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US 2014/0369094 A1Published application
Converter cell and associated converter arm and method
AssigneeABB Technology AG
InventorFalah Hosini
Life of this patent
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Abstract
It is presented a converter cell comprising: a first terminal and a second terminal; an energy storage device connected on a first end to the second terminal; a first switch connected on a first end to the first terminal; a second switch arranged between the two terminals; and a third switch connected between a second end of the first switch and a second end of the energy storage device. A corresponding converter arm and method are also presented.
Claims21
1-15. (canceled)
A converter cell comprising:
- a first terminal and a second terminal;
- an energy storage device connected on a first end to the second terminal;
- a first switch connected on a first end to the first terminal;
- a second switch arranged between the two terminals;
- and
- a third switch connected between a second end of the first switch and a second end of the energy storage device,
- wherein the converter cell is arranged to open the third switch when the second switch has failed into an open circuit or a short circuit.
4 more elements
A method for controlling a converter cell comprising a first terminal and a second terminal;
- an energy storage device connected on a first end to the second terminal;
- a first switch connected on a first end to the first terminal;
- a second switch arranged between the two terminals;
- and a third switch connected between a second end of the first switch and a second end of the energy storage device, the method comprising the step of:
- when the second switch has failed into a short circuit or into an open circuit, opening the third switch.
2 more elements
Dependencies are inferred from the claim text.