Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
246 words
A high-power grid-compatible converter-controlled, voltage-injecting phase-shifting transformer, comprising: a converter having an input side and an output side; an energizer transformer connected to said input side of said converter; a booster transformer having at least one phase connected to said output side of said converter; said converter having an excitation-side power converter with at least one phase intercoupled by a DC intermediate circuit to an output-side power converter with at least one phase, each of said excitation-side power converter and said output-side power converter having turnoff power semiconductors; each phase of said at least one phase of said excitation-side power converter having n double cascades electrically connected in series, each of said double cascades having a capacitive energy store with a terminal and two switching devices including said turnoff power semiconductors connected electrically in parallel with said capacitive energy store; each phase of said at least one phase of said output-side power converter having n four-quadrant controllers with AC voltage terminals and DC voltage terminals; and said booster transformer having n two-winding transformers per each phase of said at least one phase, a secondary side and a primary side, said two-winding transformers connected electrically in series on said secondary side and coupled in each case on said primary side to said AC voltage terminals of said four-quadrant controllers, and said DC voltage terminals of each of said four-quadrant controllers connected to said terminal of said capacitive energy store of a corresponding one of said double cascades.
Claim 2
Dependent Claim
246 words
A high-power grid-compatible converter-controlled, voltage-injecting phase-shifting transformer, comprising: a converter having an input side and an output side; an energizer transformer connected to said input side of said converter; a booster transformer having at least one phase connected to said output side of said converter; said converter having an excitation-side power converter with at least one phase intercoupled by a DC intermediate circuit to an output-side power converter with at least one phase, each of said excitation-side power converter and said output-side power converter having turnoff power semiconductors; each phase of said at least one phase of said excitation-side power converter having n double cascades electrically connected in series, each of said double cascades having a capacitive energy store with a terminal and two switching devices including said turnoff power semiconductors connected electrically in parallel with said capacitive energy store; each phase of said at least one phase of said output-side power converter having n four-quadrant controllers with AC voltage terminals and DC voltage terminals; and said booster transformer having n two-winding transformers per each phase of said at least one phase, a secondary side and a primary side, said two-winding transformers connected electrically in series on said secondary side and coupled in each case on said primary side to said AC voltage terminals of said four-quadrant controllers, and said DC voltage terminals of each of said four-quadrant controllers connected to said terminal of said capacitive energy store of a corresponding one of said double cascades.
Claim 3
Dependent Claim
39 words
The transformer according to claim 1, wherein each of said four-quadrant controllers have capacitors, and said capacitors of each of said four-quadrant controllers and said capacitive energy store of said corresponding one of said double cascades form a sub-assembly.
Claim 4
Dependent Claim
31 words
The transformer according to claim 1, wherein said n two-winding transformers of each phase of said at least one phase of said booster transformer are combined to form a transformer unit.
Claim 5
Dependent Claim
18 words
The transformer according to claim 3, wherein said transformer unit is a three-winding transformer having a five-limb core.
Claim 6
Dependent Claim
13 words
The transformer according to claim 1, wherein said switching devices are two-point modules.
Claim 7
Dependent Claim
13 words
The transformer according to claim 1, wherein said switching devices are three-point modules.
Claim 8
Dependent Claim
13 words
The transformer according to claim 1, wherein said switching devices are n-point modules.
Claim 9
Dependent Claim
36 words
The transformer according to claim 1, wherein said capacitive energy store has at least one capacitor and said switching devices have points, and a number said points determining a number of said at least one capacitor.