How many Power Supply Controllers (PSC) are needed for four generators?

The correct answer is two Power Supply Controllers (PSC) for four generators. This configuration allows for efficient management of the power output and load distribution among the generators. When designing a power system with multiple generators, redundancy and reliability are key considerations.

Using two PSCs provides a balanced system where if one controller were to fail, the other could take over, ensuring continuous power availability. Additionally, two controllers can efficiently manage the synchronization of the generators and allow for better control of load sharing. This setup can also prevent issues that may arise from having too many generators controlled by a single unit, as it increases the likelihood of failure and can lead to system inefficiencies.

A single controller for four generators could become a bottleneck and complicate load management, while three would be excessive and unnecessary for the provided load requirement. Thus, having two PSCs strikes an optimal balance between redundancy and cost, ensuring that power distribution remains effective even in the event of a controller failure.