公开(公告)号：US09391503B2

公开(公告)日：2016-07-12

申请号：US14508467

申请日：2014-10-07

Applicant: ABB Oy

Inventor： Ki-Bum Park ,  Sami Pettersson ,  Francisco Canales

IPC: H02M5/45 ,  H02M1/32 ,  H02H7/12 ,  H02H7/122 ,  H02H7/125 ,  H02M5/42 ,  H02M5/458

CPC classification number: H02M1/32 ,  H02H7/1216 ,  H02H7/1225 ,  H02H7/1255 ,  H02M5/42 ,  H02M5/4585

Abstract: A converter circuit with short-circuit protection can include a plurality of phase legs having a series connection of normally-on switches, between voltage rails of a DC voltage link, a DC link capacitor, and AC voltage connection points between the normally-on switches. A phase-to-phase short-circuit protection circuit includes a parallel connection of a resistive component and a controllable switch. The phase-to-phase short-circuit protection circuit including a first terminal connected to an AC voltage connection point and a second terminal forms an input or an output of the converter circuit; and a controllable switch is connected in series with the DC link capacitor. Upon lack of control of the normally-on switches the controllable switch of the at least one phase-to-phase short-circuit protection circuit and the controllable switch of the phase leg short-circuit protection circuit are adapted to be controlled to a non-conductive state.

Abstract translation: 具有短路保护的A转换器电路可以包括多个相位支路，其具有常开开关的串联连接，直流电压链路的电压轨道，直流链路电容器和常开开关之间的交流电压连接点 。 相间短路保护电路包括电阻元件和可控开关的并联连接。 包括连接到AC电压连接点的第一端子和第二端子的相间短路保护电路形成转换器电路的输入或输出; 并且可控开关与DC链路电容器串联连接。 由于缺少常开开关的控制，所述至少一个相间短路保护电路的可控开关和相桥脚短路保护电路的可控开关适于被控制为非相位短路保护电路， 导电状态。