Tirrill regulator
The Tirrill regulator is a two-point regulator for keeping constant or regulating the output voltage of alternating or three-phase generators . It is named after the American electrical engineer Allen Augustus Tirrill (1872–1925).
functionality
The Tirrill regulator intervenes in the generator's excitation circuit . In principle, it consists of two contacts which, when closed, bridge a resistance in the excitation circuit. If the resistor is bridged, a large excitation current flows and the generator voltage increases. If one of the two contacts now opens, the resistance is in the excitation circuit and reduces the excitation; the generator voltage drops. The regulated output voltage fluctuates around an average value. The contacts usually switch five to seven times per second.
Coil systems
The two contacts are controlled mechanically via levers and iron cores of plunger coils .
- One of the coil systems monitors the generator voltage. The moving coil is controlled via a series resistor which generates a current proportional to the voltage. The iron core keeps itself in equilibrium with the electromagnet force , a change causes the lever to tilt.
- The second coil system is controlled by the excitation voltage. If the excitation is too high, the iron core is attracted so that the second contact opens the bypass of the excitation resistance according to the same principle as the first contact.
The second contact often also has a spring. The "generator voltage contact" is often equipped with oil damping that determines the time behavior of the controller.
literature
- The quick control properties of the Tirrill controller in Electrical Engineering (archive for electrical engineering) , Verlag Springer Berlin / Heidelberg, ISSN 0948-7921
Web links
Individual evidence
- ↑ AEG-Hilfbuch , Verlag W. Girardet, Essen 1960, Chapter 9 / Part 12-14