METHOD AND DEVICE FOR CONTROLLING A ROTATING ELECTRICAL MACHINE BY PWM SIGNALS, AND CORRESPONDING ELECTRICAL MACHINE OF A MOTOR VEHICLE

摘要

The method according to the invention relates to the control of an electrical machine (1) by PWM signals (C) of the type where the PWM signals are sampled at a variable sampling frequency (Fpwm). According to the invention, a step of calculating the PWM signals at a predetermined fixed calculation frequency (Fcal), a step of writing the PWM signals in a register (11), and a step of rereading the PWM signals in the register at the sampling frequency (Fpwm) are performed successively. According to one particular embodiment, the calculation is a determination of the control vectors of a vector pulse-width modulation.