Robust Predictive Current Control for Fault-Tolerant Operation of Five-Phase PM Motors Based on Online Stator Inductance Identification

An, Xingke; Liu, Guohai; Chen, Qian; Zhao, Wenxiang; Song, Xiangjin

doi:10.1109/tpel.2021.3077235

Cited by 23 publications

(10 citation statements)

References 31 publications

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“…In (11), θ 1 and θ 2 are the phase angles of two motors. T(θ 1 ) and T(θ 2 ) are the decoupling transformation matrices of two motors from a natural coordinate system(abcde) to a synchronous coordinate system(dq).…”

Section: Voltage Decoupling Model Of Two Fpmsm In Seriesmentioning

confidence: 99%

“…where, λ = 3θ 1 − θ 2 , ϕ = 3θ 2 + θ 1 . Equation (11) shows that the voltages in the fundamental subspaces of the two motors are completely decoupled. Assuming that the output voltage in the harmonic subspaces Energies 2022, 15, 4700 6 of 23 of the two motors is zero, the voltage in the fundamental plane of the motor 1 can be derived as:…”

Section: Voltage Decoupling Model Of Two Fpmsm In Seriesmentioning

confidence: 99%

“…The five−phase motor has an extra free subspace. For the non−sinusoidal motor, the harmonic subspace can be used for harmonic injection to improve torque density or fault−tolerant control [11][12][13]. While, for the sinusoidal five−phase motor, this extra free subspace has no torque contribution, it is Energies 2022, 15, 4700 2 of 23 possible to connect another five−phase motor in series with a single inverter.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Flux−Linkage Torque Ripple Suppression Method of Dual−Series FPMSMs Decoupling Control Based on Dual−Frequency Vector Modulation

Sun

Yang

et al. 2022

Energies

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A novel cross−series connection of two five−phase permanent magnet synchronous motors (FPMSM) supplied by single inverter can halve the number of required power units and current sensors. This, along with a decoupling control strategy for FPMSMs in series based on an improved dual−frequency vector modulation (DFV−SVPWM) and a flux−linkage torque ripple suppression method with current compensation are proposed in this paper, each of which have great significance for multi−unit industrial equipment. The third harmonic flux−linkage will produce torque ripple in the FPMSM in series, which has an adverse effect on accuracy. In this paper, a synchronous decoupling mathematical model of dual−series FPMSM with harmonic flux−linkage is established to analyze the decoupling relationship between torque and current. In addition, an enhanced DFV−SVPWM with higher modulation ratio is proposed for the decoupling control of double motors in series. Furthermore, based on the torque influence of two series−connected motors by harmonic flux−linkage and the decoupling control with improved DFV−SVPWM, a torque ripple compensation method with current compensation is proposed, which can effectively suppress the torque ripple of FPMSM with harmonic flux−linkage and not affect the other. The correctness and superiority of the scheme are verified by simulation and experiment in this paper.

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Section: Voltage Decoupling Model Of Two Fpmsm In Seriesmentioning

confidence: 99%

Section: Voltage Decoupling Model Of Two Fpmsm In Seriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Flux−Linkage Torque Ripple Suppression Method of Dual−Series FPMSMs Decoupling Control Based on Dual−Frequency Vector Modulation

Sun

Yang

et al. 2022

Energies

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show abstract

“…Recently, the model predictive control (MPC) has become a significant alternative for high performance control of motor drives. According to the control variable, MPC can be categorized into two sorts, model predictive current control (MPCC) [14]- [16] and model predictive torque control (MPTC) [18]- [20]. When MPC strategy is applied in multi-phase motor drives in faulty states, the regulations of both fundamental and harmonic subspaces can be obtained by designing predictive models and optimizing cost functions.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis and comparison of two fault-tolerant model predictive control methods for five-phase PMSM drives

Huang

Wang

Fan

2021

Trans. Electr. Mach. Syst.

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Model predictive current control (MPCC) and model predictive torque control (MPTC) are two derivatives of model predictive control. These two control methods have demonstrated their strengths in the fault-tolerant control of multiphase motor drives. To explore the inherent link, the pros and cons of two strategies, the performance analysis and comparative investigation of MPCC and MPTC are conducted through a fivephase permanent magnet synchronous motor with open-phase fault. In MPCC, the currents of fundamental and harmonic subspaces are simultaneously employed and constrained for a combined regulation of the open-circuit fault drive. In MPTC, apart from the torque and the stator flux related to fundamental subspace, the x-y currents are also considered and predicted to achieve the control of harmonic subspace. The principles of two methods are demonstrated in detail and the link is explored in terms of the cost function. Besides, the performance by two methods is experimentally assessed in terms of steady-state, transition, and dynamic tests. Finally, the advantages and disadvantages of each method are concluded.

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“…In the references on the research of one-phase open-circuit fault-tolerant control of multi-phase PMSM, the influence of fundamental wave space and harmonic space on fault-tolerant control is rarely considered at the same time [23][24][25]. After a one-phase open-circuit fault occurs in dual three-phase PMSM, there is a coupling between the fundamental wave space and the harmonic space.…”

mentioning

confidence: 99%

Research on Open-circuit Fault Tolerant Control of Six-phase Permanent Magnet Synchronous Machine Based on Fifth Harmonic Current Injection

Zhang

et al. 2022

Trans. Electr. Mach. Syst.

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This paper proposes a novel control approach for fault-tolerant control of dual three-phase permanent magnet synchronous motor (PMSM) under one-phase open-circuit fault. A modified six-phase static coordinate transformation matrix and an extended rotating coordinate transformation matrix are investigated considering the influence of the fifth harmonic space on fault-tolerant control. These mathematical models are further analyzed in the fundamental space and the fifth harmonic space after the fault and to eliminate the coupling between the d-q axis voltage equation in the fundamental wave space and the d-q axis voltage equation in the fifth harmonic space, a secondary rotation coordinate transformation matrix is proposed. To achieve the purpose of reducing torque ripple, the fault-tolerant control method proposed in this paper not only takes the minimum copper loss as the constraint condition, but also injects the fifth harmonic current. The experimental result of current and torque is used to verify the accuracy of fault-tolerant control.

show abstract

Robust Predictive Current Control for Fault-Tolerant Operation of Five-Phase PM Motors Based on Online Stator Inductance Identification

Cited by 23 publications

References 31 publications

A Flux−Linkage Torque Ripple Suppression Method of Dual−Series FPMSMs Decoupling Control Based on Dual−Frequency Vector Modulation

A Flux−Linkage Torque Ripple Suppression Method of Dual−Series FPMSMs Decoupling Control Based on Dual−Frequency Vector Modulation

Performance analysis and comparison of two fault-tolerant model predictive control methods for five-phase PMSM drives

Research on Open-circuit Fault Tolerant Control of Six-phase Permanent Magnet Synchronous Machine Based on Fifth Harmonic Current Injection

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