Apparatus for converting an electrical current and method for reducing the load-change stress of power semiconductor units in the region of the high-voltage energy distribution and - transmission

摘要

A device (1) for converting an electrical current in the region of the high-voltage energy distribution and - transmission with at least one power converter valve (2a, 2b), which, by way of a series connection of power semiconductor units, and with cooling means (3, 4, 5, 7) for cooling the power semiconductor units, with which when the power semiconductor units can be reduced at low cost, it is proposed that the coolant (3, 4, 5, 7) via control means and which have a from the flow of current by way of the power semiconductor units, which is dependent upon cooling providing.