Virtual Voltage Vector-Based Model Predictive Current Control for Five-Phase Induction Motor

Abstract

The high-performance control technology of multi-phase motors is a key technology for the application of multi-phase motors in many fields, such as electric transportation. The model predictive current control (MPCC) strategy has been extended to multi-phase systems due to its high dynamic performance. Model-predictive current control faces the problem that it cannot effectively regulate harmonic plane currents, and thus cannot obtain high-quality current waveforms because only one switching state is applied in a sampling period. To solve this problem, this paper uses the virtual vector-based MPCC to select the optimal virtual vector and apply it under the premise that the average value of the harmonic plane voltage in a single switching cycle is zero. Taking a five-phase induction motor as an example, the steady-state and dynamic performance of the proposed virtual vector MPCC and the traditional model predictive current control were simulated, respectively. Simulation results demonstrated the effectiveness of the proposed method in improving waveform quality while maintaining excellent dynamic performance.

Special Issue on “Modeling, Analysis and Control Processes of New Energy Power Systems”

“…Fu et al [10] proposed a double-layer fault diagnosis model for the main bearing of a wind turbine that combines the auxiliary classifier generation adversarial network and the deep residual shrinkage network. Zhang et al [11] used the virtual vector-based model predictive current control to select the optimal virtual vector and apply it to five-phase induction motors. Liu et al [12] proposed a predictive commutation failure suppression strategy considering multiple harmonics of commutation voltage considering the distortion characteristics of AC voltage of HVDC systems.…”

A Method to Design Assembling Lines for Super Premium Efficiency Motors

“…• reduction of losses (in the stator winding, in the stator core, but also for slip losses in the rotor); • according to [5,6], solutions will be sought such as the copper windings will have a higher profile (deeper notches in the stator or rotor core), thinner (below 0.5 mm), and steel sheets will be used better for the core (Fe + C + Si alloy sheets obtained by more special laminations); • at the same time, the gap will be reduced, and the induced reaction (inherently increased by reducing the distance between the stator and the rotor) will be improved by specific methods (providing damping bars for rotors with visible poles or designing pole pieces for those with buried poles, or through other more innovative methods) [7]; • special attention will be paid to self-ventilation through redesign and simulation with specialized software [8];…”