公开(公告)号：US09520810B2

公开(公告)日：2016-12-13

申请号：US14799566

申请日：2015-07-14

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yan Li ,  Qinglong Zhong ,  Senlin Wen ,  Guangcheng Hu

IPC: H05K7/02 ,  H02M7/487 ,  H02M7/797 ,  H02M7/00 ,  H05K7/20

CPC classification number: H02M7/797 ,  H02M7/487

Abstract: Provided are a three-level power converter and a power unit thereof. The power unit includes a power switch module and a laminated busbar structure. The power switch module includes a first power semiconductor switch module and a clamping diode module, which have a first, second, and third terminal respectively. The laminated busbar structure includes a third, second, and first busbar layer laminated on the power switch module. The third busbar layer includes a first sub-busbar connecting to the first terminal of the first power semiconductor switch module, a second sub-busbar connecting to the third terminal of the first power semiconductor switch module and the first terminal of the clamping diode module, a third sub-busbar connecting to the second terminal of the clamping diode module and the third terminal of the second power semiconductor switch module, and a fourth sub-busbar connecting to the second terminal of the second power semiconductor switch module.

Abstract translation: 提供三电平电力转换器及其功率单元。 电源单元包括电源开关模块和层叠母线结构。 电源开关模块包括分别具有第一，第二和第三端子的第一功率半导体开关模块和钳位二极管模块。 叠层母线结构包括层压在功率开关模块上的第三，第二和第一母线层。 第三母线层包括连接到第一功率半导体开关模块的第一端子的第一副母线，连接到第一功率半导体开关模块的第三端子和钳位二极管模块的第一端子的第二子母线， 连接到钳位二极管模块的第二端子和第二功率半导体开关模块的第三端子的第三副母线以及连接到第二功率半导体开关模块的第二端子的第四子母线。