Electrical system and a method of controlling an operating voltage of an electrical system

Abstract

A method of controlling an operating voltage of an electrical system for supplying electrical power to a load and an electrical system for supplying electrical power to a load are described herein. The method comprises charging an energy storage unit using electrical power at a predetermined voltage, wherein the energy storage unit comprises a capacitor; removing the operating voltage; and discharging the energy storage unit across a fixed load. The method further comprises monitoring a discharge voltage across the fixed load over a period of time; determining a time constant of the energy storage unit based on the monitored discharge voltage; and comparing the time constant to a threshold value. If the time constant is higher than the threshold value, the method comprises decreasing the operating voltage. If the time constant is lower than the threshold value, the method comprises increasing the operating voltage. In this way, the hold-up time of the capacitor may be dynamically adjusted according to a determined capacitance of the capacitor.

Dependencies are inferred from the claim text.