As shown in figure "B" of the illustration, what is the purpose of the synchronous compensator? EL-0133

Correct Answer: Option D — provide reactive power to the mains as the frequency converter has the ability to provide only active power

Frequency converters inherently control active power conversion but lack inherent reactive power generation capabilities. A synchronous compensator, often running unloaded or as a synchronous condenser, supplies the necessary lagging or leading reactive power (VARs) to support system voltage and power factor.