WITH this editorial, we sincerely welcome our readers to the brand-new publication — CPSS Transactions on Power Electronics and Applications(CPSS TPEA). It is sponsored and published by China Power Supply Society (CPSS) and technically co-sponsored by IEEE Power Elec-tronics Society(IEEE PELS). CPSS was founded in 1983 and has been the only top-lev-el national academic society in China that solely focuses on the power supply/power electronics area. In the past 30-plus years CPSS has dedicated to provide to its members, researchers, and industry engineers nationwide with high quality services including conferences, technical training, and various publications, and this in deed has helped the so-ciety build up its membership rapidly, which now totals up to more than 4000 individual members plus 500 enterprise members. The fast growth of membership in turn compels CPSS to always work out better services for its members, one of which being the open-up of this periodical — a new journal in English language as a publication platform for in-ternational academic exchanging. This of course needs to be done through international cooperation, and that’s why IEEE PELS is tightly involved, being the premier international ac-ademic organization in power electronics area and one of the fastest growing technical societies of the Institute of Electri-cal and Electronics Engineers(IEEE). To fulfill the p ublishin g need of the fast-develo p in g p ow-er electronics technology worldwide is a more important purpose of launching this new journal. So far there are only 3 or 4 existing journals which are concentrated on power electronics field and have g lobal re p utation. For q uite a few years people in the international power electronics com-munity have had the feeling that, the existing journals have not even come close to meeting the huge demand of global academic and technology exchanges. E.g., the two existing IEEE power electronics journals, i.e. IEEE Transactions on Power Electronics(IEEE TPEL) and IEEE Journal of Emerging and Selected Topics in Power Electronics(IEEE JESTPE), now publish about 1000 papers a year, which is under a very low paper acceptance rate of around 25%, but still have a back-log of about one year for the newly accept- ed p a p e r s to finall y a pp ea r in p rinted f o rm to the p ub li c . Th e addition of this new dedicated journal would be an ideal im- p r ove m e nt to f u lfill suc h a tre m e n dous n eed . The booming of publishing need really is an indicator of how fast power electronics has been developing in recent years. Innovations have been continuously coming up from component(both active device and passive device), module, circuit, converter, to system level, covering different tech-nical aspects as topology or structure conceiving, modeling and analysis, control and design, and measurement and testing. New issues and corresponding solutions have been continuously presenting as the applications of power elec-tronics prevail horizontally in almost every area and corner of human society, from industry, residence and commerce, to transportations, and penetrate vertically through every stage of electric energy flow from generation, transmission and distribution, to utilization, in either a public power grid or a stand-alone power system. I personally believe that we are entering a world with “more electronic” power systems. The prediction around 30 years ago, that power electronics one day will become one of the major poles supporting the human society, is coming into reality. And I also believe, that power electronics is going to last for long time as an import-ant topic since it is one of the keys to answer a basic ques-tion for human society, which is how human can harness energy more effectively and in a manner friendlier to both the user and the environment. Therefore, I assume that there is probabl y no better fitting as for CPSS TPEA to pub lish its first few issues under a spe-cial topic about the developing trends of power electronics. We have invited a group of leading experts in different areas of power electronics to write survey/review papers or special papers with review/overview nature to some extent. To pub-lish in a timely and regular style, we organize this inaugural Special Issue into different parts. Part 1 was published in the December issue last year, Part 2 appears in this March issue, and the following parts are scheduled for the next issues.