公开(公告)号：US07813153B2

公开(公告)日：2010-10-12

申请号：US12221082

申请日：2008-07-31

申请人： Peter Zacharias ,  Jens Friebe ,  Felix Blumenstein ,  Ann-Katrin Gerlach ,  Jan Scheuermann ,  Matthias Zin

发明人： Peter Zacharias ,  Jens Friebe ,  Felix Blumenstein ,  Ann-Katrin Gerlach ,  Jan Scheuermann ,  Matthias Zin

IPC分类号： H02M7/538 ,  H02M7/5387

CPC分类号： H02M7/5387 ,  H02M3/158

摘要： An inverter (1) for feeding electric power into a utility grid (7) or into a load is described. The inverter (1) contains direct voltage inputs (2, 3), one first intermediate circuit (8) connected thereto and comprising two series connected capacitors (C1, C2) that are connected together at a ground terminal (14), two alternating voltage outputs (5, 6) of which one at least is provided with a grid choke (L1) and one bridge section (10). In accordance with the invention, the inverter (1) contains only two switches (S1, S2), which are disposed in the bridge section (10) and are to be switched at high frequency, as well as, between the first intermediate circuit (8) and the bridge section (10), a second intermediate circuit (9) that is devised at least for selectively boosting or bucking the direct voltage and intended for supplying said bridge section (10) with positive and negative voltage, said second intermediate circuit comprising an internal freewheeling (D5, D6) for maintaining the currents flowing through the grid choke (L1) in opposite directions.

摘要翻译： 描述了用于将电力馈送到公用电网（7）或负载中的逆变器（1）。 逆变器（1）包括直流电压输入（2,3），连接到其上的一个第一中间电路（8），并且包括在接地端子（14）处连接在一起的两个串联电容器（C1，C2），两个交流电压 输出（5,6），其中至少一个具有栅格扼流圈（L1）和一个桥接部分（10）。 根据本发明，逆变器（1）仅包含两个开关（S1，S2），它们设置在桥接部分（10）中，并且要以高频率以及第一中间电路 8）和桥接部分（10），第二中间电路（9），其设计为至少用于选择性地升压或降压直流电压并且用于向所述桥接部分（10）提供正和负电压，所述第二中间电路 包括用于保持沿相反方向流过栅格电抗器（L1）的电流的内部续流（D5，D6）。