Non-integral AC Capacitor Voltage Calculation Method for Shunt Hybrid Active Power Filter

This paper introduces a novel non-integral method for calculating AC capacitor voltage in shunt hybrid active power filters (SHAPFs). These commonly use passive (PPFs) that can introduce containing harmonics into the capacitor, leading to overvoltage situations be dangerous. To avoid accidents due overvoltage, it is necessary monitor continuously. The proposed enables calculation of across using only sensor available SHAPF, without requiring additional sensors. By avoiding integration calculate voltage, effectively mitigates errors DC offset inflows. effectiveness was verified through simulations and actual experiments. Results demonstrate improves accuracy by approximately 1.93[%] when compared general method. represents significant advancement SHAPFs, providing an effective means reducing risks, sensors or costly equipment.