor for an Electric Vehicle Applications

Jun 7, 2018

Journal International Journal of Engineering and Technology

DOI https://doi.org/10.14419/ijet.v7i4.16308

Issue 4

Volume 7

The applications of a fuel cell (FC) in the field of the electric vehicle have realized wide popularity since the past few years because of the problem of relative increases in fossil fuel prices in addition to the depletion of this fuel. The objective of this study is to design DC drivers based on a DC-DC buck converter for a separately excited DC motor as a traction motor used for an electric vehicle. This motor is fed by Polymer Electrolyte Membrane (PEM) FC as a renewable energy source. Many control strategies are implemented to produce the suitable gating signal for the buck converter and get the best motor operation response, which are the proportional integral (PI) controller, fuzzy logic (FL) controller, and FL-based self-tuning PI controller. The proposed FC power system is modeled and simulated using Matlab-Simulink and the Fuzzy toolbox. The performance and accuracy of the proposed algorithm have been investigated in different situations. The simulation results showed that the speed response of the DC motor controlled by the FL-based self-tuning PI controller had improved the performance (overshoot, rising time, settling time, and steady-state error) when compared to the typical PI controller and FL controller.

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Design of Genetic Algorithm Controller to Fuel Cell fed SEIG Derived by DC Motor

Jun 7, 2018

Journal International Journal of Engineering and Advanced Technology

Issue 4

Volume 7

This paper presents a new method for driving a self-excited induction generator (SEIG); a DC motor is used to drive the SEIG as a prime mover, which is fed from a fuel cell (FC) via a DC-DC buck converter. FC is considering one of the promising renewable energies. The SEIG is loaded by an external load. Two control loops have been designed to enhance the performance of the proposed system to normalize the speed of the DC motor. Both controllers are designed using hybrid Proportional Integral (PI) based on Genetic Algorithm (GA); the first control loop is used to control the output voltage of the buck converter by controlling the gating signals of the converter to adjust the speed. The second controller regulates the hydrogen gas flow rate (i.e., fuel composition ratio of the fuel cell) with regard to the error signal of speed. The speed response of the DC motor and the output power of the generator are investigated under many load conditions. Based on simulation results, it is observed that the controllers provide robust adjustment for speed, and the output voltage of the generator is a pure sine wave with very little content of harmonics, and thus the amplitude of Total Harmonic Distortion (THD) is 0.42%, which is considered very low.

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Speed Control of Three-Phase Induction Motor Based on V/F Technique

Dec 1, 2017

Journal Al-Kitab Journal for Pure Science

Issue 1

Volume 1

This paper presents the design of a Xilinx Field Programmable Gate Array (FPGA)-based Sinusoidal Pulse Width Modulation (SPWM) for a three-phase Voltage Source Inverter (VSI) with Variable Voltage Variable Frequency (VVVF) for controlling the speed of a three-phase Induction Motor (IM) by using a V/F control strategy in open loop mode. In the present work a Xilinx FPGA SPARTAN 3E card is used as a PWM generator to generate appropriate signals to the inverter switches. The FPGA is programmed by using the Hardware Description Language: VHDL. Using Xilinx FPGA to generate PWM provides flexibility to modify the designed circuit without altering the hardware part, easy and fast circuit modification, comparatively low cost for complex circuitry and rapid prototyping.

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Simulation and Characteristics Study of Solar Photovoltaic Array Using Matlab/Simulink

Jan 1, 2016

Journal AL-Taqani Journal

Issue 1

Volume 29

The study of Photovoltaic (PV) systems in an efficient manner requires a precise knowledge of the I-V and P-V characteristic curves of solar PV array. Therefore, this paper presents modelling and simulation of solar PV module using Matlab/Simulink. This model is based on mathematical equations and is described through an equivalent circuit including a photo current source, diode, shunt resistor expressing leakage current and series resistor represents the internal losses due to the current flow. The developed model allows the prediction of PV array behaviour under different circuit model and environmental parameters (temperature, and solar radiation).A particular typical 175Watt solar panel was used for model evaluation, and results was compared with points taken directly from the manufacturer's published curves and show excellent correspondence to the model.

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Photovoltaic Battery Charging System Based on PIC16F877A Microcontroller

Apr 1, 2014

Journal International Journal of Engineering and Advanced Technology

Issue 4

Volume 3

This paper presents the design and practical implementation of a buck-type power converter for Photovoltaic (PV) system for energy storage application based on constant voltage Maximum Power Point Tracking (MPPT) algorithm. A buck converter is used to regulate battery charging. The system is controlled by a Peripheral Interface Controller (PIC) 16F877A microcontroller from Microchip via sensing the solar panel voltage and generating the Pulse Width Modulation (PWM) signal to control duty cycle of the buck converter. This type of microcontroller was chosen because it has the necessary features for the proposed design such as built-in Analog-to-Digital Converter (ADC), PWM outputs, low power consumption and low cost. Simulation and experimental results demonstrate the effectiveness and validity of the proposed system. Index Terms-Photovoltaic, MPPT, Buck Converter, PIC16F877A.

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Design a Wind Turbine Energy System Based on MATLAB/SIMULINK

Jan 1, 2014

Journal Eng. & Tech. Journal

Issue 7

Volume 32

This paper presents modeling and simulation of a wind turbine electrical generation system using the Matlab/Simulink software package. This system consists of a wind turbine coupled with the Permanent Magnet Synchronous Generator (PMSG). The PMSG is connecting to the load through a three-phase full-wave rectifier and a buck converter. A control strategy based on Fuzzy Logic Controller (FLC) is presented to regulate the output voltage of the wind generation system irrespective of variations in the wind speed and load. The wind turbine and FLC are implemented in Matlab/Simulink based on its mathematical model of its equivalent equations. Simulation results show that the controllers can regulate the output voltage of the system under varying wind speed and load conditions.

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Wide Range Modulation Index Variation/FPGA Based SPWM Three-Phase Inverter

Mar 1, 2010

Journal Gulf University Journal

Issue 1

Volume 2

This paper presents the design of a Xilinx Field Programmable Gate Array (FPGA)-based Sinusoidal Pulse Width Modulation (SPWM) for a three-phase voltage source inverter with a wide range of modulation index variation. The FPGA is a programmable logic device used as a PWM generator to generate an appropriate signal to the inverter switches. The proposed control scheme has been realized and implemented using the Xilinx FPGA SPARTAN 3E card. The FPGA program was carried out using Hardware Description Language VHDL. As compared with conventional digital pulse width modulation techniques, the proposed method offers several advantages: easy digital design, minimal scaling of digital circuits, reconfigurability, flexibility in adaptation, and direct hardware implementation, while maintaining high control performance. In addition to Xilinx FPGA, Matlab/Simulink software was used for simulation and verification of the proposed circuit before implementation. Simulation and experimental results show that both are in close agreement.

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PLC Controlled Multiple Stepper Motors Using Various Excitation Methods

May 8, 2018 - May 9, 2018

Publisher IEEE

DOI https://doi.org/10.1109/iiceta.2018.8458097

Country Iraq

Location Najaf

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“Analysis of Seven Level Cascaded Multilevel DC-Link Inverter

Nov 19, 2013 - Apr 28, 2025

Publisher University of Mosul- College of Eng

Country Iraq

Location Mosul

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Design and Implementation of Five Level Cascaded H-bridge MLI

Feb 20, 2013 - Apr 28, 2025

Publisher 3rd Scientific International Conference 2013

Country Iraq

Location Najaf