Control Device And Method For Controlling An Electric Machine

摘要

A control device for controlling an electric machine with ks windings on a stator and kr windings on a rotor, where ks+kr=n and either ks or kr may be zero, includes an input for receiving commands, an output for outputting control commands to a driver, machine modeling means for modeling behavior of the machine, and decision means connected to the input, output, and machine modeling means for determining the driver control commands. The machine modeling means models behavior of the machine through functional mapping suited for correlating sets of values of electrical and mechanical quantities, sets of values of their total or partial derivatives and/or integral functions with one another. The functional mapping includes an algorithm and/or equation based on at least one state function associated with the electromagnetic field inside the machine and/or based on at least one partial derivative of the state function.

主权项

1. A control device for controlling and/or identifying in real-time an electric machine with ks windings on a stator and kr windings on a rotor, wherein ks+kr=n and wherein either one of ks and kr may be zero, the control device comprising:
at least one input via which control commands are capable of being received and at least one output via which control commands to a driver of the electric machine are capable of being output; machine modeling means provided for modeling in real-time the behavior of the electric machine; and decision means operatively connected to the input, the output, and the machine modeling means and provided for determining in real-time the control commands to be output to the driver of the electric machine based on input control commands and results from the real-time modeling of the behavior of the electric machine, and outputting in real-time the determined control commands at the output, wherein the machine modeling means is provided for modeling the behavior of the electrical machine through at least one functional mapping suited for correlating sets of values of electrical and mechanical quantities and/or sets of values of their total or partial derivatives, and/or integral functions with one another, and said electrical and mechanical quantities are selected from the group consisting of winding currents, winding voltages, magnetic fluxes, mechanical displacements, electromagnetic torques and forces, characterized in that said functional mapping comprises at least one algorithm or mathematical equation based on at least one state function associated with the electromagnetic field inside the electrical machine or based on at least one partial derivative of said state function, and the state function model is a model based on the coenergy or energy associated with the electromagnetic field inside the electric machine.