Mohamad ROSYIDI Ahmad

University of Kuala Lumpur | unikl · Malaysian Spanish Institute

Conventional vehicles emit carbon monoxide and nitro oxide during the engine combustion. These two gases are two major contributors toward pollution to the environment. Electric vehicles (EVs) and hybrid electric vehicles (HEVs) offer an alternative solution to the above mentioned scenarios. However the prices of AC drive EVs and HEVs vehicle are u...

Parallel mode operation is one of the modes of operation offered by New series motor four quadrants DC chopper for Electric Vehicles (EV). This paper is to study about the parallel mode and the focus is to reduce ripple current and ripple torque. Matlab/Simulink software is used to establish the system under study and the simulation results indicat...

Speech recognition technology is one of the quickly developing advanced technologies of engineering. It has various applications in different zones and offers potential points of interest. There is a correlation to pre-requirement for speech recognition and machine learning which is that grammar classification and a method for extraction phonemes f...

A series motor has two weaknesses which are overrun when running under load or the drastic speed drop when loaded. The parallel mode allows the series motor to overcome the condition motor speed drop when loaded. For maintaining the torque at its optimum, the field current needs to be controlled. This paper describes the gradient descend method to...

This paper presents the establishment of look-up table (LUT) for speed versus field current. LUT is necessary as an input reference for the close loop control of field current. The LUT was developed with the assistance of a genetic algorithm (GA). GA was used for optimization of the field current to maintain the motor torque for DC series motor run...

The widespread use of electric vehicles might mitigate some environmental issues related to global warming, hazardous gas emission and climate changing. At present, EVs which are mostly AC driven, are still not yet affordable by many. DC driven EVs are regarded as a cheaper alternative but more intensive research is required to improve their perfom...

In this study, we present our work on the application of palm oil ashes (POA) as backfill to be used in an earth grounding grid system. The backfill is implemented while considering certain high soil resistances in certain areas. In this project, we used POA as material as well as copper tape, aluminum tape, and galvanized steel as microgrids. The...

Traffic sign recognition can help the driver to make the right decision at the right time for safe driving. The realization of traffic sign recognition system usually divided into two stages: detection and classification, This paper presented an algorithm for detection of traffic sign using convert region of interest (ROI) polygon to region mask me...