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- Distributed generation (2)
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- 4-ethylenedioxythiophene); Polystyrene sulfonate (PEDOT:PSS) (1)
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- Axial flux; Rotor materials; Permanent magnet generator; Halbach array; AFPM generators (1)
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Articles 1 - 20 of 20
Full-Text Articles in Power and Energy
Development Of Hybrid Self-Cleaning Coating Using Lanthanide-Based Light Spectral Response Material To Enhance Photovoltaic (Pv) Panel Efficiency In Operational Environment, Khishn Kumar Kandiah
Development Of Hybrid Self-Cleaning Coating Using Lanthanide-Based Light Spectral Response Material To Enhance Photovoltaic (Pv) Panel Efficiency In Operational Environment, Khishn Kumar Kandiah
Student Works (2020-2029)
The efficiency of photovoltaic (PV) panels is crucial, as solar energy has become an alternative energy source that meets today’s global energy demands. Hence, dust accumulation and spectral mismatch have major effects on the efficiency of PV panels, around 20 %, but in extreme situations, this can reach up to 64 %. Therefore, initiatives are underway to address these issues, including PV cooling systems, conventional cleaning methods, and various coatings to enhance efficiency. In this work, a novel coating is fabricated with high transparency, excellent self-cleaning properties, and good spectral-modifying properties. Two types of powder composites are employed in this …
A Pi Based Coordinated Maximum Power Point Tracking Controller For Grid Connected Photovoltaic System, Md Haidar Islam
A Pi Based Coordinated Maximum Power Point Tracking Controller For Grid Connected Photovoltaic System, Md Haidar Islam
Student Works (2020-2029)
The global demand for electric energy has continuously increased over the last few decades. Photovoltaic (PV) sources are predicted to become one of the biggest contributors to electricity generation among all renewable energy generation candidates by 2040. The photovoltaic system a renewable energy source that has attracted the attention of researchers in recent years. The power output of a photovoltaic system has a complex dependence on varying environmental conditions such as solar irradiation and ambient temperature which cannot be controlled, thereby making the current versus voltage (I-V) and power versus voltage (P-V) characteristics of photovoltaic arrays nonlinear. Therefore, maximum power …
Doped-Magnesium Manganese Oxide Cathode For Rechargeable Magnesium Batteries, Nurhidayu Harudin
Doped-Magnesium Manganese Oxide Cathode For Rechargeable Magnesium Batteries, Nurhidayu Harudin
Student Works (2020-2029)
Magnesium has numerous good characteristics that make it attractive as an electrode material for rechargeable batteries. There are many advantages of Magnesium (Mg) such as available in abundance, ease of handling, low toxicity and environmental friendly. Due to its benefits, magnesium ion battery can be considered as an alternative to lithium in future. In the present work, the improvement electrochemical properties of magnesium-based cathode material, MgMn2O4 was done by adding calcium (Ca) and strontium (Sr) as dopant i.e MgMn2-xCaxO4 and MgMn2-xSrxO4. These materials with compositions of x=0.1,0.2,0.3,0.4,0.5 were synthesized by self-propagating combustion method using citric acid as a reducing agent. …
Investigation Of The Interfacial Energy Level Within Organic Semiconducting Devices, Wong Wah Seng
Investigation Of The Interfacial Energy Level Within Organic Semiconducting Devices, Wong Wah Seng
Student Works (2020-2029)
This main goal of this research is investigating the interfacial energy level of organic semiconducting devices by correlated to the devices performance as well as physical/chemical change in the blended/mixed organic semiconductor system. The first project reported the high efficiency extra warm white organic light emitting diodes (WOLEDs) by blending tris(4-carbazoyl-9-ylphenyl)amine (TcTa) to poly(vinylcarbazole) (PVK). The hole current for PVK:TcTa (60:40) increased by one order of magnitude in hole only device, but the current efficiency of WOLEDs improved only by 7% compared to pristine PVK. Using Ultraviolet photoelectron spectroscopy (UPS), it was discovered the hole injection barrier between poly(3,4-ethylenedioxythiophene) polystyrene …
Design Of A Single-Carrier Pulse Width Modulation With Submodule Fault-Tolerant Capability For Modular Multilevel Converter, Tuanku Badzlin Hashfi
Design Of A Single-Carrier Pulse Width Modulation With Submodule Fault-Tolerant Capability For Modular Multilevel Converter, Tuanku Badzlin Hashfi
Student Works (2020-2029)
Multilevel converters are attracting a lot of attention and becoming one of the energy conversion choices for new topologies and control in industry applications and research fields. Modular multilevel converters (MMCs) are considered very promising among converter topologies for future medium-voltage and high-power applications compared to NPC, FC and CHB topologies. The improved phase disposition pulse width modulation (PDPWM) technique control for MMCs, which has a fault-tolerant capability, is presented. This study presents two methods to distribute pulses into submodules (SMs) by using PDPWM which has drawback to distribute the power equally among the submodules (SMs). First method, this study …
Under Frequency Load Shedding Scheme For Islanded Distribution System Based On Mixed Integer Linear Programming, Sohail Sarwar
Under Frequency Load Shedding Scheme For Islanded Distribution System Based On Mixed Integer Linear Programming, Sohail Sarwar
Student Works (2020-2029)
In recent years, significant climate changes have pivoted the distribution system towards utilization of renewable energy, particularly through distributed generators (DGs). Although DGs offer many benefits, its integration affects the stability of the system, which could lead to blackout, when the grid is disconnected. The system frequency will drop drastically if DG’s generation capacity is less than the total load demand in the network. In order to sustain the system stability, Under Frequency Load Shedding (UFLS) is a commonly used technique to minimize the difference in load demand and power generation. However, existing load shedding techniques are lack in accurate …
Optimal Distribution System Reconfiguration Incorporating Dg And Variable Load Profile Using Artificial Neural Network, Hesham Hanie Youssef
Optimal Distribution System Reconfiguration Incorporating Dg And Variable Load Profile Using Artificial Neural Network, Hesham Hanie Youssef
Student Works (2020-2029)
Optimal network reconfiguration is a common method used in distribution systems to ensure minimum power losses are always attained. This is very important task for achieving cost effective operation. Due to varying load demands, conventional network reconfiguration techniques have to be repeated whenever system loading changes to find a new configuration that has minimum power losses. This task is time consuming and ineffective approach for a real time application. Therefore, this research proposes an Artificial Neural Network (ANN) technique for optimal distribution network reconfiguration to overcome long processing time, mainly in load variation case. The proposed method involves; (1) Implement …
Modified Fractional Order Sliding Mode Control For Speed Control Of Permanent Magnet Synchronous Motor, Fardila Mohd Zaihidee
Modified Fractional Order Sliding Mode Control For Speed Control Of Permanent Magnet Synchronous Motor, Fardila Mohd Zaihidee
Student Works (2020-2029)
In recent years, energy saving research activities have focused on electric motors and their systems since they are the main consumer of electricity in the industrial sector. Permanent magnet synchronous motor is known as a high-efficiency motor and slowly replacing induction motors in the industries. For speed control of PMSM, the sliding mode controller (SMC) has been widely used due to its robustness, high accuracy, and simplicity. The main disadvantage of the SMC method is the chattering phenomenon, which should be reduced or eliminated without compromising the controller’s robustness. Fractional order sliding mode speed control (FOSMC) of PMSM is proposed …
Optimal Distribution System Reconfiguration Incorporating Distributed Generation Based On Simplified Network Approach, Mohammad Al Samman
Optimal Distribution System Reconfiguration Incorporating Distributed Generation Based On Simplified Network Approach, Mohammad Al Samman
Student Works (2020-2029)
Network Reconfiguration (NR) and Distributed Generation (DG) are well-accepted strategies to minimize power loss and voltage deviation in the Electrical Distribution Network (EDN). Since the NR problem contains a huge combinational search space, most researchers applied meta-heuristic methods to attain optimal NR solution. However, meta-heuristic methods do not always guarantee optimal solution and furthermore they consume huge processing time. This occurs mainly due to (1) random solution’s initialization and (2) the verification of solution in each iteration to fulfill the operation constraints during the optimization process. Besides, solving the NR problem simultaneously with DG placement and sizing increases the computational …
Low-Power Cmos Cross-Coupled Differential-Drive Rectifier For Ambient Radio Frequency Energy Harvesting Systems, Sing Leung Gabriel Chong
Low-Power Cmos Cross-Coupled Differential-Drive Rectifier For Ambient Radio Frequency Energy Harvesting Systems, Sing Leung Gabriel Chong
Student Works (2020-2029)
Wireless Sensor Node (WSN) for the Internet of Things (IoT) and Internet of Everything (IoE) will require harvesting low-power ambient Radio Frequency (RF) energy to achieve self-power capabilities, alleviating the need of batteries. The research title of “Low-Power CMOS Cross-Coupled Differential-Drive Rectifier for Ambient Radio Frequency Energy Harvesting Systems” relates to the design of integrated circuit (IC) rectifiers for low-power ambient RF energy harvesting (RFEH) in complementary-metal-oxide-semiconductor (CMOS) technology. The adoption of CMOS for the rectifier designs is to achieve small physical form factor, low-cost, and system-on-chip (SoC) integration. The rectifier is the main circuit in an ambient RFEH system …
Analysis Of Protection System Setting In 11kv Distribution System, Alamshah Ammar
Analysis Of Protection System Setting In 11kv Distribution System, Alamshah Ammar
Student Works (2020-2029)
One of the fundamental protections used in electrical network power system is Overcurrent and Earth Fault (OCEF) protection. They have to be both sensitive and quick in minimizing the electrodynamic and thermal stress imposed on the equipment during the fault time interval. It is utmost important for the relays to be capable of removing only the faulty section while keep up the flexibly to solid areas in the system. In order to achieve this objective, correct relay coordination setting is important to prevent the system from suffering catastrophic effects. These days, the consumer is enforcing raising performance demands by reducing …
Fault Location In Distribution System Based On Voltage Sag Analysis, Ahmad Muhamad Firdaus
Fault Location In Distribution System Based On Voltage Sag Analysis, Ahmad Muhamad Firdaus
Student Works (2020-2029)
Fault in the distribution system is something that cannot be avoided. It is a recurring event that occurs due to various factors such as natural occurrence, mechanism failure, or human error. All this contributes to the phenomenon that will affect the stability of the system and result in the loss of power to the consumers. However, such a fault is something that happens unexpectedly, and it is difficult to be eliminated. Therefore, various research work has been done over the years to overcome the problem. All research is done to find the most effective method of finding the fault location …
Optimal Network Reconfiguration And Distributed Generation Sizing With Consideration Of Protection System, Abdul Rahim Mohamad Norshahrani
Optimal Network Reconfiguration And Distributed Generation Sizing With Consideration Of Protection System, Abdul Rahim Mohamad Norshahrani
Student Works (2020-2029)
Research on network reconfiguration (NR) considering distributed generation (DG) commonly focus on the issues of power loss, voltage deviation, DG sizing and its placement. These works are important and required in the planning stage of the distribution networks. In most of the past works, the protection system is neglected in this stage although it is essential to prevent the network from damages during operation. Without proper consideration of protection system settings and coordination during NR, the protection system may operate inaccurately. This happens due to changes in current flow and fault level when the network changes its configuration. As a …
Comparison Of Different Power System Resilience Assessment Methods, Jian How Sam Chan
Comparison Of Different Power System Resilience Assessment Methods, Jian How Sam Chan
Student Works (2020-2029)
Climate change has been given significant attention in recent times, calling for more ideas to address issues stemming from extreme weather events. Until climate change can be slowed down and ultimately be reversed, it is an imminent objective to find solutions for the mitigation and prevention of the effects of catastrophic weather events. History has a record of the devastation caused by such events on electrical power infrastructures. While electrical power systems have conventionally been designed and built to weather everyday conditions, confronting cataclysmic high-impact, low-probability events will require more resilient attributes. Power systems are often deemed as the backbone …
Performance Analysis For Single-Stage And Multi-Stage Coreless Axial Flux Permanent Magnet Generator With Different Rotor Structures, Habib Asiful
Student Works (2020-2029)
Axial flux permanent magnet (AFPM) generator is a good candidate for both low and high-speed applications. Compared to radial flux machines, AFPM generators can be easily cascaded for enhanced power/torque while maintaining a fixed machine diameter. To improve power density and reduce cogging torque, some researchers have proposed the removal of iron core in the stator of AFPM machine, giving rise to the concept of coreless AFPM machine. Nevertheless, most of these coreless machines still require back iron on the rotor and/stator to reduce leakage flux. In this project, different rotor structures for single-stage coreless AFPM generators were considered, using …
Power System Study For Oil And Gas Platform Connected To Onshore Grid, Taharim Rosshidi Hezrimi
Power System Study For Oil And Gas Platform Connected To Onshore Grid, Taharim Rosshidi Hezrimi
Student Works (2020-2029)
Normally for oil and gas offshore platform, the electrical power supply is generated from the generator either using gas turbine generator, gas engine generator and diesel engine generator. The main power supply is backup by diesel engine generator in case emergency or during black start of the platform. As the design of oil and gas platform become complex, the size of generator keeps increasing. A new concept is being explored to mitigate this problem. Oil and gas company is looking to provide power generation from onshore and supplying the electrical power to a substation platform offshore and then distributed it …
Short-Term Electricity Price Forecasting In Deregulated Electricity Market Based On Enhanced Artificial Intelligence Techniques, Pourdaryaei Alireza
Short-Term Electricity Price Forecasting In Deregulated Electricity Market Based On Enhanced Artificial Intelligence Techniques, Pourdaryaei Alireza
Student Works (2020-2029)
Electricity price forecasting is considered as one of prime factors for operation, planning and scheduling of price-setter market participants. However, possessing time variant, non-linear and non-stationary behaviors make the electricity price a complex signal. The main challenge in this area is providing highly accurate and efficient day-ahead price forecasting. A suitable feature selection technique, which is able to model the interacting features and nonlinearities of the forecast processes, is still required although researches have been performed for day-ahead forecasting. In this research, a hybrid electricity price forecasting methodology is proposed using two-stage feature selection method and optimization using adaptive neuro-fuzzy …
Design And Development Of Fiber Bragg Grating Sensor For Detecting Of Hydrogen Gas In Transformer Oil, Mohd Raffi Samsudin
Design And Development Of Fiber Bragg Grating Sensor For Detecting Of Hydrogen Gas In Transformer Oil, Mohd Raffi Samsudin
Student Works (2020-2029)
Hermetically sealed oil-immersed transformers are the key to electricity distribution networks. They are also one of the most expensive facilities in the electricity supply network. Immediate replacement is expected for this type of transformer upon failure because it is directly connected to the customer. Transformer oil acts as insulation, coolant and condition indicator. To date, there is no economical real-time monitoring system available to monitor the transformer oil condition. Therefore, there is a need to develop a cheap, non-intrusive and non-electrical sensor to monitor the health of the transformer by measuring the amount of dissolved hydrogen gas in oil, which …
Low Impedance Restricted Earth Fault Algorithms In Numerical Relays., Babak Nim Taj
Low Impedance Restricted Earth Fault Algorithms In Numerical Relays., Babak Nim Taj
Student Works (2010-2019)
Low impedance restricted earth fault protection is one of the protection function to protect the transformer winding with earthed neutral point. The purpose of this study is to investigate low impedance restricted earth fault algorithm in numerical relays. Five restricted earth fault numerical algorithms from ABB, AREVA T&D, SIEMENS, SCHNEIDER ELECTRIC and GENERAL ELECTRIC are employed for restricted earth fault algorithms assessment.This dissertation is to find out advantages and disadvantages of selected algorithms. Moreover, this dissertation is to compare each algorithm with the other algorithms. Also, magnetizing inrush current, over excitation and CT saturation impression on restricted earth fault operation …
A Comparative Analysis Of Two Independent Power Plants Under Different Ownership, Rangash Natarajan
A Comparative Analysis Of Two Independent Power Plants Under Different Ownership, Rangash Natarajan
Student Works (2000-2009)
Many governments have turned to private investors, especially Independent Power Producers (IPPs), to provide some or all of the nation's power requirements. The main reasons for this are: a) to eliminate the financial burden of the government, b) to promote competition in the generation sector to improve operating efficiency and reduce generating cost, and c) to transfer power generation technology, especially in the developing nations, at a rapid pace. In line with world trends, the Malaysian government, in 1993, deregulated its power generation sector. This was done in order to overcome the shortage of installed capacity due to an increase …