| 摘要 |
The invention relates to a device (1) for compensating harmonics occurring in current flows in a high-voltage network (4), having a passive filter (2) and a controllable voltage source (3), which can be connected in parallel connection to the high-voltage network (3) via the passive filter (2), a supply voltage sensor for detecting at the device (1) a supply voltage UAF dropping with respect to earth potential, a regulator unit (18) that calculates a regulator controlled voltage variable uh,m as a function of a harmonic to be compensated, and an actuating means (19) that is connected to the regulator unit (18) and generates actuating signals for the controllable voltage source as a function of a controlled voltage variable uh provided at the output side by the regulator unit (18), so that the controllable voltage source (3) provides a controlled voltage uH that drives a filter current iAF to suppress the detected harmonic. To allow a stable, highly dynamic control of the harmonic compensation by means of such a device, the invention proposes that the regulator unit (18) comprises a signal filter (23) for removing a supply-frequency component from the supply voltage UAF and addition means (16) that is designed to add the filtered supply voltage UAF,f and the modelled manipulated variable component uh,m. |
