Browsing Ismail Daut, Prof. Dr. by Author "Surya, Hardi"

Now showing items 1-9 of 9

    • An alternative approach to solar and grid-connected hybrid electricity for homes and buildings in Malaysia 

      Rosnazri, Ali; Ismail, Daut, Prof. Dr.; Soib, Taib, Prof. Madya Dr.; Muhammad Irwanto, Misrun; Surya, Hardi (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      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 ...

    • 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 ...

    • Influence of soil on grounding system for substation 

      Ismail, Daut; Surya, Hardi; Risnidar Chan, Bahaudin (Kolej Universiti Teknologi Tun Hussein Onn (KUiTTHO), 2006-12-20)
      In designing grounding system of substation, the quantities of grounding system resistance, touch (or mesh) and step voltages must be known for personal safety and equipment protection. The quantities performance is ...

    • Investigation of relationships of adjustable speed drive (ASD) and type of voltage source on harmonic characteristics 

      Risnidar Chan Bahaudin, Ir.; Ismail, Daut, Prof. dr.; Surya, Hardi; M. I., Yussof; Rosnazri, Ali; Dina Maizana, Maiz Ahmad; Eddy, Warman; Masykur (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2012-10-16)
      This paper discussed about relationship of ASD and types of voltage source on harmonic characteristics. Usually, the voltage source is sinusoidal. But in actually, the condition of the load is it has voltage sources ...

    • 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 ...

    • The power quality impact of adjustable speed drives in industrial distribution system 

      Surya, Hardi; Ismail, Daut; Mohd Irwanto; Mohd Herwan, Sulaiman; Risnidar, Chan; Indra, Nisja (Universiti Malaysia Pahang (UMP), 2009-06-20)
      Applications of adjustable speed drives (ASDs) have benefited many industrial facilities. The primary function function of any speed drive is to control the speed of a motor. This control technique can significantly ...

    • Response of induction motor to balance voltage sags and momentary interruption 

      Surya, Hardi; Ismail, Daut, Prof. Dr.; Che Mat, Hadzer; Risnidar, Chan, Ir.; Muhammad Irwanto; Pungut, Ibrahim (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      This paper presents result of experimental study of induction motor behavior when subjected to voltage sags and interruption. Small induction motors were used to investigate this phenomenon. A shaffner “Profline 2100” EMC ...

    • Sensitivity of low voltage consumer equipment to voltage sags 

      Surya, Hardi; Ismail, Daut, Prof. Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2010-06-23)
      Voltage sag is an issue that is becoming increasingly important to electricity consumers at all level of usage. These result from with increasing use of electronic equipment in several sectors for the reason to improve ...

    • 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 ...