基于串并联处理的新型单相UPS的IA服务器系统应用

Novel Single-Phase UPS for IA Server Systems Based on Series Parallel Processing

这里设计了一种基于采用串并联处理观点的新型UPS(不间断电源)。不像传统的串并联电路,传统的电路中变压器调节源电压;而这种新的方法允许不使用串联变压器而对电源电压调节。它还高效,不仅体积和重量小,并且转换效率也改进了。我们命名它双重一转换方法,而且我们现在正在向把它应用于IA服务器系统的发展方向工作。测试模型的下列性能并不次于全时逆变器UPS,包含以下指标:电源电压范围;±25%或者±20%,电源中断转换时间;Oms,输出电压精度;±3%,此外,转换效率95%,比全时逆变器UPS高5%,完成了700VA/350W单机型。设备的损失很小。因为绝缘的串联变压器没有使用工频,处于工业世界一流的1U和2U的高度只有了19英寸,容量分别为1400VA和3000VA。

We have developed a new UPS （uninterruptible power supply） based on a concept adopting series-parallel processing. Unlike conventional series-parallel circuits, to which a transformer is generally added to adjust supply voltage, the new method allows the adjustment of mains voltage without using a series transformer. It is also effective not only for the reduction in size and weight of the equipment but also for the improvement of conversion efficiency. We named it Dual-Conversion method and we are now working toward the development of products targeting at IA server systems. A prototype was tested and the following performance, which is not inferior to full-time inverter UPS, was obtained： mains voltage range; ±25% or ±20%, switching time at power interruption; 0 ms, output voltage accuracy; ±3%. Furthermore, conversion efficiency of 95%, 5% higher than the full-time inverter UPS, has been achieved with 700VA/350W standalone equipment. The loss of the equipment is small. Since insulated series transformer adopting commercial frequency is not used, the height of IU and 2U, the top class in the industry, has been achieved with 19-inch rack type 1400VA and 3000VA equipment respectively.