POWER BALANCING DEVICE, OPERATING METHOD THEREOF AND RELEVANT RACK-BASED POWER SYSTEM

A rack-based power system is used to supply power to a server through a power busbar, and includes a power shelf and a power balancing device. The power shelf is used to receive an input power and provides an output current to the power busbar so that the power busbar accordingly transmits a system current to supply power to the server. The power balancing device receives a bus voltage signal from the power busbar. When a falling rate of the busbar voltage signal exceeds a discharging voltage threshold, the power balancing device provides a first adjustment current to the power busbar. When a rising rate of the busbar voltage signal exceeds a charging voltage threshold, the power balancing device receives a third adjustment current from the power busbar.