Browsing Ismail Daut, Prof. Dr. by Author "ismail.daut@unimap.edu.my"
Now showing items 1-20 of 49
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A 5-level multilevel inverter using LM350 voltage regulator IC
Rosnazri, Ali; Ismail, Daut, Prof. Dr.; Soib, Taib; Noor Shahida, Jamoshid (Institute of Electrical and Electronics Engineers (IEEE), 2010-06-23)This paper presents a 5-level multilevel inverter for low power applications that not exceeding 30W using the common LM350 voltage regulator IC. A microcontroller with appropriate program is used to control on the biasing ... -
Analysis flux on transformer core lamination assembled with mix between 60o- 45o T-joint using 2DFEM
Dina Maizana, Maiz Ahmad; Ismail, Daut, Prof. Dr.; Fijay, Fauzi (Universiti Malaysia Perlis (UniMAP)Institut Matematik Kejuruteraan, 2010-06-02)This paper describes analysis 2DFEM on 100kVA 3phase distribution transformer assembled with mix between 60-45 T-joint and mitred lap corner joint with stagger yoke and limb for one lamination. The simulation involves the ... -
Building factor of Grain-Oriented Silicon Iron (3% SiFe) with different thickness on 100kVA three phase distribution transformer core
Nor Ashbahani, Mohd Kajaan; Ismail, Daut, Prof. Dr.; Mohd Irwan, Yusoff (Trans Tech Publications., 2012-03)The power loss in laminated transformer cores is always greater than the nominal loss of the electrical steel laminations, by a factor known as the building factor. This paper discussed result of an investigation towards ... -
Clear sky global solar irradiance on tilt angles of photovoltaic module in Perlis, Northern Malaysia
Ismail, Daut, Prof. Dr.; Muhammad Irwanto; Mohd Irwan, Yusoff; Gomesh Nair, Shasidharan; Noor Syafawati, Ahmad (Institute of Electrical and Electronics Engineers (IEEE), 2011-06-21)The performance of a photovoltaic (PV) is highly influenced by its orientation and its tilt angle with the horizontal, due to the fact that both the orientation and tilt angle change the amount of solar radiation reaching ... -
Combination of Hargreaves method and linear regression as a new method to estimate solar radiation in Perlis, Northern Malaysia
Ismail, Daut, Prof. Dr.; Muhammad Irwanto; Mohd Irwan, Yusoff; Gomesh Nair, Shasidharan; Noor Syafawati, Ahmad (Elsevier Ltd., 2011-11)The best way to obtain the solar radiation data of a particular place of interest (POI) is to measure at the specific site continuously and accurately over the long term. However, due to financial, maintenance, calibration ... -
Comparison between the localized power loss and flux distribution in a three phase distribution transformer 100 kva assembled from various type of T-joint geometry with Staggered Yoke
Ismail, Daut; Dina Maizana, Maiz Ahmad; Soib, Taib (ACTA Press, 2008-04-02)This paper describes the result of an investigation of the variation of localized power loss and flux distribution in 3-phase transformer cores 100kVA assembled from various types of T-joint geometry. The localized power ... -
Comparison of flux density between different thicknesses of non oriented electrical steel material using FEM software
Yanawati, Yahya; Ismail, Daut, Prof. Dr.; Siti Rafidah, Abdul Rahim; Nur Shafiqin, Shariffuddin; Mastika, Abdullah; Pungut, Ibrahim (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)Generally, 0.35mm has better performance than 0.5mm thickness of material in terms of losses reduction and money saving potential. This paper presents the comparison of the 0.35mm and 0.5mm thickness of non oriented ... -
Core loss measurements of three phase AC induction motor
Ismail, Daut, Prof. Dr.; Anayet, Karim; Gomesh Nair, Shasidharan; Asri, N.; Syatirah; Muzhar, M. (Institute of Electrical and Electronics Engineers (IEEE), 2010-06-23)Core loss measurements at the field level for AC induction motor have been described. The standard requirements is the conventional no-load test to measure the “rotational losses” (sum of the core, friction & windage losses) ... -
Current transformer reaction with linear and non-linear loads
Ismail, Daut, Prof. Dr.; Khairul Anuar, Mohd Nor; Indra, Nisja; Shatri, C.; Reza, Mohyin (Institute of Electrical and Electronics Engineers (IEEE), 2010-06-23)The used of non-linear loads nowadays in industrial system has increased accordance with the present technology. However, the used of non-linear loads supply more harmonic distortion into the distribution systems. ... -
Determination of reactive power flow in deregulated transmission system
Mohd Herwan, Sulaiman; Mohd Wazir, Mustafa; Omar, Aliman; Ismail, Daut, Prof. Dr. (Institut Teknologi Brunei, 2008-11-03)The electricity industry throughout the world, which has long been dominated by vertically integrated utilities, is undergoing enormous changes. Deregulation has necessitates the decomposition of three components of electric ... -
Different clamp stress impact on losses and flux distribution between two of 3 phase distribution transformer 1000 kVA assembled with stagger yoke of transformer core lamination
Ismail, Daut, Prof. Dr.; Dina, Maizana,; S., Uthman; Soib B., Taib (Institute of Electrical and Electronics Engineers (IEEE), 2007-11-25)The power loss of transformer core are depends on a large extent on mechanical stress. This paper describes the result of an investigation on effect different clamp stress of core lamination in the two of 3 phase distribution ... -
Effect of different size of rotor bars on induction motor efficiency
Pungut, Ibrahim; Ismail, Daut, Prof. dr.; Rosnazri, Ali; Yanawati, Yahya; Nor Shafiqin, Shariffuddin; Mastika, Abdullah (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)Efficiency is the main consideration in designing of any equipment. In an induction motor, there are many parameters that could affect the motor efficiency. One of them is the size of rotor bar, that contribute to the rotor ... -
The effect of different stator slot size on the stator copper loss
Nor Shafiqin, Shariffuddin; Ismail, Daut, Prof. Dr.; Yanawati, Yahya; Pungut, Ibrahim; M., Abdullah; Nair, Gomesh; M., Asri (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)The input power to an induction motor is in the form of three phase electric voltages and currents. The first losses encountered in the machine are I2R losses in the stator winding. The stator copper loss occurs when the ... -
Effect of stack of transformer core lamination on losses and flux distribution in 3-phase distribution transformers 1000kVa
Ismail, Daut; Dina Maziana, Maiz Ahmad; Shuhaimi, Zakaria; Soib, Taib (Universiti Malaysia Perlis, 2008)This paper describes the results of an investigation on the effect of different amount of layers per stack of core lamination in the three of 3-phase distribution transformers 1000kVA. The investigation involves the variation ... -
Epstein and iron loss test for Incoming Quality Assurance (IQA)
Mastika, Abdullah; Ismail, Daut, Prof. Dr.; Yanawati, Yahya; Nor Shafiqin, Shariffuddin; Pungut, Ibrahim (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)Epstein test is well known method to test the specific total loss in magnetic material. Epstein test procedures are complicated as well as destructive test. Therefore, the Iron Loss Tester is an alternative test and can ... -
Fabrication and investigation of copper rotor bar on 0.5HP induction Motor-A performance and economical study
Ismail, Daut, Prof. Dr.; Gomesh Nair, Shasidharan; Yanawati, Yahya; Nor Shafiqin, Shariffuddin; Muhammad Irwanto, Misrun; Mohd Irwan, Yusoff; Anayet, Karim (Australian Journal of Basic and Applied Sciences, 2011-05)The paper deals with the fabrication of copper rotor bars for 0.5HP induction motor and then comparing it with the existing aluminium rotor bars. From this experiment the rotors are compared in terms of efficiency increment ... -
Flux pattern in 1000 kVA 11/.433 kV distribution transformer core to sinusoidal wave
Shahanom, Uthman; Ismail, Daut, Prof. Dr.; Dina Maizana, Maiz Ahmad, Ir. (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)A study was conducted using sinusoidal waveform to capture flux pattern in CRGO M5 material in a 1000kVA 11kV 3 phase transformer core. It is found that it takes about 180⁰ electrical degree cycle for a pool of flux ... -
The impacts of stator materials on induction motor nameplate parameters for high performance
Ismail, Daut, Prof. Dr.; Mohd S Ezwan, Abdullah; Gomesh Nair, Shasidharan; Yanawati, Yahya; Nor Shafiqin, Shariffuddin; Pungut, Ibrahim (Institute of Electrical and Electronics Engineers (IEEE), 2010-12-13)Core materials and magnet wire sizes were analyzed in order to find out the impacts on nameplate for high performance motor. Stack length and back core iron depth of stator geometry design are the parameters involve in ... -
Improvement of induction machine performance using power factor correction
Ismail, Daut, Prof. Dr.; Mohd Irwan, Yusoff; Muhammad Irwanto; Safwati, Ibrahim; Gomesh Nair, Shasidharan; Ezzani, M.; Risnidar, Chan (Institute of Electrical and Electronics Engineers (IEEE), 2011-06-21)In this paper, a new approach to improve power factor (PF) and reduced total harmonic distortion (THDi) is generated by a single phase induction motor is proposed. By designing the necessary technique and methodology, the ... -
In house construction of an induction motor rotor by using 0.35mm thickness of steel sheet for efficiency based investigation
Ismail, Daut, Prof. Dr.; Gomesh Nair, Shasidharan; Yanawati, Yahya; Muhammad Irwanto, Misrun; Nor Shafiqin, Shariffuddin (Trans Tech Publications, 2012)In this paper, an in house production of a 0.5hp induction motor's rotor is investigated. This investigation considers the induction motor's efficiency and losses dissipation as an important aspect to determine the rotors ...