Review of parameter identification and sensorless control methods for synchronous reluctance machines

Li, Chengrui; Wang, Gaolin; Zhang, Guoqiang; Zhao, Nannan; Xu, Dianguo

doi:10.23919/cjee.2020.000007

Cited by 20 publications

(4 citation statements)

References 50 publications

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“…In order to evaluate the performance of stator flux and rotor flux observer, the stability of observers should be investigated. According to ( 14) and ( 15), the transfer function of stator flux observer and rotor flux observer can be modified as (17) and (18), it can be seen that the characteristic equation of two flux observers are the same. All the parameters of characteristic equation should be positive to ensure the stability of the system.…”

Section: Proposed Flux Observermentioning

confidence: 99%

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A Modified Flux Observer for Sensorless Direct Torque Control of Dual Three-Phase PMSM Considering Open-Circuit Fault

Qiu

Zhou

et al. 2022

IEEE Trans. Power Electron.

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This paper proposes a modified flux observer for sensorless direct torque control (DTC) of the dual three-phase permanent magnet synchronous motor (PMSM). The proposed method can improve torque performance without position sensor. The flux observer is proposed to obtain the stator fluxes and rotor fluxes. The stator fluxes can be utilized to calculate the amplitude of torque and flux for DTC system. Meanwhile, the position information can be detected from the rotor fluxes by using a normalized phase-locked loop. This new flux observer can overcome the disadvantages due to the dc bias, initial value, and harmonic components. The stability of the proposed observer is also analyzed in this paper. In addition, a fault-tolerant DTC scheme for open-circuit fault is introduced. The performance of torque control and position estimation are evaluated under healthy, open-circuit fault, and fault-tolerant conditions. Simulation and experimental evaluation are carried out to confirm the effectiveness of the proposed sensorless DTC scheme. Index Terms-Flux observer, direct torque control (DTC), sensorless control, fault-tolerant, permanent-magnet synchronous motor (PMSM), dual three-phase motor.

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Section: Proposed Flux Observermentioning

confidence: 99%

“…However, the adoption of mechanical sensor not only increases the cost and size, but also reduces the reliability and robustness of drive system. To overcome these drawbacks, sensorless control has attracted much attention [12]- [18]. In general, the model-based method is common in sensorless control.…”

Section: Introductionmentioning

confidence: 99%

A Modified Flux Observer for Sensorless Direct Torque Control of Dual Three-Phase PMSM Considering Open-Circuit Fault

Qiu

Zhou

et al. 2022

IEEE Trans. Power Electron.

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“…The sensorless control is one of the most challenging issues of this drive system. Although the MRAS has been developed for more than two decades [32]- [34], this high speed application background requires careful design of MRAS structure to avoid instability and low accuracy. The control diagram of MRAS sensorless estimation is shown in Fig.…”

Section: ) Sensorless Control Algorithmmentioning

confidence: 99%

Mild Hybridization of Turboprop Engine With High-Power-Density Integrated Electric Drives

Chen

Yang

Khowja

et al. 2022

IEEE Trans. Transp. Electrific.

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This paper shares with the aerospace community a case study of turboprop mild hybridisation using a recently developed integrated drive system in the University of Nottingham, UK, within the ACHIEVE project under EU H2020 CleanSky 2 program (project No. 737814). The developed drive system enables green taxiing of a turboprop aircraft while on the ground with its engine off, and as an electrical generator when the turboprop is in the air. The entire system is designed to be able to integrate within the power auxiliary gear box (PAGB) of a turboprop aircraft. Some of the key features of the developed system include a high-speed permanent magnet machine (up to 14,200rpm) with dual three-phase design, SiC-based high power density (11.8kW/L for the power converter, 35.3kW/L and 7.2kW/kg for the machine active parts), integrated cooling design for high-temperature operation (>130º C ambient temperature), fault tolerance consideration with dual channel operation capabilities and sensorless control for entire operational conditions. This paper is giving an overview of the design process of the electrical machine, power converters, and its cooling of the entire drive. Numerical analysis (FEM and CFD) and some experimental results are presented to demonstrate the effectiveness and the desired performance of the developed integrated drive system.

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“…SynRMs are a highly nonlinear and strongly coupled system due to their self-and cross-saturation effects, which directly affect the torque output, power factor, excitation level, and stable operation area. To control SynRMs effectively, it is critical to evaluate the actual nonlinear behaviors of magnetic circuits based on accurate models [3][4][5]. Therefore, a nonlinear magnetic model [6] that satisfies the reciprocity conditions and inherent properties is introduced.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Algorithm for Parameter Identification of Synchronous Reluctance Machines

et al. 2022

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In rail transit traction, synchronous reluctance machines (SynRMs) are potential alternatives to traditional AC motors due to their energy-saving and low-cost characteristics. However, the nonlinearities of SynRMs are more severe than permanent magnet synchronous motors (PMSM) and induction motors (IM), which means the characteristics of SynRMs are challenging to model accurately. The parameter identification directly influences the modeling of nonlinearity, while the existing algorithms tend to converge prematurely. To overcome this problem, in this paper, a hybrid optimizer combining the SCA with the SSO algorithm is proposed to obtain the parameters of SynRMs, and the proposed Sine-Cosine self-adaptive synergistic optimization (SCSSO) algorithm preserves the self-adaptive characteristic of SSO and the exploration ability of SCA. Comprehensive numerical simulation and experimental tests have fully demonstrated that the proposed method has obviously improved parameter identification accuracy and robustness. In the dq-axis flux linkage, the mismatch between reference and estimated data of proposed algorithm is below 1% and 6%, respectively. Moreover, the best d-axis RMSE of SCSSO is 50% of the well-known algorithm CLPSO and 25% of BLPSO and its performance has improved by two orders of magnitude compared to traditional simple algorithms. In the q-axis, the best RMSE is 10% of CLPSO and 50% of Rao-3 and Jaya. Moreover, the performance of the proposed algorithm has improved nearly 90 times compared to traditional simple algorithms.

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Review of parameter identification and sensorless control methods for synchronous reluctance machines

Cited by 20 publications

References 50 publications

A Modified Flux Observer for Sensorless Direct Torque Control of Dual Three-Phase PMSM Considering Open-Circuit Fault

A Modified Flux Observer for Sensorless Direct Torque Control of Dual Three-Phase PMSM Considering Open-Circuit Fault

Mild Hybridization of Turboprop Engine With High-Power-Density Integrated Electric Drives

A Hybrid Algorithm for Parameter Identification of Synchronous Reluctance Machines

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