Nurul Farhana Abdul Hamid
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Preferred name
Nurul Farhana Abdul Hamid
Official Name
Nurul Farhana, Abdul Hamid
Alternative Name
Abd Hamid, Nurul Farhana
Farhana Abd Hamid, Nurul
Farhana Abdul Hamid, Nurul
Hamid, Nurul Farhana Abdul
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Scopus Author ID
55612228800

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  • Publication
    Design and simulation of single phase inverter using SPWM unipolar technique
    ( 2020-01-07)
    Nurul Farhana Abdul Hamid
    ;
    Alleef Abd Jalil M.
    ;
    Nor Syafiqah Syahirah Mohamed
    This paper presents the design and simulation of single-phase inverter using sinusoidal pulse width modulation (SPWM) unipolar technique. The circuit has been designed and simulated using the Matlab/Simulink program. Metal Oxide Semiconductor Field Effect Transistor (MOSFET) has been used as a switch. The project aims to use the Matlab/Simulink program to design, analyze and control switching for inverter circuits. Single-phase inverter circuits are divided into three main divisions which are the inverter part that consists of the MOSFET switch, the control circuit which generates switching pulses generated through the microcontroller and filter parts that contain inductors, capacitors and resistors to reduce harmonic. The results of the experiment show the output of the sine wave with the output voltage of 230 V and 50 Hz.
      15  5
  • Publication
    Self-Charging Technique for DC-Link Capacitor Voltage Control: A Review
    ( 2021-01-01)
    Nurul Farhana Abdul Hamid
    ;
    Atiqi Mohd Zainuri M.A.
    ;
    Aini Hussain
    DC-link capacitors are a crucial component of many electronic converters because they aid in reducing dc-link voltage ripple, absorbing harmonics, and controlling the instantaneous power imbalance between the converter's frontend and rear-end. The dc-link's primary purpose is to operate as a continuous DC storage for the converter's injection current in response supply current. Uncontrolled dc-link capacitor voltage control can cause over-voltage and under-voltage, damaging the dc-link capacitor and disoperation of injection current. Due to the advantages of giving good accuracy of DC voltage and producing a clean and smooth regulated voltage with nearly no ripple, noise, and spike; a dc-link capacitor voltage control with self-charging technique is introduced. This paper reviews the recent self-charging technique applied to regulate the voltage of dc-link capacitor, which is typically categorized into two forms; (1) proportional-integral technique; and (2) fuzzy logic control (FLC) technique. In addition, the working principle, advantages, and disadvantages of both methods are discussed.
      1  14