Converter device and uninterruptible power supply equipped with one such device
First Claim
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1. A converter device enabling electric voltage levels available on a first, second and third voltage line of a first type to be transformed into a voltage on a voltage line of a second type, in either direction, said device comprising:
- a first main switching unit connected to said first voltage line of the first type and equipped with a first main switch,a second main switching unit connected to said second voltage line of the first type and equipped with a second main switch,a main switching point connected to said voltage line of the second type and connected to said first and said second main switching unit, anda third main switch common to said first and to said second main switching unit, said third main switch being connected between said main switching point and the third voltage line of the first type, comprising;
a first, second and third capacitor connected between said main switching point and respectively said first, said second and said third voltage line of the first type,a first auxiliary switching unit connected between the first voltage line of the first type, the second voltage line of the first type, and a first auxiliary switching point,a second auxiliary switching unit connected between the first voltage line of the first type, the second voltage line of the first type, the third voltage line of the first type and a second auxiliary switching point, anda transformer equipped with windings provided with two free ends and with two ends connected to a common point, said common point being connected to said main switching point, the two free ends being respectively connected to said first point and said second auxiliary switching point.
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Abstract
A three-level reversible converter comprising two main switching units respectively equipped with a first and second main switch, a main switching point, and a third main switch common to the two main switching units, comprising:
- capacitors connected between said main switching point and said three levels,
- a first two-level auxiliary switching unit connected to a first auxiliary switching point,
- a second three-level auxiliary switching unit connected to a second auxiliary switching point, and
- a transformer equipped with windings connected between the main switching point and the auxiliary switching points.
An uninterruptible power supply provided with this converter.
12 Citations
14 Claims
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1. A converter device enabling electric voltage levels available on a first, second and third voltage line of a first type to be transformed into a voltage on a voltage line of a second type, in either direction, said device comprising:
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a first main switching unit connected to said first voltage line of the first type and equipped with a first main switch, a second main switching unit connected to said second voltage line of the first type and equipped with a second main switch, a main switching point connected to said voltage line of the second type and connected to said first and said second main switching unit, and a third main switch common to said first and to said second main switching unit, said third main switch being connected between said main switching point and the third voltage line of the first type, comprising; a first, second and third capacitor connected between said main switching point and respectively said first, said second and said third voltage line of the first type, a first auxiliary switching unit connected between the first voltage line of the first type, the second voltage line of the first type, and a first auxiliary switching point, a second auxiliary switching unit connected between the first voltage line of the first type, the second voltage line of the first type, the third voltage line of the first type and a second auxiliary switching point, and a transformer equipped with windings provided with two free ends and with two ends connected to a common point, said common point being connected to said main switching point, the two free ends being respectively connected to said first point and said second auxiliary switching point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification