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Automatic Voltage Regulator


Automatic voltage regulators or AVR are electronic tools used for maintaining voltage of the output terminal at a predetermined value. The voltage count is subjective to load and working temperature. The AVR controls the output by measuring the voltage of the coil that's generating power and comparing it to the established reference value. Upon finding any variation in these measurements, the voltage regulator fixes the volt counts to their expected figure. That is any sudden change in the alternator's load should be complemented by an equal excitation adjustment to balance off the load count.


The AVR is made of an all-copper base that is shielded and tapped over multiple times to guarantee a remote terminal transformer. It also contains separate converse electronic switches that are controlled independently. The autonomous control is responsible for the seven taps over each phase, providing strict voltage monitoring. The phase current is observed for zero current detection to initiate any needed switch change. A microprocessor installed inside the regulator controls the line synchronization. Line synchronization is monitored through linear devices that prevent any unusual or unstable power shift from occurring.


The primary function of an AVR in a generator is to stop the voltage fluctuations created during different conditions in the power load supply system. It basically takes the irregular voltage and converts it into a fixed power count. A severe and continuous variation gravely damages electronic equipment and also puts the house at risk of any serious hazard. Thus in order to control these variations, many generators comes equipped with transformers and power regulators. Below are a few important aspects of automated voltage regulators every generator buyer must know about as most of them come prefixed with AVRs.

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