公开(公告)号：US09356536B2

公开(公告)日：2016-05-31

申请号：US13739517

申请日：2013-01-11

Applicant: ABB Research Ltd.

Inventor： Sandeep Bala ,  Joseph A. Carr

IPC: H02M1/32 ,  H02M7/483 ,  H02M7/487

CPC classification number: H02M7/483 ,  H02M1/32 ,  H02M7/487 ,  H02M2001/325 ,  H02M2007/4835 ,  Y02B70/126

Abstract: A power conversion system includes a unipolar bidirectional power converter with DC terminals and a first controller, and a bipolar bidirectional power converter with DC terminals connected in series with the DC terminals of the unipolar bidirectional power converter and a second controller. The first controller is operable to cause only a positive-valued DC voltage across the DC terminals. The second controller is operable to cause a positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter so that a total voltage of the power conversion system is the sum of the positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter and the positive-valued DC voltage across the DC terminals of the unipolar bidirectional power converter.

Abstract translation: 电力转换系统包括具有直流端子和第一控制器的单极双向功率转换器，以及具有与单极双向功率转换器的直流端子串联连接的直流端子的双极双向功率转换器和第二控制器。 第一控制器可操作以仅在直流端子上引起正值的直流电压。 第二控制器可操作以在双极双向功率转换器的DC端子两端产生正值或负值的DC电压，使得功率转换系统的总电压为正值或负值DC 双极双向功率转换器的直流端子两端的电压以及单极双向功率转换器的直流端子两端的正值直流电压。

公开(公告)号：US20140198533A1

公开(公告)日：2014-07-17

申请号：US13739517

申请日：2013-01-11

Applicant: ABB RESEARCH LTD.

Inventor： Sandeep Bala ,  Joseph A. Carr

IPC: H02M3/335

CPC classification number: H02M7/483 ,  H02M1/32 ,  H02M7/487 ,  H02M2001/325 ,  H02M2007/4835 ,  Y02B70/126

Abstract: A power conversion system includes a unipolar bidirectional power converter with DC terminals and a first controller, and a bipolar bidirectional power converter with DC terminals connected in series with the DC terminals of the unipolar bidirectional power converter and a second controller. The first controller is operable to cause only a positive-valued DC voltage across the DC terminals. The second controller is operable to cause a positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter so that a total voltage of the power conversion system is the sum of the positive-valued or negative-valued DC voltage across the DC terminals of the bipolar bidirectional power converter and the positive-valued DC voltage across the DC terminals of the unipolar bidirectional power converter.

Abstract translation: 电力转换系统包括具有直流端子和第一控制器的单极双向功率转换器，以及具有与单极双向功率转换器的直流端子串联连接的直流端子的双极双向功率转换器和第二控制器。 第一控制器可操作以仅在直流端子上引起正值的直流电压。 第二控制器可操作以在双极双向功率转换器的DC端子两端产生正值或负值的DC电压，使得功率转换系统的总电压为正值或负值DC 双极双向功率转换器的直流端子两端的电压以及单极双向功率转换器的直流端子两端的正值直流电压。