Predictive-Fixed Switching Current Control Strategy Applied to Six-Phase Induction Machine

González, Osvaldo; Ayala, Magno; Doval-Gandoy, Jesús; Rodas, Jorge; Gregor, Raúl; Rivera, Marco

doi:10.3390/en12122294

Cited by 28 publications

(21 citation statements)

References 28 publications

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“…The modulated PCC (M-PCC) proposed for six-phase IM drives in References [102][103][104][105] integrates a modulation technique in the control algorithm to reduce the x -y current components. This strategy considers that the α-β subspace is divided into forty-eight different sectors, which are defined by adjacent voltage vectors with the same amplitude.…”

Section: Predictive Current Control Based On Pulse Width Modulation Smentioning

confidence: 99%

“…This strategy considers that the α-β subspace is divided into forty-eight different sectors, which are defined by adjacent voltage vectors with the same amplitude. In order to calculate the duty cycles of the voltage vectors within each sector, the M-PCC strategy considers that the duty cycles of the zero and active vectors d z , d i , d j are inversely proportional to the value of the cost function (21) for the respective voltage vector, yielding [105]:…”

Section: Predictive Current Control Based On Pulse Width Modulation Smentioning

confidence: 99%

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Finite Control Set Model Predictive Control of Six-Phase Asymmetrical Machines—An Overview

2019

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Recently, the control of multiphase electric drives has been a hot research topic due to the advantages of multiphase machines, namely the reduced phase ratings, improved fault tolerance and lesser torque harmonics. Finite control set model predictive control (FCS-MPC) is one of the most promising high performance control strategies due to its good dynamic behaviour and flexibility in the definition of control objectives. Although several FCS-MPC strategies have already been proposed for multiphase drives, a comparative study that assembles all these strategies in a single reference is still missing. Hence, this paper aims to provide an overview and a critical comparison of all available FCS-MPC techniques for electric drives based on six-phase machines, focusing mainly on predictive current control (PCC) and predictive torque control (PTC) strategies. The performance of an asymmetrical six-phase permanent magnet synchronous machine is compared side-by-side for a total of thirteen PCC and five PTC strategies, with the aid of simulation and experimental results. Finally, in order to determine the best and the worst performing control strategies, each strategy is evaluated according to distinct features, such as ease of implementation, minimization of current harmonics, tuning requirements, computational burden, among others.

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Section: Predictive Current Control Based On Pulse Width Modulation Smentioning

confidence: 99%

Section: Predictive Current Control Based On Pulse Width Modulation Smentioning

confidence: 99%

Finite Control Set Model Predictive Control of Six-Phase Asymmetrical Machines—An Overview

2019

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show abstract

“…The optimization problem is solved on the basis of the specified cost function in order to determine the best sequence of the control signal. Different MPC concepts can be found in the literature [5,[9][10][11][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. The algorithm can be divided, taking into account the prediction horizon length.…”

Section: Introductionmentioning

confidence: 99%

“…In a significant number of papers, the FS-MPC [14,15,18,20,21,37,38] is used to control the electromagnetic part of the induction motor. Usually, based on the similarity to the DFOC structure, the rotor torque and the component of the stator current are regulated.…”

Section: Introductionmentioning

confidence: 99%

Model Predictive Base Direct Speed Control of Induction Motor Drive—Continuous and Finite Set Approaches

2020

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In the paper a comparative study of the two control structures based on MPC (Model Predictive Control) for an electrical drive system with an induction motor are presented. As opposed to the classical approach, in which DFOC (Direct Field Oriented Control) with four controllers is considered, in the current study only one MPC controller is utilized. The proposed control structures have a cascade free structure that consists of a vector of electromagnetic (torque, flux) and mechanical (speed) states of the system. The first investigated framework is based on the finite-set MPC. A short horizon predictive window is selected. The continuous set MPC is used in the second framework. In this case the predictive horizon contains several samples. The computational complexity of the algorithm is reduced by applying its explicit version. Different implementation aspects of both MPC structures, for instance the model used in prediction, complexity of the control algorithms, and their properties together with the noise level are analyzed. The effectiveness of the proposed approach is validated by some experimental tests.

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“…[13][14][15] A model-based predictive current control (MPCC) adding a modulation stage based on a switching pattern had been proposed; it reduced the currents according to a defined cost function at each sampling period. 16 An MPCC method adopting two vectors had been proposed to control output currents with small current errors and current ripples. 17 Another MPCC method had been proposed to mitigate the generation of harmonic components in multiphase drives.…”

Section: Introductionmentioning

confidence: 99%

Low cogging torque design and simplified model-free predictive current control for radial-flux dual three-phase permanent magnet electric machines

Lai

Chen

et al. 2019

Advances in Mechanical Engineering

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This study presents two improved designs of eccentric-shaped permanent magnets and teeth-shaped stators in radial-flux dual three-phase permanent magnet electric machines to reduce cogging torque and torque ripple. The finite element analysis (ANSYS Electromagnetics) has been adopted in simulation, and real radial-flux dual three-phase permanent magnet electric machines have been fabricated in experiment to verify the study. Using the radial-flux dual three-phase permanent magnet electric machines in electric machine systems can improve the reliability and obtain higher output torque. In electrical drives and control, a simplified model-free predictive current control method has been proposed and implemented to drive the radial-flux dual three-phase permanent magnet electric machines, and the control law has been achieved by a TMS320F28377S microcontroller of Texas Instruments. The simplified model-free predictive current control method is senseless to parameter variations and back electromotive force of the permanent magnet electric machines, and only needs current sensors to detect six-phase current. The optimal one has been chosen by 14 various switching modes, which has the minimum cost function, and then the converter can be directly driven and controlled in the next sampling period. The features of the simplified model-free predictive current control method can reduce the algorithm calculation and avoid the defect of conventional model-based predictive current control scheme. A proportional-integral speed controller has also been designed to achieve the speed response of the fixed-speed tracking effect. Finally, the feasibility and effectiveness of the proposed simplified model-free predictive current control method for the dual three-phase permanent magnet electric machines can be verified in the experimental and quantitative results.

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Predictive-Fixed Switching Current Control Strategy Applied to Six-Phase Induction Machine

Cited by 28 publications

References 28 publications

Finite Control Set Model Predictive Control of Six-Phase Asymmetrical Machines—An Overview

Finite Control Set Model Predictive Control of Six-Phase Asymmetrical Machines—An Overview

Model Predictive Base Direct Speed Control of Induction Motor Drive—Continuous and Finite Set Approaches

Low cogging torque design and simplified model-free predictive current control for radial-flux dual three-phase permanent magnet electric machines

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