Patent ID: 9673724
Date: 2017-06-06
CPC Classifications: H02M

Claim:
1. A matrix converter connected to a first polyphase AC voltage grid and to a second polyphase AC voltage grid, the matrix converter comprising: first inductive circuit elements each connected to the first polyphase AC voltage grid; second inductive circuit elements each connected to the second polyphase AC voltage grid; a switching matrix connecting ends of said first inductive circuit elements being remote from the first polyphase AC voltage grid to ends of said second inductive circuit elements being remote from the second polyphase AC voltage grid, said switching matrix having controllable converter units with control inputs; a closed-loop controller connected to said control inputs of said controllable converter units, wherein current and voltage measured variables of the first and second polyphase AC voltage grids being applied to said closed-loop controller; said controllable converter units having first converter units, each of said first converter units are electrically connected with one of said first inductive circuit elements respectively, and said first converter units are electrically connected with a ground potential respectively, said first converter units being in each case a controllable AC voltage source; said controllable converter units having second converter units, each of said second converter units are electrically connected with one of said first inductive circuit elements respectively, and each of said second converter units are electrically connected with one of said second inductive circuit elements respectively, said second converter units being in each case a controllable AC voltage source; and said closed-loop controller connected to said control inputs of said first and second converter units such that electrical power flowing to said matrix converter is equal to the electrical power flowing out of said matrix converter.