Implementation of Controls to a Synchronous Machine (Simulation using MATLAB)

Exhibitor: Jun Ho Kenneth, Mun

Supervisor: Allan Walton

Research Group: Complex and Intelligent Systems

Industry Sector: Energy and Utilities

This thesis introduced the modeling of controls (Speed governor and AVR) to a synchronous machine through simulation using MATLAB. The modeling of the synchronous machines will be similar to the ones in the machine laboratory. The simulation model will enable an easier understanding of how the actual machines in the laboratory works.

It comprises the background review of the synchronous machine with a DC motor providing the mechanical power to the synchronous generator. A speed governor and automatic voltage regulator (AVR) are the controls for the DC motor and synchronous generator respectively. The governor controls the speed of the DC motor while the AVR controls the output voltages of the synchronous generator.

The thesis covered the how the governor and the AVR controls the speed and voltage when there is a sudden change on load. Simulated results using MATLAB to show the response of the parameters of the torque, speed, mechanical power and the terminal voltages are proves to show the controls are actually effective. These parameters will change accordingly when the load has been changed. The controls will then stabilize the transient and make sure the machines goes to steady state and resume normal operations.

Lastly, discussion of the results obtain from the simulation will provide a good understanding of how the machines behave with the sudden change of state, from steady state to a sudden drop or increase in power drawn by the loads.

Thesis Document (PDF)