An AVR is at the heart of devices often called power conditioners or power stabilizers. The typical power conditioner is an automatic voltage regulator combined with one or more other power-quality capabilities, such as: 1) Surge suppression 2) Short circuit protection (circuit breaker) 3) Line noise reduction 4) Phase-to-phase voltage balancing 5) Harmonic filtering, etc. Power conditioners are typically used in low voltage (<600V) applications and sizes below 2,000KVA. In general, the AC automatic voltage regulator ( AVR ) is a device designed to regulate voltage automatically – that is, to take a fluctuating voltage level and turn it into a constant voltage level. Working principle of AVR The voltage regulator is an adjustment device that controls the generator output voltage within a specified range. Its function is to automatically control the generator voltage and keep it constant when the rotating speed of the generator changes, so as to prevent the generator...
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