Phase current reconstruction strategy for switched reluctance machines with fault‐tolerant capability

Han, Guoqiang; Chen, Hao; Shi, Xianqiang; Wang, Yan

doi:10.1049/iet-epa.2016.0567

Cited by 27 publications

(22 citation statements)

References 30 publications

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“…In [15] a mutually coupled dual three-phase SRM is used and in [16]- [18] it is adopted, as fault tolerant control strategy, the modification of the control parameters and references. Approaches using phase current reconstruction schemes were proposed in [19], [20]. In [20] it is presented an active faulttolerant position sensor controller to increase the SRM drive reliability regarding position sensor failures.…”

Section: Introductionmentioning

confidence: 99%

A Multilevel Fault-Tolerant Power Converter for a Switched Reluctance Machine Drive

et al. 2020

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Reliability in the electrical drives is becoming an important issue in many applications. In this context, the reliability associated to the switched reluctance machine (SRM) is also an important area of research. One of the major problems, that strongly affect its operation, are drive power semiconductors faults. Typical power converter topologies used in SRM drives cannot handle faults in their power semiconductors. So, this paper presents a power converter topology that provides fault-tolerant capabilities to the drive under a switch fault. This power converter will be used considering that a change in the direction of the current that flows in the SRM windings does not affect the behavior of the machine. Besides that, the proposed power converter will allow to generate multilevel phase voltages in order to apply different voltage levels as function of the SRM speed. A laboratory power converter was developed to test the SRM drive in normal and faulty conditions. From the obtained results it was possible to verify the fault-tolerant capability of the drive under switch faults in different devices and failure modes. It was also possible to confirm the multilevel operation of the drive.

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Section: Introductionmentioning

confidence: 99%

A Multilevel Fault-Tolerant Power Converter for a Switched Reluctance Machine Drive

et al. 2020

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“…Moreover, it can be implemented in three-phase SRMs. In [10], two cross-winding current sensors can be used for reconstructing the demagnetization currents without pulse injection and converter topology changes. However, linear equations associated with two adjacent phase currents in the different turn-on regions are needed to be solved, which will increase the computation time and errors in the results.…”

Section: Introductionmentioning

confidence: 99%

Minimal Current Sensing Strategy for Switched Reluctance Machine Control With Enhanced Fault-Detection Capability

Peng

Gyselinck

Ahn

et al. 2019

IEEE Trans. on Ind. Applicat.

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This paper focuses on a minimal current sensing strategy and fault detection of Switched Reluctance Machines (SRMs). In order to reduce the number of required current sensors in multiphase motor drives, the optimal selection and location of current sensors is presented in consideration of the precise actual phase current measurement, open-and shortcircuit fault detection. The proposed scheme requires two current sensors to replace the phase current sensors placed in each phase without any additional devices for multiphase SRMs to achieve a more compact and low-cost drive. Different current regulation methods are employed for single phase conducting region and commutation region. To obtain the phase currents from the proposed approach, different settings of the pulse-width modulation (PWM) signals for adjacent phases during the commutation region are implemented. The simulation and experiments on a four-phase 8/6 pole SRM are carried out to verify the effectiveness of this approach in the healthy and faulty cases.

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“…Due to the special control strategies and topologies, the above methods cannot be directly applied to SRD. Fortunately, some effective methods have been proposed in [3,4,[9][10][11][12][13]. According to the number of current sensors, exciting methods can be divided into one-sensor and two-sensor methods.…”

Section: Introductionmentioning

confidence: 99%

“…The exciting methods can accurately achieve the sensing of i ph with less number of current sensors, but there is still no work to explore how to select the most powerful methods for a specific application occasion. Generally, the dominant factors include cost, operation performance, and reliability for selection of phase current sensing methods [9][10][11][12][13]. It is no doubt the cost in one-sensor method is lower than the two-sensor method, but the operation performance and reliability have not been fully explored up till now.…”

Section: Introductionmentioning

confidence: 99%

Comparative evaluation on switched reluctance motor drive with different phase current sensing methods

Chen

Yang

et al. 2019

IET Electric Power Applications

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Cost-effective phase current sensing is critical for the performance improvement of switched reluctance motor drive (SRD). In this study, a new two-sensor phase current sensing method is proposed and comparatively investigated with conventional m-sensor and one-sensor methods. First, the operation principles of the m-sensor, one-sensor, and proposed twosensor methods are illustrated in detail on a four-phase SRD. Compared with the one-sensor method, the topology can be maintained without splitting the lower bus into freewheeling bus and excitation bus under the two-sensor method. Next, an advanced decoupling strategy is presented to obtain the complete phase current information and shorten the region of switch signals injection. With the simulation model in Matlab/Simulink environment, the steady and transient performance of SRD in the proposed method are not inferior to m-sensor and one-sensor methods. Meanwhile, the proposed two-sensor method is demonstrated to own superior thermal stress distribution by the finite-element model in ANSYS software. Eventually, the dynamic reliability is proved to be not enhanced as the number of current sensors decreases. Finally, an experimental setup with double-core TMS320F28377D is built to validate the proposed method and evaluation results.

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Phase current reconstruction strategy for switched reluctance machines with fault‐tolerant capability

Cited by 27 publications

References 30 publications

A Multilevel Fault-Tolerant Power Converter for a Switched Reluctance Machine Drive

A Multilevel Fault-Tolerant Power Converter for a Switched Reluctance Machine Drive

Minimal Current Sensing Strategy for Switched Reluctance Machine Control With Enhanced Fault-Detection Capability

Comparative evaluation on switched reluctance motor drive with different phase current sensing methods

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