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Commonly used terms in the Electrical industry.
automatic voltage regulator (AVR)
an automatic feedback control system that is responsible for maintaining a scheduled voltage either at the terminals of a synchronous generator or at the high-side bus of the generator step-up transformer. The control is brought about by changing the level of excitation.
current regulator
a device used to control the magnitude and phase of the current in DC, AC or other electrical variable speed drives. May use different control strategies like hysteresis current control or ramp comparison current control.
induction regulator
See
induction voltage transformer
regulator
a controller designed to maintain the state of the controlled variable at a constant value, despite fluctuations of the load.
static VAR regulator
also called a static VAR compensator. A nonrotating electrical device designed to adjust the reactive power flow of an AC power system. It typically consists of a reactive load (either inductive or capacitive) and a series electronic switch (thyristor) that controls the reactive power.
thyristor-controlled phase angle regulator
a phase shifting device used in transmission systems. The phase angle change is brought about by thyristor-based control.
voltage regulator
similar to a voltage reference, but provides more output current at a less precisely controlled voltage. Primarily used to "clean up" (regulate) a varying input voltage to provide circuitry with a constant power supply voltage.