Asymmetrical SVPWM Fault-Tolerant Control of Five-Phase PM Brushless Motors

Chen, Qian; Liu, Guohai; Zhao, Wenxiang; Qu, Li; Xu, Gaohong

doi:10.1109/tec.2016.2611620

Cited by 50 publications

(33 citation statements)

References 40 publications

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“…When short-circuit faults occur in either nonadjacent-phase (phase-B and phase-E) or adjacent-phase (phase-C and phase-D), the currents in the remaining healthy phases are seriously distorted. According to (3) and 4, iα and ix are coupling, thus ix cannot be controlled to zero by adopting the traditional VC strategy. And according to (1), the phase-A current is equal to iα+ ix.…”

Section: Resultsmentioning

confidence: 99%

“…MULTIPHASE permanent-magnet (PM) motors have attracted considerable attention in high reliability applications due to their main merits [1] [2]. Compared with three phase ones, they have lower pulsating torque, more effective mitigation in both the voltage and current stress, lower dc-link current harmonics and more degrees of freedom for restraining the impact of fault phases [2] [3]. Continued operation is critical requirement in safety-critical cases because the shutdown of the motor may not be admissible even under the most serious fault scenarios [4] [5].…”

Section: Introductionmentioning

confidence: 99%

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Unified Decoupling Vector Control of Five-Phase Permanent-Magnet Motor With Double-Phase Faults

Cheng

Zhou

Wang³

2020

IEEE Access

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Multi-phase permanent-magnet (PM) motor is a competitive candidate for application where uninterrupted operation is demanded under fault condition. However, double-phase open-circuit or short-circuit faults result in serious problems, such as high fluctuating-torque, deteriorated dynamic performance, even breakdown. This paper proposes a novel unified decoupling vector control strategy to restrain torque fluctuations and improve dynamic performance for a five-phase PM motor with arbitrary double-phase failures. The novelty of the proposed strategy is the development of reduced-order orthogonal transformation matrices and remedies voltages, and then the smooth operation with vector control strategy can be achieved under double-phase open-circuit or short-circuit fault condition. The decoupled motor model in the synchronous rotating frame is achieved by the combination of the reduced-order orthogonal transformation matrices deduced from the optimal fault-tolerant currents and the remedy voltages. The torque fluctuations cancellation is achieved by the remedy voltages. This control strategy exhibits the improved dynamic performance with smooth torque of the faulty PM motor. The experimental results are presented to verify the feasibility of the proposed strategy. INDEX TERMS Five-phase permanent-magnet motor, fault-tolerant control, reduced-order orthogonal transformation matrix, remedy voltage, double-phase faults, vector control.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unified Decoupling Vector Control of Five-Phase Permanent-Magnet Motor With Double-Phase Faults

Cheng

Zhou

Wang³

2020

IEEE Access

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“…Step3 Executing the first optimized solve to obtain the value of the objective function (23), then sending the value to the Genetic Algorithm Module.…”

Section: Parameters Optimization For Sgcmentioning

confidence: 99%

“…However, the main shortcoming of MPC-based FTC is that the scheme calculation is larger and the weighting factor is difficult to decide. FOC-based FTC method for the multiphase machine drive system correspond with one faulty phase are discussed in [23]- [27], and fault tolerance performances are effective. However, the dynamic response of FOC-based FTC is limited since the parameters of PI controller would overspend time by the designed experience.…”

Section: Introductionmentioning

confidence: 99%

Robust Fault-Tolerant Synergetic Control for Dual Three-Phase PMSM Drives Considering Speed Sensor Fault

et al. 2020

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Stability and reliability are the most important indicators of drive systems. In this article, a robust nonlinear control method is advanced for dual three-phase permanent-magnet synchronous machine (dual-PMSM) drives, based on the synergetic control theory. This control is implemented by a new synergetic controller (SGC) integrating with an extended sliding mode observer (ESMO), and an optimization method is applied to obtain the optimal parameters of the SGC. This control scheme not only improves the dynamic performance even with operating parameters change, but also can diagnose the speed sensor fault and realize the fault tolerant control (FTC). The proposed control method is compared with the PI control, the sliding mode control (SMC) and the predictive control, as well as the simulation and experimental results confirm the superior dynamic performance and the effectiveness on the speed sensor fault diagnosis (FD) and FTC. INDEX TERMS Synergetic controller, fault diagnosis, fault-tolerant control, speed sensor fault, dual threephase permanent-magnet synchronous machine (dual-PMSM).

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“…Analytical models of PMSM machines have been thoroughly studied by the scientific community to obtain reliable and precise behavior of the electric drives and generators for investigation, design optimization [6], diagnosis [7], control [8], [9], and sensorless observing purposes [10], [11]. Finite Element Analysis (FEA) is widely adopted for the geometrical optimization and performance prediction.…”

Section: Introductionmentioning

confidence: 99%

Multiphase PMSM and PMaSynRM Flux Map Model with Space Harmonics and Multiple Plane Cross Harmonic Saturation

Michalski

Acosta-Cambranis

Romeral

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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Multiphase Synchronous Machines vary in rotor construction and winding distribution leading to non-sinusoidal inductances along the rotor periphery. Moreover, saturation and cross-saturation effects make the precise modeling a complex task. This paper proposes a general model of multi-phase magnetexcited synchronous machines considering multi-dimensional space modeling and revealing cross-harmonic saturation. The models can predict multiphase motor behavior in any transient state, including startup. They are based on flux maps obtained from static 2D Finite-Element (FE) analysis. FE validations have been performed to confirm authenticity of the dynamic models of multiphase PMaSynRMs. Very close to FE precision is guaranteed while computation time is incomparably lower.

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Asymmetrical SVPWM Fault-Tolerant Control of Five-Phase PM Brushless Motors

Cited by 50 publications

References 40 publications

Unified Decoupling Vector Control of Five-Phase Permanent-Magnet Motor With Double-Phase Faults

Unified Decoupling Vector Control of Five-Phase Permanent-Magnet Motor With Double-Phase Faults

Robust Fault-Tolerant Synergetic Control for Dual Three-Phase PMSM Drives Considering Speed Sensor Fault

Multiphase PMSM and PMaSynRM Flux Map Model with Space Harmonics and Multiple Plane Cross Harmonic Saturation

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