What function does a voltage regulator serve in a generator?

A voltage regulator in a generator plays a critical role by controlling the output voltage, ensuring it remains within specific limits. This is achieved by adjusting the current flowing through the generator's field windings. By changing the resistance of the generator field circuit, the voltage regulator can increase or decrease the strength of the magnetic field generated by the rotor, which directly influences the voltage output of the generator.

Maintaining the correct voltage is essential for the proper functioning of electrical equipment connected to the generator, as fluctuations can lead to inefficiency or damage. Thus, the ability to dynamically regulate voltage in real-time is a fundamental function of the voltage regulator, making it indispensable for stable and reliable power generation.