Norkharziana Mohd Nayan
Thumbnail Image
Preferred name
Norkharziana Mohd Nayan
Official Name
Norkharziana, Mohd Nayan
Alternative Name
Nayan, Norkharziana Mohd
Nayan, M. N.
Main Affiliation
Scopus Author ID
54791103800

Research Output

Filters

3
3
3
Reset filters

Settings
Now showing 1 - 3 of 3
  • Publication
    Multiple switching pattern for a modified reduce switch multilevel inverter: A comparison analysis
    ( 2020-01-07)
    Mohd Hafiz Arshad
    ;
    Siti Khodijah Mazalan
    ;
    Nor Ashbahani Mohamad Kajaan
    ;
    Norkharziana Mohd Nayan
    ;
    Zainuddin Mat Isa
    ;
    Baharuddin Ismail
    ;
    Izati Abdullah N.
    A primary concern of multilevel inverter is its capability to produce desired alternating voltage close to sinusoidal at the output, using multiple sources of DC voltage input. Mostly a multilevel inverter is used to generate the AC voltage from DC voltage. The aim of this paper is to investigate the output of 9 level multilevel inverter by modifying the conventional 5 levels H-bridge cascade multilevel inverter. The proposed design intending to reduce the number of switches from 16 switches to 10 switches. Implementation of different switching pattern methods; equal phase (EP), half equal phase (HEP), half height (HH) and feed forward (FF) and the related expression are presented in this paper. In the result section shows a different percentage of total harmonic distortion achieved. Out of all 4 methods, HH method suppressed distortion wave the most and resulted in the lowest THD in the proposed inverter. This paper shows that by reducing the number of switches in multilevel inverter structure maintains the same quality output as the conventional H-bridge topology. Furthermore, the manipulation of the switches firing angle contribute in decreasing the system THD.
  • Publication
    A Dragonfly Algorithm Application: Optimizing Solar Cell Single Diode Model Parameters
    ( 2020-01-07)
    Zainuddin Mat Isa
    ;
    Norkharziana Mohd Nayan
    ;
    Nor Ashbahani Mohamad Kajaan
    ;
    Mohd Hafiz Arshad
    This paper provides an overview of optimizing solar cell single diode parameters using Dragonfly Algorithm. The 57 mm diameter commercial (R.T.C. France) silicon solar cell measurement data are taking as the data source for the optimization process. The results produced are compared with NM-PSO and IJAYA algorithms to observe the efficiency, accuracy and reliability of the proposed approach.
  • Publication
    THD analysis for symmetrical five level and seven level cascaded multilevel inverter
    ( 2020-01-07)
    Kaja Mohideen
    ;
    Nor Ashbahani Mohamad Kajaan
    ;
    Zainuddin Mat Isa
    ;
    Norkharziana Mohd Nayan
    ;
    Mohd Hafiz Arshad
    ;
    Saidatul Shema Saad
    Total Harmonic Distortion (THD) is one of the problems in the multilevel inverter. This paper discussed a brief review of THD in different cascaded H-bridge multilevel inverter topologies of five levels and seven levels at the output waveforms. The five levels inverter contains eight switches while seven levels inverter used twelve switches. Each single H-bridge inverter circuit is fed by equally independent DC source for both inverters. The inverter uses MOSFET as the switching point and acts as the controller for a fundamental switching operation. The switching value has been set at the gating block to control the operation of the MOSFET switching. Several waveforms and simulation findings are provided to validate the quality of the proposed topology.