Design of Wide-Range Adaptive Glow Discharge High-Voltage Pulsed Power Supply Based on Buck-Boost Converter

Glow discharge cleaning is one of the most effective surface cleaning technologies, while it is also capable of generating numerous active substances to meet subsequent process requirements. However, traditional glow discharge cleaning power supplies have shortcomings such as a large disparity between ignition voltage and normal operating voltage, long response time for arc suppression, and poor load adaptability. This article proposes a wide-range adaptive output pulsed power supply, which consists of a Buck-Boost converter, a high-frequency full-bridge converter, and an IPOS-structured high-frequency transformer. The Buck-Boost converter is operated in step-up mode to achieve soft-start arc ignition, and normal operation is determined by impedance measurement, after which the Buck-Boost converter is operated in step-down mode to achieve load adaptability. The fast strong arc suppression technology enables rapid and reliable operation control. Simulation software was used to conduct simulation experiments on the proposed topology, and a power supply prototype was built and tested. The outputs of maximum voltage of 13 kV and power of 5 kW, it is suitable for a wide range of load requirements. Experimental data demonstrate the feasibility of this design method and its value in promotion and application.