公开(公告)号：WO2023272727A1

公开(公告)日：2023-01-05

申请号：PCT/CN2021/104299

申请日：2021-07-02

Applicant: ZHUZHOU CRRC TIMES ELECTRIC CO., LTD. ,  CRRC ZHUZHOU INSTITUTE CO., LTD.

Inventor： QI, Yu ,  MEI, Wenqing ,  LIU, Liangjie ,  DOU, Zechun ,  LIU, Xiong ,  XIE, Yuecheng ,  LIU, Bin

IPC: H02P5/74

Abstract: There is provided an electric traction system (1), comprising: a traction converter module (2) comprising: a positive input terminal (4) and a negative input terminal (6) for operatively coupling to a DC power supply, and a plurality of power inverters (11), each of which comprises positive and negative input nodes (3, 5) configured to receive DC power and output nodes (9) configured to supply AC power, wherein the positive and negative input nodes (3, 5) of the plurality of power inverters (11) are electrically connected in series between the positive input terminal (4) and the negative input terminal (6); and at least one electric motor (8) configured to be driven by the traction converter module (2), the at least one electric motor (8) comprising a multi-phase electric motor (81).

公开(公告)号：WO2022205654A1

公开(公告)日：2022-10-06

申请号：PCT/CN2021/104289

申请日：2021-07-02

Applicant: ZHUZHOU CRRC TIMES ELECTRIC CO., LTD. ,  CRRC ZHUZHOU INSTITUTE CO., LTD.

Inventor： QI, Yu ,  MEI, Wenqing ,  LIU, Liangjie ,  DOU, Zechun ,  LIU, Xiong ,  XIE, Yuecheng ,  LIU, Bin

IPC: H02M1/00 ,  H02M5/40 ,  B60L3/00 ,  B60L9/28 ,  H02M5/00 ,  B60L7/14 ,  H02K17/12

Abstract: There is provided an electric traction system (1), comprising: a step-down transformer (35) comprising a primary winding (36) for operatively coupling to an AC power supply (40) and a secondary winding (37) which is inductively coupled to the primary winding (36); a traction converter module (2) comprising a first input terminal (4) and a second input terminal (6) which are operatively coupled to the secondary winding (37), and a plurality of AC-to-AC power converters (11), each of which comprises first and second input nodes (3, 5) configured to receive AC power and output nodes (9) configured to supply AC power, wherein the first and second input nodes (3, 5) of the plurality of AC-to-AC power converters (11) are electrically connected in series between the first input terminal (4) and the second input terminal (6); and at least one electric motor (25) configured to be driven by the traction converter module (2).