公开(公告)号：US09413221B1

公开(公告)日：2016-08-09

申请号：US14096676

申请日：2013-12-04

Applicant: Google Inc.

Inventor： Sangsun Kim ,  Di Xu ,  Anand Ramesh

IPC: H02M5/45 ,  H02M1/32 ,  H02M5/458

CPC classification number: H02M1/32 ,  H02M5/225 ,  H02M5/4585 ,  H02M7/217 ,  H02M7/23

Abstract: A power conversion unit includes power converters arranged sequentially to each other to convert input power that is provided at an input of the power conversion unit to output power. A set of first capacitors are arranged in series with each other and include, for each power converter, a first capacitor that is arranged in parallel with an associated power converter. Each first capacitor is also arranged to store a portion of the input power. A set of second capacitors are connected in series with each other and include a second capacitor connected between each pair of sequential power converters in the sequence. The set of second capacitors are arranged to balance the portion of the input power stored by each first capacitor.

Abstract translation: 电力转换单元包括彼此顺序布置的电力转换器，以将设置在电力转换单元的输入端的输入电力转换成输出电力。 一组第一电容器彼此串联布置，并且对于每个功率转换器包括与相关联的功率转换器并联布置的第一电容器。 每个第一电容器还被布置成存储输入功率的一部分。 一组第二电容器彼此串联连接，并且包括连续在每对顺序功率转换器之间的第二电容器。 该组第二电容器被布置成平衡由每个第一电容器存储的输入功率的部分。