Now showing items 41-60 of 87

    • Induction motor behavior due to symmetrical and un-symmetrical faults 

      Ismail, Daut, Prof. Dr.; Surya Hardi, Amrin; Tunku Muhammad Nizar, Tunku Mansur; Syafruddin, Hasan; Indra, Nisja; Mohd Hafizi, Idris (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      This paper presents induction motor behavior caused by symmetrical and unsymmetrical faults. PSCAD/EMTD power system simulation was used for a simple model and the investigation purpose. Voltage sags are generally caused ...
    • Induction motor behavior due to unsymmetrical and symmetrical faults 

      Surya, Hardi; Ismail, Daut, Prof. Dr.; Risnidar Chan Bahaudin; Muhammad Irwanto; Rosnazri, Ali; Indra, Nisja (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      Voltage sags are generally caused by faults on transmission and/or distribution systems. The voltage produced may be either unsymmetrical or symmetrical, depend on type of faults. Unsymmetrical fault is faults caused by ...
    • Investigation of influence of voltage source type on harmonic characteristics 

      Risnidar, Chan Bahaudin; Ismail, Daut, Prof. Dr.; Surya, Hardi Amrin; N., Hashim; Indra, Nisja; Syafruddin, Hasan (Institute of Electrical and Electronics Engineers (IEEE), 2010-06-23)
      This paper discussed about influence of voltage source types on harmonic characteristics. Usually, the voltage source is sinusoidal. But in actually, the condition of the load is has voltage sources through the elements ...
    • Investigation of power factor on harmonic effect due to types of voltage source 

      Risnidar Chan Bahaudin, Ir.; Ismail, Daut, Prof. Dr.; Syafruddin, Hassan; M. I., Yussof; Rosnazri, Ali; Dina Maizana, Maiz Ahmad; Indra, Nisja; Masykur (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      This paper discussed about power factor on harmonic effect due to types of voltage source. Usually, the voltage source is sinusoidal. But in actually, the condition of the load is has voltage sources through the elements ...
    • K-factor due to implementing of DC unbalanced/balanced of a transformer 

      Syafruddin, Hasan; Ismail, Daut, Prof. Dr.; Soib, Taib, Assoc. Prof. Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2007-12-04)
      This paper presents the effects of harmonic distortion on loaded single phase two winding transformer.The impact on K-factor is studied by implementing DC unbalanced and balanced configurations. The measurements are done ...
    • Loss prediction of induction motor using OPERA 2D software 

      Ismail, Daut, Prof. Dr.; Anayet, Karim; Pungut, Ibrahim; Yanawati, Yahya; Nor Shafiqin, Shariffuddin; Faizal (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      The paper discusses the factors which determine the losses of induction motor. The loss mechanisms are described in this paper and it is related to the performance and design characteristics of induction motor such as ...
    • Measurement of overall power loss and flux leakage in M4 grain-oriented silicon iron assembled with 45o T-joint of three phase transformer core 

      Nor Ashbahani, Md. Kajaan; Ismail, Daut, Prof. Dr.; Md. Reza, Md. Mohyin (Institute of Electrical and Electronics Engineers (IEEE), 2010-06-23)
      In this paper, the result of an investigation on the effect of using M4 Grain-Oriented Silicon Iron core material to the 100kVA three phase distribution transformers has been analyzed. The investigation includes the variation ...
    • Measurement of overall power loss for different three phase 100kVA transformer core material 

      Nor Ashbahani, Md. Kajaan; Ismail, Daut, Prof. Dr.; Nasrul Helmei, Halim (Institute of Electrical and Electronics Engineers (IEEE), 2011-06-06)
      This paper discussed result of an investigation towards the effect of using two different Cold Rolled Grain-Oriented (CRGO) Silicon Iron material to the 100kVA three phase distribution transformer. This experiment used M4 ...
    • Microcontroller based PWM inverter for speed control of a three phase induction motor 

      M. A., Latif; Mohammad Jahangir, Alam; Mohd Abdur Rashid, Dr.; Anayet, Karim; Nur Hafiezza, Ramly; Ismail, Daut, Prof. Dr. (Engg Journals Publications, 2013)
      Three phase induction motor has proven to be an extremely reliable electromechanical energy conversion device for over 100 years. The speed control of induction motor is a crying need for the real world industrial applications. ...
    • A new proposal to solar and grid-connected hybrid electricity for homes and buildings in Malaysia 

      Rosnazri, Ali; Ismail, Daut, Prof. Dr.; Soib, Taib; Noor Shahida, Jamoshid (Institute of Electrical and Electronics Engineers (IEEE), 2010-06-23)
      This paper presents the proposal of a solar and grid-connected hybrid electricity system for homes and also buildings. A new concept of using a DC motor and synchronous generator as an electromechanical inverter is proposed ...
    • Normal flux distribution in 45o T-joint of three phase transformer core with staggered yoke and limb10mm 

      Ismail, Daut, Prof. Dr.; Ahmad, D. M. M. (ACTA Press, 2009-09-07)
      This paper describes the result of measurement of normal flux distribution 3-phase 100kVA transformer core assembled with 450T-joint. The investigation involves the variation of normal flux distribution in the core lamination. ...
    • Optimal allocation and sizing of DG in distribution system using evolutionary programming technique 

      Siti Rafidah, Abdul Rahim; Titik Khawa, Abdul Rahman; Ismail, Musirin; Syahrul Ashikin, Azmi; Zainuddin, Mat Isa; Omar, Aliman; Ismail, Daut, Prof. Dr. (Universiti Teknologi MARA (UiTM), 2008-06-04)
      In recent years, distributed generation (DG) installation has shown an increasing growth in the distribution networks around the world due to the raise in promotion towards utilization of renewable energy resources and ...
    • Optimization of current total harmonic distortion on three-level transformerless photovoltaic inverter 

      Ismail, Daut, Prof. Dr.; Muhammad Irwanto; Mohd Irwan, Yusoff; Gomesh Nair, Shasidharan; Noor Syafawati, Ahmad (Elsevier Ltd., 2012)
      This paper presents a new topology of three-level transformerless photovoltaic (PV) inverter. It consists of three main circuits; they are a pulse driver circuit, a full bridge inverter circuit and a power factor correction ...
    • Optimization of photovoltaic module electrical characteristics using genetic algorithm 

      Muhammad Irwanto; Ismail, Daut, Prof. Dr.; Merdang, Sembiring, Dr. Ir.; Rosnazri, Ali; Dina Maizana, Maiz Ahmad (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      This paper presents the optimization of PV module electrical characteristics using genetic algorithm (GA). A mathematical modeling was used to characterize the electrical characteristics of PV module. A 180 W, 30 V, ...
    • Parameter determination of 0.5 hp induction motor based on load factor test - A case study 

      Ismail, Daut, Prof. Dr.; Gomesh Nair, Shasidharan; Muhammad Irwanto; Yanawati, Y.; Nor Shafiqin, S.; Mohd Irwan, Yusoff (Institute of Electrical and Electronics Engineers (IEEE), 2011-06-21)
      The load can influence the efficiency of the induction motor. Even if the load has higher or less load factor, it can reduce the efficiency of an induction motor by several percentage. By knowing this, it is important that ...
    • Performace of wind turbine based on wind speed data and turbine tower height in Kangar, Northern Malaysia 

      Ismail, Daut, Prof. Dr.; Muhammad Irwanto, Misrun; Mohd Irwan, Yusoff; Gomesh Nair, Shasidharan; Noor Syafawati, Ahmad (Australian Journal of Basic and Applied Sciences, 2011-07)
      This paper presents an analysis of the wind speed characteristic in Kangar, Northern Malaysia. The Weibull distribution function is applied to analyze the wind speed characteristic and used to calculate the wind power ...
    • Performance comparison different thickness of non oriented electrical steel material using analysis and performance chart from FEM software 

      Yanawati, Yahya; Ismail, Daut, Prof. Dr.; Nair, Gomesh; Nor Shafiqin, Shariffuddin; Pungut, Ibrahim; M., Abdullah (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      With market condition today, the economics are such that users and engineer are looking for the best fit for the application at the most reasonable cost in purchasing induction motors. Generally, 0.35mm thickness of ...
    • Performance of photovoltaic module at different tilt angles in Perlis, Northern Malaysia 

      Ismail, Daut, Prof. Dr.; Muhammad Irwanto, Misrun; Ezzani, M.; Mohd Irwan, Yusoff (Praise Worthy Prize, 2010-12)
      This paper presents a calculation of the tilt angles and the solar irradiance on PV module in Perlis, Nortern Malaysia. A mathematical modeling is used to calculate the tilt angles and the solar irradiance, which depend ...
    • Photovoltaic powered uninterruptible power supply using smart relay 

      Ismail, Daut, Prof. Dr.; Muhammad Irwanto; Surya, Hardi (Institute of Electrical and Electronics Engineers (IEEE), 2010-06-23)
      Uninterruptible power supply (UPS) sits between a power supply such as wall outlet and devices to prevent undesired feature that can occur within the power source such as outages, sags, surges and bad harmonics from the ...
    • Potential of solar energy harvesting in Ulu Pauh, Perlis, Malaysia using solar radiation - Analysis studies 

      Noor Syafawati, Ahmad; Ismail, Daut, Prof. Dr.; Muhammad Irwanto, Misrun; Farhana, Z.; Nurul Razliana, Abd Razak; Arizadayana, Zahalan; Saidatul Shema, Saad (Elsevier B.V., 2012-12-27)
      This paper presents analysis studies of solar energy harvesting potential in Ulu Pauh, Perlis, Malaysia which located at 6.462°N, 100.351°E. Solar radiation is radiant energy received from the sun, from both direct and ...