Brush and brushless excitation of a synchronous generator using a thyristor-magnetic amplifier regulator. Research report
A new method was developed for the regulation and excitation of an experimental 25kVA generator, using a combination of a thyristor bridge and a magnetic amplifier. The separately excited field of the exciter machine was controlled by a full wave single-phase or 3-phase bridge circuit with the exciter armature current controlled by a single pulse magnetic amplifier. The system was operated in linear or non-linear modes, associated with steady state and dynamic operation respectively, and compared with a simulated power system with corresponding performance obtained using a Goldington regulator. A good correlation was obtained between conventional Goldington operation and linear operation for steady state conditions. Nonlinear operation using the new regulator gave better results for transient performance. The system was satisfactory for supporting the thermal voltage and increasing the transient stability of a generator. Maximum improvement of transient stability was obtained when the bridge delay angle was between 60 degrees and 80 degrees for load switching angles in the region of 30 degrees to 45 degrees.
- Research Organization:
- Bradford Univ. (UK). Postgraduate School of Electrical and Electronic Engineering
- OSTI ID:
- 5594197
- Report Number(s):
- PB-83-255216
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRIC GENERATORS
EXCITATION
VOLTAGE REGULATORS
ELECTRIC BRIDGES
MAGNETIC AMPLIFIERS
MATHEMATICAL MODELS
PERFORMANCE
THYRISTORS
AMPLIFIERS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
SEMICONDUCTOR DEVICES
420800* - Engineering- Electronic Circuits & Devices- (-1989)