ENGINEERING PROJECT

Matlab/Simulink Program

5:35 PM

Energy Conversion

Posted by Shahrul

DC machines are one of the most commonly used machines for electromechanical energy conversion. Converters which are used continuously to convert electrical input to mechanical output or vice versa are called electric machines. An electric machine is therefore a link between an electrical system and a mechanical system. In these machines, the conversion is reversible. If the conversion is from mechanical to electrical, the machine is said to act as a generator. If the conversion is from electrical to mechanical, the machine is said to act as a motor. Therefore, the same electric machine can be made to operate as a generator as well as a motor.[2]

DC machines may also work as brakes. The brake mode is a generator action but with the electrical power either regenerated or dissipated within the machine system, thus developing a mechanical braking effect. It also converts some electrical or mechanical energy to heat, but this is undesired.

The major advantages of DC machines are easy speed and torque regulation. The major parts of any machine are the stationary component called the stator and the rotating component is called the rotor.

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Electric machines play an important role in industry as well as our day to day life. They are used to generate electrical power in power plants and provide mechanical work in industries. They are also an indispensable part of our daily lives. Electric machines are very important pieces of equipment in our everyday lives. The DC machine is considered to be basic electric machines.

The aim of this final year project is to introduce students to the modeling of power components and to use computer simulation as a tool for conducting transient and control studies. Simulation can be very helpful in gaining insights to the dynamic behavior and interactions that are often not readily apparent from reading theory. Simulation is often chosen by engineers to study transient and control performance or to test conceptual designs.

MATLAB/SIMULINK is used because of the short learning curve that most students require to start using it, its wide distribution, and its general purpose of nature. This will demonstrate the advantages of using MATLAB for analyzing power system steady-state behavior and its capabilities for simulating transients in power systems and power electronics, including control system dynamic behavior