Muhammad Zaid Aihsan
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Preferred name
Muhammad Zaid Aihsan
Official Name
Muhammad Zaid, Aihsan
Alternative Name
Aihsan, M. Z.
Aihsan, Muhammad Zaid
Aikhsan, M. Z.
Aihsan, M. Z.
Main Affiliation
Scopus Author ID
56479160600
Researcher ID
AAB-4469-2021

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  • Publication
    Performance Evaluation of Transformerless Inverter based Quadratic Boost Converter
    ( 2021-01-01)
    Muhammad Zaid Aihsan
    ;
    Muhammad Izuan Fahmi Romli
    ;
    Liew Hui Fang
    ;
    Wan Azani Wan Mustafa
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Al-Abbooda K.S.
    This paper presents a single-phase transformerless inverter based high step-up quadratic boost converter (QBC). By removing the conventional isolation transformer in the single-phase inverter system is grants higher efficiency and reduction in size as well as cost-effectiveness. The proposed topology can generate a standard single-phase power rating of 230 Vrms from a small dc voltage. The capability of the quadratic boost converter to perform a single-stage boost operation is guaranteed before inverted to the alternating sequence of Ac voltages as the constant duty cycle and proper unipolar modulation technique are well implemented. Experimental results are presented to verify the proposed topology capability.
      1
  • Publication
    Investigation and Performance Analysis of DC-DC Boost Converter System
    ( 2021-01-01)
    Mohd Muqri Syahmi Sulong
    ;
    Mohd Saifizi Saidon
    ;
    Muhammad Izuan Fahmi Romli
    ;
    Wan Azani Wan Mustafa
    ;
    Muhammad Zaid Aihsan
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Habelalmateen M.I.
    This paper presents the analysis of a closed loop DC-DC boost converter for renewable energy applications such as PV. Most of renewable energy resources produce DC voltage that implied with DC-DC converters to convert their input voltage into a higher or lower voltage level accordingly to their application. However, there are numerous types of devices or applications that used renewable energy. Thus, it means the evolution of using a closed loop boost converter system must occur. The closed-loop system DC-DC boost converter is used to step up the low-level DC voltage to a high level of DC voltage. By varying the input voltage, the performance of boost converter in terms of its output voltage can be obtained and analysed. Several studies were conducted and validated with hardware implementation. All the results are recorded and show that various levels of input voltage can be converted into a fixed value of output voltage by using this converter. To emphasise, the boost converter generated 73.33 V output when an input voltage of 12 V. Whereas this experiment is conducted to analyse the boost converter performance so that can consider if this converter is compatible with the IR dryer system.
      1
  • Publication
    Comparative investigations on different types of inductors in single-phase inverter
    ( 2021-12-01)
    Muhammad Zaid Aihsan
    ;
    Ahmad Muhyiddin Yusof
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Baharuddin Ismail
    ;
    Wan Azani Wan Mustafa
    ;
    Mohd Saifizi Saidon
    ;
    Muhammad Izuan Fahmi Romli
    This article organized in two sections where it compares the performance of single-phase inverters using various types of inductors with differences modulation technique of pulse width modulation (PWM). Not all inductors perform the same function, even the inductance value is the same. The study will investigate the capability of each inductor on its performance to convert the unfiltered AC voltage into filtered sinusoidal AC voltage. The drum core and toroidal core inductors were used in this investigation. For both inductors, the performance will be analyzed based on Bipolar and Unipolar switching schemes in a single unit H-bridge circuit. The validation of results are through experimental assessment only and it will be evaluating the shape of sinusoidal AC voltage and the content of total harmonics distortion in the AC voltage for both inductors.
      2  2
  • Publication
    Performance Analysis of Modified Nine-level Inverter with SHEPWM using an Artificial Bee Colony Algorithm
    ( 2021-01-01)
    Mohd Hafiz Arshad
    ;
    Baharuddin Ismail
    ;
    Muhammad Zaid Aihsan
    ;
    Wan Azani Wan Mustafa
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Alfith R.H.C.
    This article presents a three-phase modified nine-level multilevel inverter using Artificial Bee Colony Algorithm (ABC) to remove the low order harmonics. Low order harmonics can be fully removed from the output voltage and current waveform by using the proper switching angles. The non-linear equations derived from the Fourier series of the output voltage and current waveform were used to compute the switching angles. The ABC was created specifically for the suggested reduced switch approach topology to solve the nonlinear equation and generate the required switching angles. Simulator tools such PSIM was used to model the circuit, and experimental results were used to evaluate it. The 5th, 7th, and 11th order harmonics will be eliminated, and two modulation indices will be compared, and their performance measured in terms of overall harmonic distortion. THD results will be shown for modulation indexes of 0.58 and 0.83.
      2  15
  • Publication
    Current Sensor Based on Planar Rogowski Coil
    ( 2021-01-01)
    Khalid K.A.
    ;
    Muhammad Izuan Fahmi Romli
    ;
    Ayob Nazmy Nanyan
    ;
    Muhammad Zaid Aihsan
    ;
    Wan Azani Wan Mustafa
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Alfilh R.H.C.
    This paper discusses the design and development of current sensor based on planar Rogowski Coil. A Rogowski coil is a toroid of wire used to measure an alternating current through a cable encircled by the toroid. The aim of this study is to design and develop planar Rogowski as a sensor for current measurement and detection using printed circuit board (PCB). The problem of this project is Rogowski Coil (RC) current sensor has same principle as Current Transformer, but the design is different, especially the RC is developed in PCB. Before starting in development of Rogowski Coil current sensor, a few studies are required to review past research on related topic to develop this project. The winding of Rogowski coil current sensor is design by using design software which is EasyEDA to achieve very good sensitivity for wide bandwidth range of frequency at the lowest cost. Finally, the prototype developed is experimented to get the result. The experimental results are discussed and evaluated regarding the performance of the prototype. The highest induced voltage that detected is 55.3 mV and the lowest induced voltage is 11.1mV. The design of Rogowski sensor is significantly shown the best performance of the current sensor in term of sensitivity and bandwidth.
      1
  • Publication
    Harmonic Analysis of Modified Nine-level Inverter with SHEPWM using Grey Wolf Optimization
    ( 2021-01-01)
    Mohd Hafiz Arshad
    ;
    Baharuddin Ismail
    ;
    Muhammad Zaid Aihsan
    ;
    Wan Azani Wan Mustafa
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Abo sinnee A.S.
    This paper presents the nine-level multilevel inverter with reduces switch technique using Grey Wolf Optimization (GWO) methods on eliminating the low order harmonics. Using the appropriate switching angles, the low order harmonics can be eliminated completely from the output voltage and current waveform. The switching angles were calculated using the non-linear equations derived from the Fourier series of the output voltage and current waveform. In this paper, GWO algorithm was developed to solve the nonlinear equation and generate the appropriate switching angles specifically for the proposed reduced switch technique topology. The circuit were simulated using PSIM and evaluate based on experimental assessments. The targeted low order harmonic to be eliminated are the 5th, 7th and 11th and two modulation indices will be compared and observed it performance in term of value of total harmonic distortion. The THD results for modulation indexes of 0.7 and 0.82 will be displayed. For modulation index 0.7, simulation yields 7.52% and experimental yields 6.23%. The simulation result for modulation index 0.82 is 5.82% and the experimental result is 4.69%.
      1
  • Publication
    Unbalanced Current Mitigation of Three-Phase Induction Motor for Electrical Vehicle (EV) Applications
    ( 2021-01-01)
    Muhammad Zaid Aihsan
    ;
    Azizan M.M.
    ;
    Muhammad Izuan Fahmi Romli
    ;
    Wan Azani Wan Mustafa
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Abosinne A.S.
    Electrical Vehicle (EV) is the new potential of vehicles that can solve the issues of current transportation such the air pollution, global warming, and the lack of oil supplies. However, this EV still addressed some technical problems such as unbalanced current injection to the drive motor system, especially the integrated Solar EV system. The unstable current generation from the PV system and the current injection to the drive system has many factors. One of the methods to stabilize the current trajectories in the system is by applying the closed-loop control of the Proportional Integral (PI) controller to gain feedback on non-sinusoidal current patterns in the system. The distorted current pattern can be resolved and compensate thru the fine PI tuning and improve the current pattern and resulting in a stable current injection and reduce the harmonic content supplied to the AC drive system. The operation and feasibility of the system is analyzed and validated through experimental results.
      1
  • Publication
    Selective Harmonic Elimination of Five Level Cascaded H-Bridge Inverter Using the Newton-Raphson Technique
    ( 2021-07-26)
    Mohd Saifizi Saidon
    ;
    Kasdi N.S.
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Mashagba H.A.
    ;
    Wan Azani Wan Mustafa
    ;
    Muhammad Zaid Aihsan
    ;
    Sulong Syahmi M.M.
    Multilevel inverter becomes an alternative for high power and medium voltage applications recently and is more popular in renewable energy. The cascaded H-bridge multilevel inverter is more suitable for the Photovoltaic application because it acts as a separate DC source for each bridge. This paper presents a selective harmonic elimination (SHE) modulation for single-phase cascaded H-bridge (CHB) five level inverter. The optimum angle of the transcendental equations is solved the fundamental and harmonic elements using the Newton-Raphson (NR) process. The proposed selective harmonic elimination (SHE) scheme is tested using MATLAB/Simulink simulation. These simulation results are then verified through experiment using microcontroller. The proposed SHE is efficient in eliminating the 5th order harmonics and producing a higher quality output waveform with a better harmonic profile.
      2  16
  • Publication
    Harmonic Analysis of Three-Phase Asymmetrical Multilevel Inverter with Reduced Number of Switches
    ( 2021-01-01)
    Muhammad Zaid Aihsan
    ;
    Baharuddin Ismail
    ;
    Rosnazri Ali
    ;
    Wan Azani Wan Mustafa
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Abosinnee A.S.
    This paper presents an analysis of a three-phase asymmetrical multilevel inverter towards resistive and inductive load testing. The asymmetrical multilevel inverter is chosen over the standard symmetrical multilevel inverter due to its circuit simplicity, cost-effectiveness and better performance as the topology offers a reduction in the number of switches and the improved Total Harmonic Distortion (THD). Whenever different levels of voltage are applied in an asymmetric cascaded H-bridge multilevel inverter, it will increase output voltage levels and reduces the harmonics. The selected topology is the cascaded H-bridge inverter with reduced number of switches and the modulation technique used in this paper intersects a single unit of a sine wave with three carrier signals to produce the PWM pulses for controlling the MOSFETs. The experiment was set up under a lab-scale and using the standard DC power supply. The experimental data for both resistive and inductive loads with modulation indexes of 0.7 and 0.9 are shown to verify the analysis. THD voltage and current are slightly higher for resistive loads than inductive loads. In addition, as the modulation index rises, the value of THD voltage and current decreases.
      1
  • Publication
    Design and Simulation of 2×1 and 2×2 Array Antenna at 5.8 GHz for Gain and Axial Ratio Enhancement
    ( 2021-01-01)
    Muhammad Zaid Aihsan
    ;
    Hariz M.F.
    ;
    Wan Azani Wan Mustafa
    ;
    Syed Zulkarnain Syed Idrus
    ;
    Hasliza A Rahim @ Samsuddin
    ;
    Alkhayyat A.
    A low gain and narrow bandwidth of single microstrip antenna element will not accomplish a good performance in wide applications. In this paper, the design and simulation of microstrip antenna with an arrays for gain enhancement were made. The suggested design is made up of four elements of microstrip antenna in rectangle shape which associated with an array pattern. The antenna is operating at 5.8 GHz. Each element is created with truncated-edge of rectangular shape which had an inclined slot on each patch which realize circular polarized capability. The design of the 2×1 and 2×2 of rectangular microstrip array antenna was implemented from the designed of single rectangular element of patch antenna as the basic building element. The designed 2×1 and 2×2 array were fed by microstrip transimmision line which applied a technique of quater wave impedance matching. The antenna design was etched on Rogers RT 5880 substrate which have dielectric constant of 2.2 and have a thickness of 1.53. All the designed structure were simulated in CST software. The proposed antenna finally will compared between both 2×1 and 2×2 design in terms of gain, axial ratio and reflection coefficient. The simulated antennas resonated exactly at the desired frequency of 5.8 GHz with reflection coefficient below than -10 dB which indicates good antenna designs. The 2×1 and 2×2 arrays obtained gain of 10.8 dB to 13.3 dB respectively. The results show that the proposed designed have an improved gain performance over the single patch antenna.
      1