PRODUCTION OF A REAL POWER EQUILIBRIUM OF THE PHASE MODULES OF A CONVERTER

摘要

Converter with at least one phase module (2a, 2b, 2c), which has an AC vo ltage terminal (3/1, 3/2, 3/3) and at least one DC voltage terminal (p, n), wherein a phase module branch (6p1, 6p2, 6p3, Sn1, 6n2, 6n3) is formed betwe en each DC voltage terminal and each AC voltage terminal, and wherein each p hase module branch has a series circuit comprising submodules (7) which each have a capacitor (8) and at least one power semiconductor (T1, T2), with su bmodule sensors for detecting an energy stored in the capacitor (8) and with regulation means (9) for regulating the apparatus (1) as a function of the energy store energy values and predetermined desired values. In this case, u nbalanced loading of the energy stores (8) of the said modules (7) is avoide d. The regulation means (9) have a summation unit for summing the energy sto re energy values Uc whilst obtaining branch energy actual values (Uc sum p1, ...Uc sum n3) and means for calculating the circuit current desired values a s a function of the branch energy actual values, wherein the regulation mean s (9) are set up to compensate for imbalances in the branch energy actual va lues as a function of the circuit current desired values.