Now showing items 43-62 of 154

    • Determination of power flow and loss allocation using superposition theory method 

      Mohd Herwan, Sulaiman; M.W., Mustafa; O., Aliman; Ismail, Daut, Prof. Dr. (Regional Energy Resources Information Center (RERIC), Asian Institute of Technology, 2008-03)
      This paper discussed a method to determine power flow and loss from individual generator to particular load and line flows for transmission open access. Based on solved load flow, the method uses basic circuit theories ...
    • 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 ...
    • Development of control circuit for single phase inverter using Atmel Microcontroller 

      Baharuddin, Ismail; Soib, Taib; Abdul Rahman, Mohd Saad; Muzamir, Isa; Ismail, Daut (Kolej Universiti Kejuruteraan Utara Malaysia (KUKUM), 2006-09-16)
      This paper presents the development of control circuit for single phase inverter using Atmel microcontroller. The attractiveness of this configuration is the used of a microcontroller to generate sinusoidal pulse width ...
    • Development of Magnetic Levitation 

      Rizan A. Hamid (Universiti Malaysia PerlisSchool of Electrical Systems Engineering, 2008-05)
      Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. The electromagnetic force is used to counteract the effects of the gravitational ...
    • Development of minimizing the harmonic distortion and improving the power factor by using PFC FA5501 in 3 phase system 

      Yong Pit Hing (Universiti Malaysia PerlisSchool of Electrical Systems Engineering, 2008-03)
      In this thesis, PFC FFA5501 is introducing to reduce the harmonic and increase the power system of the system. By designing the necessary technique and methodology, the overall Power Factor (PF) and the Total Harmonic ...
    • Diagnosis of MV oil filled cable terminations with X-ray imaging and infrared (IR) thermography 

      Mohd Rafi, Adzman; Ismail, Daut, Prof. Dr.; Muzamir, Isa; Baharuddin, Ismail; Omar, Aliman; Lehtonen, Matti; Hyvonen, Petri (Science Publications, 2007)
      A main purpose of doing a diagnostic in cable system including its accessories such as impregnated paper insulated oil filled cable termination is to predict failure before they occur. Those cable and accessories, which ...
    • 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 ...
    • Digital Signal Processing Solutions for Motor Control Using the TMS320F240 DSP-Controller 

      Jimirafizi, Jamil; Ismail, Daut; Tunku Nizar; Shuib, Taib (Kolej Universiti Kejuruteraan Utara Malaysia, 2004)
      This paper presents a Digital Signal Processing (DSP)solutions in digital motor control applications. Digital Signal Processing (DSP) technology is enabling cost effective and energy efficient control system design. The ...
    • 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 solar irradiance and temperature on photovoltaic module electrical characteristics 

      M., Irwanto; Ismail, Daut, Prof. Dr.; Merdang, Sembiring, Dr. Ir.; Rosnazri, Ali; S., Champakeow; S., Shema (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      The electrical characteristics of photovoltaic (PV) module are dependent on solar irradiance and temperature. It consists of short circuit current, open circuit voltage, maximum power, fill factor and efficiency. This ...
    • 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 ...
    • Effects of Appliances to Voltage, Current, Power Factor and Harmonic Distortion 

      Mohd Fayzul, Mohammed; Baharuddin, Ismail; Ismail, Daut; Soib, Taib; Shuhaimi, Zakaria; Kamsani, Abdul Majid (Kolej Universiti Kejuruteraan Utara Malaysia, 2004)
      Power utility always get blame if there are power interruption occurred in residential areas. Many of the residential customers are unaware, that is electrical appliance itself one of the reason that contribute to power ...
    • The effects of harmonic components on transformer losses of sinusoidal source supplying non-linear loads 

      Ismail, Daut; Syafruddin, Hasan; Rosnazri, Ali; Samila, Mat Zali; Haziah, Abd Hamid (Science Publications, 2006)
      An important consideration when evaluating the impact of harmonics is their effect on power system component and loads. Sinusoidalare major components in power systems. The increased losses due to harmonic distortion can ...
    • Electromagnetic Compatibility (EMC) Test Instrumentations and Application 

      Surya, Hardi, Ir.; Ismail, Daut, Prof. Dr.; Indra, Nisja; Syafruddin, Hasan, Ir.; Abd Rahim, Abd Razak; Robert Teasdale, Kennedy, Prof.; Risnidar Chan, Bahaudin, Ir.; Aidil, Suhkri (School of Electrical Systems Engineering, 2008-01-09)
    • Emotional Intelligence : adakah kita menghargainya? 

      Ismail, Daut, Prof. Madya Dr. (Kolej Universiti Kejuruteraan Utara Malaysia, 2006-03)
    • Energy Saving Through Development of New Copper Rotor of Induction Motor 

      Ismail, Daut, Prof. Dr.; Anayet, Karim; Gomesh Nair, Shasidharan; Syatirah, Mohd Noor; Mohd Asri, Jusoh; Mohd Muzhar, Ahmad Tajuddin (Malaysian Invention & Design Society (MINDS), 2010-05-14)
      This product describes the importance of induction motors is aimed at contributing to energy saving efforts. To investigate induction motor efficiency and loss parameters using new copper rotors. New copper rotors are ...
    • 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 ...
    • Evaluation of transformer magnetizing core loss 

      Ahmed, M.A.H.; Soib, Taib; Ismail, Daut; Uthman, S. (Asian Network for Scientific Information, 2006)
      Loss in transformer core is the electrical power lost in terms of heat within the core of transformer, when core is subjected to AC magnetizing force. It is composed of several types of losses such as Hysterics loss, eddy ...
    • 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 ...