Design of Dielectric Barrier Discharge Plasma Power Supply System Based on Zero-Voltage Switching Control Strategy

To address the issues of high switching losses in power devices and device temperature rise caused by hard switching in conventional plasma power supplies, this study presents a dielectric barrier discharge plasma power supply system based on a zero-voltage switching (ZVS) control strategy. First, the design of the plasma power supply input module, the plasma drive control board, the high-frequency transformer, and the dielectric barrier discharge load is presented. Next, a phase-shifted full-bridge topology simulation model based on the ZVS control strategy is developed using PLECS, and the optimal combination of parameters—including duty cycle, phase shift, resonant inductance, and dead time—is discussed. Subsequently, experimental tests are conducted on the dielectric barrier discharge plasma power supply system, with analyses focusing on the soft-switching waveforms of the power devices under the ZVS control strategy and the performance of the dielectric barrier discharge plasma generator load. Experimental results demonstrate that within the proposed system, the plasma exhibits a uniform distribution. Furthermore, junction temperature measurements of the power devices on the circuit board using a temperature tester show that the temperature rise remains within a reasonable range, thereby validating the feasibility of the designed dielectric barrier discharge plasma power supply system.