Easy-to-Implement Integral Numerical Simulation of Multi-phase Drives under Fault Supply Condition

Abstract

-This paper presents an easy way to model multiphase electrical drives in fault supply conditions. The presented technique makes it possible to simulate the drive in various configurations with keeping the same integral model established in normal mode. Simulations of a seven-leg seven-phase drive are carried out and compared to experimental measurements.

Fault tolerant control of a seven-phase drive by degrees of freedom adaptation

“…This way of modelling makes possible to keep a unique model of the drive whatever the functioning mode (normal or open-circuited phases) [10]. Under classical assumptions and according to [10], the unique model of a seven-phase drive can be described by equations (1), (2) and (3):…”

Auto-adaptive fault tolerant control of a seven-phase drive

“…These controllers have an infinite gain at a given frequency and are then able to reject harmonic perturbations. Equation (10) gives the transfer function of current controllers C(s), which are able to track constant reference and reject several speed dependent harmonic perturbations. Ω is the mechanical speed estimated from the position encoder, p the number of pole pairs and phΩ the frequency of the disturbance to be rejected (h positive integer).…”