对多种机型UPS同时存在状态的综合评述

叙及当前UPS类型有交流输出型的工频机型UPS和高频机型UPS（含模块化UPS）,还有直流输出型UPS、飞轮式和柴油机式动态型UPS,各有用户群体,各有市场份额,是UPS技术发展的＂过渡期状态＂。从当前来看,高频机型（含模块化）UPS是现代数据中心的优选机型。从长远来看,直流输出型UPS是技术发展的必然趋势。用户应当根据UPS技术发展和市场趋势来选择UPS机型。

Comprehensive Review of the Co-existence of Various Kinds of UPS

When it comes to the types of UPS, we have alternating current transmission power-frequency UPS, and high-frequency UPS（including modularized UPS）, as well as direct current transmission UPS, fly-wheel type and diesel-engine-typed dynamic UPS, and all have their target customers and market share, which could be seen as the ＂transmission state＂ in the development of UPS technology. Seen from the current situation, high-frequency UPS（including modularized UPS） is the preferential type in modem data center. From a long-term perspective, direct current transmission UPS is the ultimate trend of technology development. Users should choose UPS type according to UPS technology development and the market trend.