Intermediate voltage circuit current converter in five-point topology
First Claim
1. Intermediate voltage circuit current converter apparatus comprising:
- two current converter sections connected in series with each other on the direct voltage side of the apparatus;
two bridge modules in each current converter section, each bridge module having at least two power semiconductor units connected in series with each other;
a respective intermediate potential output connection point located on the series connection between the two power semiconductor units in each bridge module;
a capacitor in each current converter section, said capacitor being connected in parallel with the two bridge modules that are connected in series with each other in each current converter section;
a respective intermediate potential output connection point located on the series connection between the two bridge modules in each current converter section;
a further capacitor electrically connecting the intermediate potential outputs of the two bridge modules in each current converter section;
a further bridge module connecting the output connection points of the two current converter sections to one another; and
a phase output connection point of the intermediate voltage circuit current converter located on the series connection between the two power semiconductor units in the further bridge module,wherein the power semiconductors of the power semiconductor unit are disconnectable power semiconductors of the IGBT and/or IGCT type.
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Accused Products
Abstract
An intermediate voltage circuit current converter having two current converter sections arranged in series on the direct voltage side is disclosed. The current converter section has a capacitor connected in parallel with two bridge modules that are connected in series with each other. The output of the current converter section is located on the series connection between the two bridge modules and the outputs of the two current converter sections are connected to a further bridge module. Each bridge modules comprises a series connection of two power semiconductor units. The intermediate potentials on the connection between the two power semiconductor units in each of the bridge modules are electrically connected to one another by a further capacitor, and the intermediate potential of the further bridge module provides the phase connection of the intermediate voltage circuit current converter for a given phase of the intermediate voltage circuit current converter.
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Citations
9 Claims
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1. Intermediate voltage circuit current converter apparatus comprising:
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two current converter sections connected in series with each other on the direct voltage side of the apparatus; two bridge modules in each current converter section, each bridge module having at least two power semiconductor units connected in series with each other; a respective intermediate potential output connection point located on the series connection between the two power semiconductor units in each bridge module; a capacitor in each current converter section, said capacitor being connected in parallel with the two bridge modules that are connected in series with each other in each current converter section; a respective intermediate potential output connection point located on the series connection between the two bridge modules in each current converter section; a further capacitor electrically connecting the intermediate potential outputs of the two bridge modules in each current converter section; a further bridge module connecting the output connection points of the two current converter sections to one another; and a phase output connection point of the intermediate voltage circuit current converter located on the series connection between the two power semiconductor units in the further bridge module, wherein the power semiconductors of the power semiconductor unit are disconnectable power semiconductors of the IGBT and/or IGCT type. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification