Control system for AVR and Governor of Synchronous Machine

Exhibitor: Daniel Lau

Supervisor: Allan Walton

Research Group: Complex and Intelligent Systems

Industry Sector: Energy and Utilities

In the control of synchronous machines excitation and speed, automatic voltage regulators (AVRs) and speed governor have been used for many years. AVRs and the governor have evolved from the early electromechanical (Analogue) types to the solid state (Digital) types found most commonly in service today.

This thesis concerns itself primarily with the development of control circuitry and algorithms using such digital micro-controllers. Development includes complete design and physical realization of measurement and control circuitry needed for speed and voltage control of the UQ ITEE lab machine connected to a resistive loading bank. The control algorithm implemented here uses fuzzy logic which offers PID type of control. The measured signal is being processed with the logic and subsequent set points signal is then being output to the thyristor firing controller.

This thesis also explores many advantages of digital control such as easier processing, transmission and recording of information. Example such as having the ability to display it measure values on a personal computer.

Thesis Document (PDF)

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