Now showing items 133-152 of 154

    • Sources and Impact of Harmonic in Household and Office 

      Ismail, Daut, Prof. Dr.; Risnidar Chan, Bahaudin, Ir.; Norhaidar, Hashim; Surya Hardi, Ir.; Indra, Nisja (School of Electrical System Engineering, 2008-01-09)
    • Special designed universal power switching generator for power electronics studies 

      Rosnazri, Ali; Ismail, Daut, Prof. Dr.; Tunku Muhammad Nizar, Tunku Mansur; Nor Hanisah, Baharudin; Irwanto, Misrun; Soib, Taib (Institute of Electrical and Electronics Engineers (IEEE), 2011-06-21)
      This paper presents a specially designed power switching generator device that produces 4 types of waveforms; square-wave, sinusoidal PWM, quasi-sinewave or multilevel and high-frequency DC pulses with a total of 14 different ...
    • Special designed universal power switching generator simplifies power electronics studies 

      Rosnazri, Ali; Ismail, Daut, Prof. Dr.; Tunku Muhamad Nizar, Tunku Mansur; Nor Hanisah, Baharudin; Irwanto, Misrun (Institute of Electrical and Electronics Engineers (IEEE), 2011-06-06)
      This paper presents a specially designed power switching generator device that produces 4 types of waveforms; square-wave, sinusoidal PWM, quasi-sinewave or multilevel and high-frequency DC pulses with a total of 14 different ...
    • State space averaging technique of power converter with digital PID controller 

      Mohd Faridun Naim, Tajuddin; Rahim, N. A.; Ismail, Daut; Baharuddin, Ismail; Mohd Fayzul, Mohammed (Institute of Electrical and Electronics Engineering (IEEE), 2009-01-23)
      This paper describes a digital Proportional-Integral-Derivative (PID) controller technique applied to the DC-DC buck converter. The converter is modelled using a state spaceaveraging technique. Due to the non-linear of the ...
    • Statistic data analysis of localized magnetic flux density and power loss 

      Mastika, Abdullah; Ismail, Daut, Prof. Dr.; Yanawati, Yahya; Nor Shafiqin, Shariffuddin; Pungut, Ibrahim (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      The experiment data were collected by using the search coil technique and temperature arise with time in order to measure the magnetic flux density and power loss. Statistic data analysis and engineering knowledge are tools ...
    • Study of photovoltaic and inverter characteristics 

      Saidatul Shema, Saad; Ismail, Daut, Prof. Dr.; Muhammad Irwanto, Misrun; S., Champakeow; N. S., Ahmad (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      The development of renewable energy is increasing worldwide because of the growing demand on energy, high oil prices, and concerns of environmental impacts. Solar energy is amongst the highest development of renewable ...
    • A study on voltage sag in industry system with adjustable speed drive 

      Syahrul Ashikin, Azmi; Mohd Fayzul, Mohammed; Siti Rafidah, Abdul Rahim; Mohd Rafi, Adzman; Zainuddin, Mat Isa; Ismail, Daut, Prof. Dr. (Universiti Malaysia Perlis (UniMAP), 2008-03-15)
      The awareness of electric power quality has increased over the past decade as electronic equipment has become more susceptible to power disturbances. The most distruptive power disturbances is voltage sags. Voltage sags ...
    • Testing of contactors under voltage sag and non-sinusoidal voltage conditions 

      Surya Hardi, Amrin; Ismail, Daut, Prof. Dr.; Muhammad Irwanto, Misrun (Institute of Electrical and Electronics Engineers (IEEE), 2010-11-29)
      Sensitivity of electromagnetic contactors for voltage sags and non-sinusoidal voltage supply has been carried out by laboratory testing. Effects of sag characteristics such as; sag magnitude, sag duration and point on wave ...
    • TiO2 dye sensitized solar cells cathode using recycle battery 

      Ismail, Daut, Prof. Dr.; Muhammad Fitra, Zambak; Muhammad Irwanto, Misrun, Dr.; Shasidharan, Gomesh Nair; Mohd. Irwan, Yusoff (IOP Publishing Ltd, 2013)
      This paper proposed an alternative source of carbon material from recycled battery for the fabrication of cathode of a dye sensitized solar cell. Carbon from recycle battery is extracted and used to fabricate the cathode ...
    • Tracing generators' output in transmission open access 

      Mohd Herwan, Sulaiman; Omar, Aliman; Mohd Wazir, Mustafa; Ismail, Daut (Institute of Electrical and Electronics Engineering (IEEE), 2007-12)
      Over the past few years, the electric power utility industries around the world have experienced a strong drive towards deregulation. Based on the experience of deregulation of the communication, natural gas and airline ...
    • Tracing reactive power flow and loss in electric power systems 

      Mohd Herwan, Sulaiman; Mohd Wazir, Mustafa; Omar, Aliman; Ismail, Daut; Surya Hardi, Amrin; Mohamad Suhaizal, Abu Hassan (Regional Energy Resources Information Center (RERIC), Asian Institute of Technology (AIT), 2009-03)
      This paper suggests a systematic method to trace the reactive power flow and loss named as Proportional Tree Method (PTM). From the power flow solution, the test system is modeled conceptually like a tree, where the reactive ...
    • Tracing real and reactive power in open access network 

      Mohd Herwan, Sulaiman; Mohd Wazir, Mustafa; Omar, Aliman; Ismail, Daut (Universiti Malaysia Perlis, 2008)
      The main objective of this paper is to present a simple and general methodology for tracing the power output of each generator to the line flows and loads through out the electrical power network. The tracing algorithm is ...
    • Tracking error analysis of a rotation-elevation mode heliostat 

      Omar, Aliman; Ismail, Daut; Muzamir, Isa; Mohd Rafi, Adzman (Science Publications, 2007)
      For the past few years, great efforts have been done in improving the tracking accuracy of a newly proposed rotation-elevation tracking mode heliostat. A special simulation program has been developed to systematically ...
    • Transformer manufacturers in Malaysia: perspective in manufacturing and performance status 

      Ismail, Daut; S, Uthman (Kolej Universiti Kejuruteraan Utara Malaysia, 2006-06-15)
      Transformer is a static equipment which used electromagnetic induction to transfer electrical energy from one circuit to another. It is considered as one of the critical and important equipment in power industry. This ...
    • Transformers design with T-joint 45º for minimum power loss 

      Mohamad Hafeeze Mohamad Nasir (Universiti Malaysia PerlisSchool of Electrical Systems Engineering, 2008-03)
      The transformer is a static device and has rotational losses. When transformers transfer power, they do so with a minimum of loss. Transformers are widely used in many sectors such as industrial sector and commercial ...
    • Undergraduate project management and the role of industry 

      Kennedy, Robert T.; Ismail, Daut (Universiti Teknologi Malaysia (UTM), 2005-12-13)
      University engineering education and industrial employer's expectations of new graduates are considerably apart if the adverse comments that appear in the press are to be accepted. Advancement in technology results in the ...
    • UPFC device application on power system oscillations to improve the damping performance 

      Ali Nasser, Hussain; Mohd Fareq, Abd. Malek, Dr.; Mohd Abdur Rashid, Dr.; Latifah, Mohamed; Ismail, Daut, Prof. Dr. (Trans Tech Publications, 2013)
      UPFC is considered as an important modern device in the flexible ac transmission systems family that provides the controllability and flexibility for transmission lines. It is also capable of enhancing the stability of the ...
    • Utility specification for distribution transformers in Malaysia 

      Ismail, Daut; Kamsani, Abdul Majid; S. Uthman; Soib, Taib (Universiti Sains Malaysia (USM), 2005-07-22)
      Optimum design of distribution transformer is desirable by all utilities as they contribute quite a large portion of the investment in an electrical distribution network system. Utility investigation of the specification ...
    • Voltage sag and the sensitive load 

      Ismail, Daut; Che Mat Hadzer, Mahmud; Surya, Hardi; Risnidar Chan, Bahaudin; Saedah, Siraj; Nor Haidar, Hashim (Universiti Malaysia Sarawak (UNIMAS), 2007-12-28)
      Voltage sag is the important factor in power quality problem faced by many industrial consumers. The most frequently reported among various types of power quality disturbance are voltages sags. The disturbance will cause ...
    • Wavelet based distortion measurement and enhancement of ECG signal 

      Md. Abdul, Awal; Mohiuddin, Ahmad, Prof. Dr. Engr.; Ismail, Daut, Prof. Dr.; Ernie, Che Mid; Mohd. Abdur, Rashid, Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2012-02-27)
      This paper describes the research carried out to eliminate the noise found in ECG signal and cardiac rhythm using Coiflet wavelet since its scaling function is closely related to the shape of ECG and suited for denoising ...