A Utility-friendly Battery Charging Infrastructure for Powering EV's and Wireless Communication

拟议研究的目标是开发考虑到公用事业需求的电池充电方法：统一的运行功率因数，低电磁干扰（EMI）和高能效。在电源和电池组之间应有电隔离。此外，还应满足通常要求的高可靠性、低成本和小尺寸。针对上述要求，本文提出了两种新型转换器拓扑结构作为研究基础。它们都使用高频变压器进行隔离。第一种拓扑使用单级整流器将三相交流转换为可调节（可控）的de输出。第二种拓扑结构更为通用，用于从一个直流电压电平转换到另一个直流电压电平。

ECS-9800130 Mohan The objective of the proposed research is to develop battery charging methods which take into account the needs of the utility: unity power factor of operation, low electromagnetic interference (EMI), and high energy efficiency. There should be electrical isolation between the utility source and the battery bank. In addition, the usual requirements of high reliability, low cost and small size should also be met. In view of the above requirements, two novel converter topologies are proposed as the basis for research. Both of them make use of high-frequency transformers for isolation. The first topology uses a single-stage rectifier to convert three-phase ac into regulated (controllable) de output. The second topology is more general, for conversion from one dc voltage level to another.