Multi-phase current control using finite-state model-predictive control

FCS-MPC-Based Current Control of a Five-Phase Induction Motor and its Comparison with PI-PWM Control

“…Such a weighting factor has already been used in some works [4,8,9], but its value appears to have always been selected in an ad hoc manner. The only previous papers where the issue has been studied to some extent were purely based on simulations [4,11].…”

“…Previous MPC research in the multi-phase drive area predominantly relates to the closed-loop current control of a dual-three phase (asymmetrical sixphase) induction machine with two isolated neutral points. Stationary (α-β-x-y) current control, with only switching states that correspond to the largest voltage vectors (and zero vector), was studied experimentally in [4][5][6]. However, the impact of using only the reduced set of switching states is not analyzed in detail.…”

“…In [7,8], PWM was integrated into the FCS-MPC scheme(s) for the purposes of constant switching frequency and zeroing of average x-y voltages. The same group of switching states as in [4,5] was taken as the MPC's input set. A later work [9] has made an attempt to include all switching states in the MPC's optimization over a long time window.…”

The Asymmetrical Dual Three-Phase Induction Machine and the MBPC in the Speed Control

“…An appropriate decomposition allow to put more emphasis on harmonic reduction as will be shown in the case study for a six-phase motor drive [5,12]. The more relevant cost functions are shown in Table 1.…”

“…Model-based predictive control (MBPC) and multiphase drives have been explored together in [5,6], showing that predictive control can provide enhanced performance for multiphase drives. In [7,8], different variations of the predictive current control techniques are proposed to minimize the error between predicted and reference state variables, at the expense of increased switching frequency of the insulated-gate bipolar transistor (IGBTs).…”