Discussion on Key Technology for Localization of Full-chain of Dry DC Capacitor
High-performance film capacitor is used widely in such fields as new energy transportation vehicles,transmission and transformation engineering,medical treatment equipment,and electromagnetic pulse weapons,among which dry DC capacitor is an important equipment for flexible DC transmission.At present,the production process of film capacitor relies entirely on foreign technology from raw materials to equipment,and ultra-clean polypropylene(PP)raw materialsfor high-end film capacitor is entirely imported abroad.Moreover,such large production equipment as biaxially stretched BOPP films and electrode evaporation plating are purchased from developed countries,which seriously restricts the research and engineering application of film capacitor in China,which brings many hidden dangers especially in the current international environment.Once foreign countries prohibit the sale of raw materials and equipment to China,it will seriously affect our development of in high-tech field.Therefore,in the context of current international environment and the"dual carbon"goal proposed by the Chinese government,great efforts must be made to address the multiple key factors affecting the development of film capacitor,and rely on independent technology to serve the construction of new energy systems.Under the support of the National Key Research and Development Project"Dielectric Film Materials for Dry DC Capacitor",the technical breakthrough of PP raw material is performed staring from the ultra-clean PP raw material for film capacitor and deep cooperation between research institutes of related fileds and related enterprises to solve the problems that exist in the research process.From a global perspective,we aim to solve the major problems faced by the engineering application of dry DC capacitors in China,forming key technology for the full-chain localization of dry DC capacitor in China.
dry DC capacitorsultra-clean polypropylenebiaxially stretched BOPP filmelectrode evap-oration platingdesign and testing on capacitor