Supply line, supply system and method for operating an electric drive

摘要

An electrical supply line for operating a first electric motor includes a first converter for supplying electric energy to the first electric motor in dependence of a first control variable, a connected network connecting the first converter to a DC voltage source, an oscillation suppression controller for generating first correction information, and a first correction module for generating the first control variable by taking into consideration an operating parameter of the first electric motor and by taking into consideration the first correction information. An electrical supply system includes two of the supply lines. A corresponding method for operating an electric drive is also described.

主权项

1. An electrical supply line for operating a first electric motor, the supply line comprising:
a first converter for supplying electric energy to the first electric motor depending on a first control variable; a connected network connecting the first converter to a DC voltage source; an oscillation suppression controller for generating a first correction information from a voltage and a current supplied to the first converter via the connected network, and a first correction module receiving at a first input from a first motor controller a first raw control variable representing a first operating parameter of the first electric motor and receiving at a second input from the oscillation suppression controller the first correction information, wherein the first correction module adds the first raw control variable and the first correction information by vector addition and generates therefrom the first control variable.