Year 2022

• Critical Review on Robust Speed Control Techniques for Permanent Magnet Synchronous Motor (PMSM) Speed Regulation

  Publication

  • K. Ullah
  • J. Guziński (formerly: J. Guzinski)
  • A. Mirza

  - ENERGIES - Year 2022

  The permanent magnet synchronous motor (PMSM) is a highly efficient energy saving machine. Due to its simple structural characteristics, good heat radiation capability, and high efficiency, PMSMs are gradually replacing AC induction motors in many industrial applications. The PMSM has a nonlinear system and lies on parameters that differ over time with complex high-class dynamics. To achieve the excessive performance operation...

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Year 2021

• Engineering Challenges in the Design of Cochlear Implants

  Publication

  • K. Ullah
  • M. Ishaq

  - Year 2021

  Hearing aids such as cochlear implants have been used by both adults and children for a long time. In addition, cochlear implants are used by patients who have severe hearing loss either by birth or after an accident. This paper aims to investigate the engineering challenges bounding the design of cochlear implants and present its possible solution...

• Fuzzy Based Maximum Power Point Tracking (MPPT) Control System for Photovoltaic Power Generation System

  Publication

  • K. Ullah

  - Year 2021

• Reconfigurable Dual Active Bridge (DAB) Converter Topology for Aircraft Application System

  Publication

  • K. Ullah

  - Year 2021

• Switching Regulation in the Control of 5-Phase Permanent Magnet Synchronous Motor Fed by 3×5 Direct Matrix Converter

  Publication

  • K. Ullah

  - Year 2021

  Matrix converter is an AC-AC direct power converter comprising of an array of bi- directional switches. It does not require an intermediate DC-link and allows sinusoidal output waveforms with varying amplitudes and frequencies. The configuration of these bi- directional switches decides the number of inputs and outputs...

Year 2020

• Image Segmentation of MRI image for Brain Tumor Detection

  Publication

  • K. Ullah

  - Year 2020

  this research work presents a new technique for brain tumor detection by the combination of Watershed algorithm with Fuzzy K-means and Fuzzy C-means (KIFCM) clustering. The MATLAB based proposed simulation model is used to improve the computational simplicity, noise sensitivities, and accuracy rate of segmentation, detection and extraction from MR...

• Photovoltaic Maximum Power Point Technique based on Incremental Conductance (INCON) control algorithm

  Publication

  • K. Ullah

  - Year 2020

  Maximum output power status can significantly improve the deployment rate of solar energy system. In order to get the maximum power output, issue of tracking maximum power point (MPP), reduced harmonics around MPP and improve efficiency of the solar power energy system, this paper presents the improved maximum power point tracking (MPPT) control...

Year 2019

• Maximum Power Point Technique (MPPT) for PV System Based on Improved Pert and Observe (P&O) Method with PI Controller

  Publication

  • K. Ullah

  - Year 2019

  Photovoltaic power generation system has key rule in electricity production. Although, it is clean renewable energy with unlimited resources but it has some drawbacks in efficiency. In order to maximize the efficiency, PV array must drive at maximum power point. For the reason so, several algorithms are used in PV system to track MPP and reduce the...