Open-Circuit Fault-Tolerant Control of Five-Phase Permanent-Magnet Synchronous Motor using Control Variable Method

Li, Guidan; Zhao, Yaping; Li, Bin

doi:10.1109/icem49940.2020.9270955

Cited by 4 publications

(6 citation statements)

References 17 publications

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“…According to the waveforms in Section 4. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], the rated motor torque must be reduced by 59.43% in order to maintain the original power load of the motor phases. When using fault-tolerant control on nonsymmetrical currents, they are reduced by 57.15% and symmetrical currents are reduced by 30.85%.…”

Section: Discussionmentioning

confidence: 99%

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Investigation of the Properties of a Five-Phase Induction Motor in the Introduction of New Fault-Tolerant Control

2022

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Multiphase electric motors in cooperation with power semiconductor converters belong to the future of electric drives. This is because of their better properties compared to three-phase motors, such as better fault tolerance. How a multiphase motor will behave in a fault state is very important when using such motors in EV and HEV. This is the basis of the research in this article; we investigate the options for operating a five-phase motor in a fault condition in order to improve the drive qualities during fault operation. The complete mathematical expressions of the five-phase induction motor model in the normal operation as well as in fault operation and also the control modification to improve the properties of the drive are presented. The new five-phase field-oriented control is next described, which improves the drive qualities in four-phase operation and is the first fundamental aspect of the study. Another important aspect of the project is the development of a specific control on a real motor, followed by measurements of properties of a five-phase motor in normal and fault operation of one phase without and with control modification to enhance drive characteristics. The qualities and appropriateness of employing a five-phase motor as a drive in EV and HEV are then determined by comparing these results. Finally, a comparison of motor attributes is shown with and without control adjustment.

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Section: Discussionmentioning

confidence: 99%

“…The fault conditions that are most frequently investigated and that can occur in a five-phase electrical machine are [7][8][9]:…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Properties of a Five-Phase Induction Motor in the Introduction of New Fault-Tolerant Control

2022

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“…( 12) can be further elaborated in Eq. (13). It is evident from the expression that we ideally require a switching pattern that forces fewer switches to change their states.…”

Section: Switching Frequency Regulationmentioning

confidence: 99%

“…Second constraints imply that the load is inductive and its current supply must not be interrupted. Suppose the disconnections occur during the operation of PMSM as described in paper [13]. In that case, the PMSM may draw excessive current, which will create heat in the winding, the ripples in torque are generated, and electronic components may be damaged.…”

mentioning

confidence: 99%

Switching Regulation in the Control of 5-Phase Permanent Magnet Synchronous Motor Fed by 3×5 Direct Matrix Converter

Ishaq¹,

Che²,

Ullah³

2021

EJEE

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Matrix converter is an AC-AC direct power converter comprising of an array of bi-directional switches. It does not require an intermediate DC-link and allows sinusoidal output waveforms with varying amplitudes and frequencies. The configuration of these bi-directional switches decides the number of inputs and outputs of the matrix converter. This research uses a direct matrix converter (DMC) as a phase-changing device that can convert a three-phase AC voltage into a 5-phase AC voltage. The DMC is modulated with the model predictive control algorithm. The output of DMC is fed to a five-phase permanent magnet synchronous motor (PMSM). The model predictive current control technique for DMC is carried out by developing a mathematical model of an input filter and PM motor used as a load. The predictive control of DMC results in sinusoidal output current, and it also enables the frequency variation in the output current. This frequency variation is useful in controlling the speed of the motor connected to the load. After controlling the 5-phase motor, the switching frequency regulation is done to observe its effect on the motor's stator current waveforms. Switching frequency regulation helps to limit the unnecessary switching of DMC. We developed a MATLAB-based Simulink model to study PMSM, and detailed results are presented. The results show that switching regulation can significantly reduce the switching frequency without compromising the current waveform quality.

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“…Considering the third harmonic back‐EMF, the authors in Ref. [21] proposed the fault‐tolerant control method for the five‐phase PMSM. However, the above research did not consider the current regulation with MC, and the full‐bridge inverter is relatively complicated, which seriously increases the volume and cost of the drive system.…”

Section: Introductionmentioning

confidence: 99%

Fault‐tolerant operation for five‐phase permanent magnet synchronous machine drives with five‐phase six‐leg inverter

Wu,

Yi,

Lyu

et al. 2024

IET Electric Power Appl

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Five‐phase permanent magnet synchronous machine (PMSM) can operate under open‐circuit faults with the appropriate current regulations. However, the traditional current regulations based on the five‐phase half‐bridge inverter have to satisfy the constraint of zero neutral point current, which limits the fault‐tolerant performance of the machine. Thus, this paper investigates the current regulation based on the five‐phase six‐leg (FPSL) inverter, which relieves the zero‐neutral point current limitation, and both current regulations considering the maximum torque (MT) and minimum copper loss (MC) are derived under different open‐circuit conditions. The cost of the system has increased, but with the new regulations, better fault‐tolerant operation capability of the machine can be obtained under all kinds of open‐circuit faults. Moreover, with the introduction of the neutral point current, the machine can work under triple‐phase open‐circuit faults. In conclusion, the proposed control scheme based on the FPSL inverter expands the fault‐tolerant operation capability of the five‐phase PMSM. The experiment results prove the effectiveness of the proposed current regulation on increasing average torque or reducing copper loss under fault‐tolerant operation.

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Open-Circuit Fault-Tolerant Control of Five-Phase Permanent-Magnet Synchronous Motor using Control Variable Method

Cited by 4 publications

References 17 publications

Investigation of the Properties of a Five-Phase Induction Motor in the Introduction of New Fault-Tolerant Control

Investigation of the Properties of a Five-Phase Induction Motor in the Introduction of New Fault-Tolerant Control

Switching Regulation in the Control of 5-Phase Permanent Magnet Synchronous Motor Fed by 3×5 Direct Matrix Converter

Fault‐tolerant operation for five‐phase permanent magnet synchronous machine drives with five‐phase six‐leg inverter

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