Electric power conversion systems – Current conversion – With voltage multiplication means
Reexamination Certificate
2008-03-28
2010-10-19
Sterrett, Jeffrey L (Department: 2838)
Electric power conversion systems
Current conversion
With voltage multiplication means
C363S043000, C363S071000, C363S131000
Reexamination Certificate
active
07817451
ABSTRACT:
A switchgear cell having a group of connection is disclosed, with the group of connection having a first and a second controllable bidirectional power semiconductor switch and a capacitor. In order to reduce the stored electrical energy and to save space, the group of connection can have a third, fourth, fifth and sixth controllable bidirectional power semiconductor switch and the first controllable bidirectional power semiconductor switch can be connected back-to-back in series with the second controllable bidirectional power semiconductor switch, the third controllable bidirectional power semiconductor switch can be connected back-to-back in series with the fourth controllable bidirectional power semiconductor switch, the capacitor can be 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 can be 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 can be 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.
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Barbosa Peter
Chaudhuri Toufann
Steimer Peter
ABB Research Ltd
Buchanan & Ingersoll & Rooney PC
Finch, III Fred E
Sterrett Jeffrey L
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