Patent ID: 6313599
Filing Date: 2001-11-06
Classification: H02M

Abstract:
A method for controlling an inverter which comprises the switching components to be controlled, the method comprising the steps ofdetermining a current vector for the inverter output;determining a flux vector for the inverter load;determining an angular speed for the inverter load;determining a resistance for the inverter load, wherein the method further comprises the steps ofdetermining a voltage vector as a sum of the product of the inverter load resistance and its output current vector and a voltage proportional to the electromotive force of the load;forming a direction vector on the basis of a current vector of the inverter reference value and the inverter output current vector;determining a space coordinate system .mu..nu. associated with the voltage vector and having a real axis .mu. which is co-directional with the voltage vector;determining the direction vector in the .mu..nu. coordinate system; andforming inverter switch commands on the basis of a direction vector component co-directional with the .mu. axis of the direction vector and a component co-directional with the .nu. axis.