MATRIX INVERTER AND METHOD FOR GENERATING AN A.C. VOLTAGE IN A SECOND A.C. VOLTAGE NETWORK FROM AN A.C. VOLTAGE IN A FIRST A.C. VOLTAGE NETWORK BY MEANS OF A MATRIX INVERTER

摘要

The invention relates to a matrix inverter (MU), which is connected to a first and a second multi-phase A.C. voltage network (N1, N2). First inductive circuit elements (Su1, Sv1, Sw1) are respectively connected to the first A.C. voltage network (N1) and second inductive circuit elements (Su2, Sv2, Sw2) are respectively connected to the second A.C. voltage network (N2). A switch matrix (MA) connects the ends (Eu1, Ev1, Ew1) of the first inductive circuit elements (Su1, Sv1, Sw1), which ends face away from the first A.C. voltage network (N1), to the ends (Eu2, Ev2, Ew2) of the second inductive circuit elements (Su2, Sv2, Sw2), which ends face away from the second A.C. voltage network (N2), wherein the switch matrix (MA) consists of controllable inverter units (Uu1, Uv1, Uw1; Uu2, Uv2, Uw2). A regulation arrangement (R) is connected to control inputs of the controllable inverter units (Uu1, Uv1, Uw1; Uu2, Uv2, Uw2), wherein current and voltage measurement variables of the first and second A.C. voltage networks (N1, N2) are applied to the regulation arrangement (R). In order to be able to produce such a matrix inverter (MU) cost-effectively, in a matrix inverter (MU) having a first inverter unit (Uu1, Uv1, Uw1), which is arranged between the ends (u1, Ev1, Ew1) of the first inductive circuit elements (Slu1, Sv1, Sw1), which ends face away from the first A.C. voltage network (N1) and earth potential (M) and is configured as a controllable A.C. voltage source, and having a second inverter unit (Uu1, Uv1, Uw1), which is connected between the ends (Eu1, Ev1, Ew1) of the first inductive circuit elements (Su1, Sv1, Sw1), which ends face away from the first A.C. voltage network (N1), and the ends (u2, Ev2, Ew2) of the second inductive circuit elements (Su2, Sv2, Sw2), which ends face away from the second A.C. voltage network (N2), and is configured as a controllable A.C. voltage source, the inverter units (Uu1, Uv1, Uw1; Uu2, Uv2, Uw2) are controlled by means of the regulation arrangement (R) in such a manner that the electrical power flowing to the matrix inverter (MU) is equal to the electrical power flowing out of the matrix inverter (MU). The invention also relates to a method for generating an A.C. voltage by means of a matrix inverter (MU).