Abstract: A method for operating a power converter as an inverter between a DC voltage and an AC voltage grid is disclosed. For each AC voltage phase of the AC voltage grid, the power converter has at least one half-bridge which is connected to the AC voltage phase and has two semiconductor switches. Each semiconductor switch is reversed-connected in parallel with a diode. An activation angle range is determined for each semiconductor switch within an angle period, the lower range limit of which activation angle range is formed by subtracting a pre-firing angle from the lower range limit of a switch angle range, and the upper range limit of which activation angle range is formed by subtracting a pre-extinction angle from the upper range limit of the switch angle range.

Abstract: A converter includes a housing having a first interior and a second interior. The first interior is arranged separately from the second interior. Part of the first interior protrudes into the second interior and forms a heat-exchanger duct. A gaseous heat flow circuit is established within the first interior and flows in through an inlet opening of the heat-exchanger duct and flows out through an outlet opening of the heat-exchanger duct. The second interior forms a cooling duct. A gaseous cooling flow flowing through the cooling duct is established and flows around the heat-exchanger duct. The cooling duct is arranged in a region of overlap with the heat-exchanger duct in such a way that a first flow direction of the gaseous heat flow circuit runs substantially perpendicularly or parallel to a second flow direction of the gaseous cooling flow.

Abstract: A converter unit has a main printed circuit board (MPCB) on which at least one functional module is arranged. By the functional module, at least one AC voltage supplied to the functional module via first power connections of the functional module can be converted into at least two DC voltage potentials output via second power connections. The MPCB has conductor paths via which control signals can be supplied to control connections, and the MPCB has conductor paths which extend from a control unit to first and second control connections of the MPCB and via which the first and second control signals can be supplied to the first and second control connections. The functional module is at least mechanically connected to the MPCB at least in the region of the first and second control connections such that the functional module does not use the first and/or the second control signals.

Abstract: A converter includes a housing having a first interior and a second interior. The first interior is arranged separately from the second interior. Part of the first interior protrudes into the second interior and forms a heat-exchanger duct. A gaseous heat flow circuit is established within the first interior and flows in through an inlet opening of the heat-exchanger duct and flows out through an outlet opening of the heat-exchanger duct. The second interior forms a cooling duct. A gaseous cooling flow flowing through the cooling duct is established and flows around the heat-exchanger duct. The cooling duct is arranged in a region of overlap with the heat-exchanger duct in such a way that a first flow direction of the gaseous heat flow circuit runs substantially perpendicularly or parallel to a second flow direction of the gaseous cooling flow.

Abstract: Apparatus for electrically connecting an electrical component to first and second busbars of different potential to one another during operation includes an insulation arranged between the first and second busbars and having first and second openings. The first busbar has a first busbar opening, intended as a first electrical connection, and a second busbar opening. The second busbar has a third busbar opening, intended as a second electrical connection, and a fourth busbar opening. The first opening of the insulation, the first busbar opening and the fourth busbar opening overlap, and the second opening of the insulation, the third busbar openings and the second busbar openings overlap. The insulation has a first boundary which demarcates the first insulation opening and projects into the fourth busbar opening of the second busbar, and a second boundary which demarcates the second opening and projects into the second busbar opening of the first busbar.

Abstract: Apparatus for electrically connecting an electrical component to first and second busbars of different potential to one another during operation includes an insulation arranged between the first and second busbars and having first and second openings. The first busbar has a first busbar opening, intended as a first electrical connection, and a second busbar opening. The second busbar has a third busbar opening, intended as a second electrical connection, and a fourth busbar opening. The first opening of the insulation, the first busbar opening and the fourth busbar opening overlap, and the second opening of the insulation, the third busbar openings and the second busbar openings overlap. The insulation has a first boundary which demarcates the first insulation opening and projects into the fourth busbar opening of the second busbar, and a second boundary which demarcates the second opening and projects into the second busbar opening of the first busbar.

Abstract: The invention is an optimized method for controlling a Vienna rectifier (10), comprising the following steps: on the basis of a characteristic vector—vector—a block (B1-B6) is selected from a plurality of blocks (B1-B6) in a space vector switching diagram for the Vienna rectifier (10), depending on the block (B1-B6) selected and its position in the space vector switching diagram, the vector is rotated through an offset angle according to the position of the block (B1-B6) in the space vector switching diagram, wherein the resulting angle of the rotated vector continues to be used as the normalized phase angle (?) and the block (B1) in which the rotated vector falls is designated the first block (B1), on the basis of the normalized phase angle (?), an upper or lower half of the first block (B1) is selected, on the basis of the absolute value of the normalized phase angle (?) and the vector, one of three area sections (F1-F3) of the block (B1) is selected in the first block (B1), on the basis of the area sect

Abstract: The invention is an optimized method for controlling a Vienna rectifier (10), comprising the following steps: on the basis of a characteristic vector—vector—a block (B1-B6) is selected from a plurality of blocks (B1-B6) in a space vector switching diagram for the Vienna rectifier (10), depending on the block (B1-B6) selected and its position in the space vector switching diagram, the vector is rotated through an offset angle according to the position of the block (B1-B6) in the space vector switching diagram, wherein the resulting angle of the rotated vector continues to be used as the normalized phase angle (?) and the block (B1) in which the rotated vector falls is designated the first block (B1), on the basis of the normalized phase angle (?), an upper or lower half of the first block (B1) is selected, on the basis of the absolute value of the normalized phase angle (?) and the vector, one of three area sections (F1-F3) of the block (B1) is selected in the first block (B1), on the basis of the area sect

Abstract: A method for operating an inverter and an inverter operating according to the method is disclosed, wherein the inverter is controlled in accordance with line-angle-specific control sets provided in a database, wherein a switchover from one control set to the next control set can be performed only in a direction of rotation of a space vector resulting from a respective line angle.

Abstract: A method for operating an inverter and an inverter operating according to the method is disclosed, wherein the inverter is controlled in accordance with line-angle-specific control sets provided in a database, wherein a switchover from one control set to the next control set can be performed only in a direction of rotation of a space vector resulting from a respective line angle.

Abstract: A method is disclosed for the regenerative operation of a drive control facility, which includes an inverter with semiconductor switches controllable by control signals. A control logic for each control signal determines a control signal time instant and each of the semiconductor switches is controlled by a corresponding control signal generated by the control logic at the respective control signal time instant. Individual semiconductor switches are controlled prior to the determined control signal time instant by a corresponding control signal having a predetermined pre-ignition angle.