A Low-Ripple High-Voltage DC Power Supply Using a Switching Ripple Compensation Unit

High-voltage DC power supplies (HVDCPSs) have become a highly interesting research field because HVDCPSs have wide industrial applications. Elimination of the ripple is essential in most HVDCPSs, due to the sensitivity of the loads to the output voltage stability. This article outlines the development of an HVDCPS with reduced output voltage ripple. One effective approach for achieving this is to incorporate a ripple compensation unit into the power supply design. Efficiency is one of the issues with linear compensation units; hence, this paper proposes switching ripple compensation unit (SRCU). According to the equations calculated in this paper, the load of the SRCU acts as a current source destabilizing the converter. Thus appropriate controller is designed to stabilize the SRCU. The simulation and experimental results verify the power supply’s ability to reduce output voltage ripple and maintain stable output voltage.