Method of Controlling an Electric Motor and Control System for an Electric Motor

Abstract

A method of controlling an electric motor includes: storing, in a microcontroller, a first weight matrix calculated to transform an arbitrary set of multi-phase variables of any shape to equivalent quadrature-direct (Q-D) reference frame components, such that the Q-D reference frame components appear as dc signals in steady state, the first weight matrix being a function of a reference frame angle in the Q-D reference frame; calculating, by the microcontroller, a second weight matrix from the first weight matrix and a constant matrix, the second weight matrix being a function of the reference frame angle; and commutating winding currents in the electric motor based on the second weight matrix. A corresponding control system for an electric motor is also described.

Dependencies are inferred from the claim text.