目前,普通计算机的电源效率仅在70%左右,这方面的电源能效提升潜力很大,已成为业界关注和攻克的一个焦点。例如,2004年,在美国启动并由Ecos Consulting管理的“80 PLUS”要求计算机电源在20%、50%和80%负载条件下都达到80%甚至更高的工作效率,并且具有0.9或更高的功率因数。而要想实现这些目标,需要以系统的途径来提高电源能效,即提升电源工作效率、降低待机能耗并提升功率因数。 At present, the power efficiency of ordinary computers is only about 70%, which has great potential for energy efficiency improvement and has become a focus of attention and capture by the industry. For example, the “80 PLUS”, launched in the United States and managed by Ecos Consulting in 2004, required computer power to reach 80% or greater efficiency at 20%, 50%, and 80% load, with 0.9 or Higher power factor. Achieving these goals requires a systematic approach to improving power efficiency by increasing power efficiency, reducing standby power consumption, and increasing power factor.