Patent ID: 8242753

Claim:
A method of limiting a current in a double-fed asynchronous machine having an active power and a reactive power using reference values for the active power and the reactive power comprising the steps of: calculating maximum permissible power reference values for the active power and the reactive power such that a predetermined maximum permissible limit value of the current is not exceeded during operation of the double-fed asynchronous machine, using a predetermined maximum permissible limit value of the current and a model of the asynchronous machine and providing a power priority for the calculated maximum permissible power reference values, said active and reactive powers being either input powers or output powers; and regulating the active power and the reactive power so that the calculated maximum permissible power reference values are not exceeded, said calculation step providing active power priority by determining the maximum permissible reference value of the active power and determining the maximum permissible reference value of the reactive power using the maximum permissible reference value of the active power, said calculation step providing reactive power priority by determining the maximum permissible reference value of the reactive power and determining the maximum permissible reference value of the active power using the maximum permissible reference value of the reactive power.