Patent ID: 7817451
Filing Date: 2010-10-19
Classification: H02M

Abstract:
1. A switchgear cell comprising: a group of connections, with the group of connections having a first and a second controllable bidirectional power semiconductor switch and a capacitor, wherein the group of connections has a third, fourth, fifth and sixth controllable bidirectional power semiconductor switch and the first controllable bidirectional power semiconductor switch is connected back-to-back in series with the second controllable bidirectional power semiconductor switch, the third controllable bidirectional power semiconductor switch is connected back-to-back in series with the fourth controllable bidirectional power switch, the capacitor is connected to the connection point of the first controllable bidirectional power semiconductor switch to the second controllable bidirectional power semiconductor switch and to the connection point of the third controllable bidirectional power semiconductor switch to the fourth controllable bidirectional power semiconductor switch, the fifth controllable bidirectional power semiconductor switch is connected to the connection point of the first controllable bidirectional power semiconductor switch to the second controllable bidirectional power semiconductor switch, and to the fourth controllable bidirectional power semiconductor switch, and the sixth controllable bidirectional power semiconductor switch is connected to the connection point of the third controllable bidirectional power semiconductor switch to the fourth controllable bidirectional power semiconductor switch and to the second controllable bidirectional power semiconductor switch, wherein a first capacitative energy store and a second capacitive energy store, which is connected in series with the first capacitive energy store are provided, and wherein the first controllable bidirectional power semiconductor switch and the third controllable bidirectional power semiconductor switch are connected to one another at the connection point of the first capacitive energy store to the second capacitive energy store.