基于双变压器多电平高压高频DBD电源

High-voltage High-frequency DBD Power Supply Based on Dual Transformer Multilevel

为了满足等离子体处理废水时对高压高频交流电源的需求,设计了一种基于双变压器多电平高压高频交流DBD电源。该电源采用多电平技术,从而减小谐波含量和对滤波电感的需求。电路中双变压器使用原边并联、副边串联的连接方式,不仅实现多电平输出,同时减少2个开关管。双变压器使用可减小单个变压器尺寸,分担运行功率,实现高压输出与低压输入的电气隔离。仿真和实验结果证明了该结构的可行性。

In order to meet the demands of high-voltage high-frequency AC power supply in the treatment of waste water by plasma,a multi-level dielectric barrier discharges(DBD)power supply based on two transformers was designed.The multi-level technology was employed in the proposed topology to reduce the harmonic contents and the needs for filters inductors.Two transformers which were connected in parallel in the primary side while in series in the secondary side.Not only multilevel output was achieved,but also the use of two switches was reduced.The adopted two transformer could reduce the size of one single transformer and divide the operating power.The simulation and experimental results show that the structure is feasible.