公开(公告)号：US09013905B2

公开(公告)日：2015-04-21

申请号：US14007274

申请日：2012-01-19

申请人： Qinggan Zeng ,  Bin Cao ,  Zhaowei Ma ,  Yingping Wang

发明人： Qinggan Zeng ,  Bin Cao ,  Zhaowei Ma ,  Yingping Wang

IPC分类号： H02M7/06 ,  H01F30/14 ,  H01F30/12 ,  H01F38/06 ,  H02P13/06

CPC分类号： H01F30/14 ,  H01F30/12 ,  H01F38/06 ,  H02M7/06 ,  H02P13/06

摘要： A three-phase 48-pulse rectifier transformer includes two 24-pulse rectifier transformers phase-shifted through valve-side output windings. Each 24-pulse rectifier transformer has two sets of grid-side input windings and four sets of valve-side output windings. The two sets of grid-side input windings are connected in parallel and axially arranged in a split manner. Among the four sets of valve-side output windings, two sets of valve-side output windings are radially arranged in a split manner corresponding to one set of grid-side input windings, and the other two sets of valve-side output windings are also radially arranged in a split manner corresponding to the other set of grid-side input windings. The two sets of valve-side output windings that are radially split and the other two sets of valve-side output windings that are radially split are axially arranged in a split manner. The grid-side input windings of the two 24-pulse rectifier transformers are phase-shifted with respect to each other. In this way, a uniform difference of 7.5° is produced in voltages of the eight sets of valve-side output windings of the two 24-pulse rectifier transformers, and the eight sets of valve-side output windings of the two 24-pulse rectifier transformers are correspondingly connected to rectifiers to form a uniform 48-pulse rectifier transformer, which not only reduces the harmonic current generated by the rectifier, but also improves the load capacity of the rectifier.

摘要翻译： 三相48脉冲整流变压器包括两个通过阀侧输出绕组相移的24脉冲整流变压器。 每个24脉冲整流变压器有两组电网侧输入绕组和四组阀侧输出绕组。 两组电网侧输入绕组并联连接并以分开的方式轴向布置。 在四组阀侧输出绕组中，两组阀侧输出绕组以对应于一组电网侧输入绕组的分开方式径向布置，另外两组阀侧输出绕组也是 以对应于另一组电网侧输入绕组的分开方式径向布置。 径向分离的两组阀侧输出绕组和径向分开的另外两组阀侧输出绕组以分开的方式轴向布置。 两个24脉冲整流变压器的电网侧输入绕组相对于彼此相移。 这样，在两个24脉冲整流变压器的八组阀侧输出绕组的电压中产生7.5°的均匀差，并且两个24脉冲整流器的八组阀侧输出绕组 变压器相应连接整流器，形成均匀的48脉冲整流变压器，不仅可以降低整流器产生的谐波电流，而且可以提高整流器的负载能力。

公开(公告)号：US20140015629A1

公开(公告)日：2014-01-16

申请号：US14007274

申请日：2012-01-19

申请人： Qinggan Zeng ,  Bin Cao ,  Zhaowei Ma ,  Yingping Wang

发明人： Qinggan Zeng ,  Bin Cao ,  Zhaowei Ma ,  Yingping Wang

IPC分类号： H01F30/14

CPC分类号： H01F30/14 ,  H01F30/12 ,  H01F38/06 ,  H02M7/06 ,  H02P13/06

摘要： A three-phase 48-pulse rectifier transformer consists of two 24-pulse rectifier transformers phase-shifted through valve-side output windings. Each 24-pulse rectifier transformer comprises two sets of grid-side input windings and four sets of valve-side output windings. The two sets of grid-side input windings are connected in parallel and axially arranged in a split manner. Among the four sets of valve-side output windings, two sets of valve-side output windings are radially arranged in a split manner corresponding to one set of grid-side input windings, and the other two sets of valve-side output windings are also radially arranged in a split manner corresponding to the other set of grid-side input windings. The two sets of valve-side output windings that are radially split and the other two sets of valve-side output windings that are radially split are axially arranged in a split manner. The grid-side input windings of the two 24-pulse rectifier transformers are phase-shifted with respect to each other. In this way, a uniform difference of 7.5° is produced in voltages of the eight sets of valve-side output windings of the two 24-pulse rectifier transformers, and the eight sets of valve-side output windings of the two 24-pulse rectifier transformers are correspondingly connected to rectifiers to form a uniform 48-pulse rectifier transformer, which not only reduces the harmonic current generated by the rectifier, but also improves the load capacity of the rectifier.

摘要翻译： 三相48脉冲整流变压器由两个通过阀侧输出绕组相移的24脉冲整流变压器组成。 每个24脉冲整流变压器包括两组电网侧输入绕组和四组阀侧输出绕组。 两组电网侧输入绕组并联连接并以分开的方式轴向布置。 在四组阀侧输出绕组中，两组阀侧输出绕组以对应于一组电网侧输入绕组的分开方式径向布置，另外两组阀侧输出绕组也是 以对应于另一组电网侧输入绕组的分开方式径向布置。 径向分离的两组阀侧输出绕组和径向分开的另外两组阀侧输出绕组以分开的方式轴向布置。 两个24脉冲整流变压器的电网侧输入绕组相对于彼此相移。 这样，在两个24脉冲整流变压器的八组阀侧输出绕组的电压中产生7.5°的均匀差，并且两个24脉冲整流器的八组阀侧输出绕组 变压器相应连接整流器，形成均匀的48脉冲整流变压器，不仅可以降低整流器产生的谐波电流，而且可以提高整流器的负载能力。