摘要
为优化大气压介质阻挡放电表面处理效果,提出了一种向放电负载注入断续电流实现能量压缩的方法。根据负载介质等效电容在放电和不放电阶段的不同形成机理,对传统负载模型的介质电容进行拆分,建立了一种分段负载模型及其参数测量方法。然后,利用断续电流模式谐振变换器的状态运行轨迹,并结合分段负载模型,推导出了谐振电感对有效放电时间的控制函数。最后,搭建了一台350 W谐振电源样机进行实验,实验结果表明:分段负载模型比传统负载模型更准确地描述了负载有效放电时间和能量压缩特性;通过调节断续电流模式谐振变换器的谐振电感,在功率为250 W和350 W、频率为20~40 kHz范围内实现了可控的能量压缩;在各个能量密度和工作频率下,被处理材料的表面亲水性随有效放电时间的缩短而增强。
We proposed an energy compression technique that the discontinuous current was injected into the load to optimize the atmospheric-pressure dielectric-barrier-discharge surface treatment effects. By exploring the different formation mechanisms of the dielectric capacitances during the discharge and the non-discharge, the single dielectric equivalent capacitance in the traditional load model was split.And then, a piecewise load model and a measurement method of the piecewise model parameters were established. Furthermore, by employing the state trajectory of the discontinuous-current-mode resonant converter with the piecewise load model, the effective discharge time was expressed as a function of the resonant inductance. Finally, following conclusions can be drawn by the experimental results from a 350 W prototype. The piecewise load model describes the effective discharge time and the energy compression characteristics of the loads more accurately than the traditional load model. The active-controlled energy compression is realized by adjusting the resonant inductance of the discontinuous-current-mode resonant converter at the powers of 250 W and 350 W and in the frequency range of 20~40 k Hz. The surface hydrophilicity of the treated materials is enhanced with the reduction of the effective discharge time at different energy densities and frequencies.
作者
郝世强
刘星亮
李武华
何湘宁
HAO Shiqiang;LIU Xingliang;LI Wuhua;HE Xiangning(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2018年第9期3058-3067,共10页
High Voltage Engineering
基金
国家自然科学基金重大项目(51490682)
浙江省自然科学基金“杰出青年基金”项目(LR16E070001)~~
关键词
介质阻挡放电
表面处理
分段负载模型
断续模式
能量压缩
dielectric barrier discharge
surface treatment
piecewise load model
discontinuous current mode
energy compression