Torque ripple reduction of SRM by optimization of current reference

Shirahase, M.; Morimoto, Shigeo; Sanada, Masayuki

doi:10.1109/ipec.2010.5542376

Cited by 13 publications

(3 citation statements)

References 5 publications

(5 reference statements)

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“…Eine Variante ist die iterative Bestimmung der aufzuschalteten Größe, was allerdings einen Verzicht auf Determinismus nach sich zieht [10]. Eine weitere Variante ist das Anlegen eines Referenzsignals, welches empirisch oder mittels exakter motorspezifischer Modellierung offline ermittelt und in einer Tabelle abgespeichert wird [14,16]. Nachteilig hierbei ist die Verringerung der Robustheit der Regelung bezüglich Parameterschwankungen bzw.…”

Section: Regelkonzeptunclassified

Untersuchung der Reduktion der harmonischen elektrischen Größen beim Betrieb einer Synchron-Reluktanzmaschine

Nikowitz

Hofer

Schrödl

2019

Elektrotech. Inftech.

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In dieser Arbeit wird die Problematik der unerwünschten Harmonischen im Strangstrom sowie in der Strangspannung behandelt. Diese Harmonischen treten besonders im Fall der Synchron-Reluktanzmaschine mit Einzelpolen auf. Es wird das konventionelle mathematische Modell erweitert, um die Erzeugung der Harmonischen erklären und beschreiben zu können. Auf Grundlage des modifizierten mathematischen Modells wird eine Regler-Struktur vorgestellt, welche die unerwünschten Harmonischen im Strom bzw. in der Spannung erheblich reduziert. Dieses Regelkonzept benötigt lediglich die Frequenz der Harmonischen, wodurch ein universeller und robuster Einsatz möglich wird. Schlussendlich werden die vorgestellten Regelkonzepte anhand von Experimenten an einem Prototyp verifiziert. Schlüsselwörter: Synchronmaschine; Reluktanzmaschine; Harmonische; elektrische Antriebe; Echtzeit-Kompensation Analysing reduction possibilities of harmonic disturbances in synchronous reluctance machine drives. In this paper a current and voltage ripple reduction method is evaluated. These harmonic disturbances occur especially in synchronous reluctance machines with salient pole configuration. The fundamental wave model has to be enhanced to handle these unwanted harmonic effects. With this extended model a current and voltage ripple suppression method was developed, which only needs the frequency of the harmonic disturbance. Finally, the introduced control algorithms were verified on the prototype.

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Section: Regelkonzeptunclassified

Untersuchung der Reduktion der harmonischen elektrischen Größen beim Betrieb einer Synchron-Reluktanzmaschine

Nikowitz

Hofer

Schrödl

2019

Elektrotech. Inftech.

View full text Add to dashboard Cite

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“…In [5], an appropriate phase current profile is obtained by using Bspline neural networks. Authors in [6] and [7] have modified the current shape for operating in the high-speed region with reduced torque ripple by employing numerical simulations. In [8], a dynamic current profiling system is proposed using sense coils.…”

Section: Introductionmentioning

confidence: 99%

A Two-Step Control Approach for Torque Ripple and Vibration Reduction in Switched Reluctance Motor Drives

et al. 2022

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The objective of this work is to reduce the torque ripple and vibration in Switched Reluctance Motor (SRM) drives. To achieve such a goal, a two-step approach is proposed. In the first step, the reference current is profiled using an optimization method, aimed to reduce the torque pulsation. In the second, the optimum current profile is applied to the SRM through an adaptive hysteresis band controller to actively cancel the radial vibration. The proposed technique uses an optimization procedure based on the Field Reconstruction Method (FRM) and Non-Derivative Optimization Method to find the optimal current profile that mitigates the torque pulsation, however, the investigation has shown that the proposed excitation leads to a higher radial vibration, which has been mitigated by using an adaptive hysteresis band controller. The theoretical basis for the proposed approach is initially presented, followed by system modeling and simulation. In addition, experimental verification has been conducted using an 8/6 SRM to show the feasibility of the proposed approach. The proposed method alleviates the acoustic noise and torque pulsation in SRM and offers an effective step towards the prevalent use of SRM in a wide range of applications.

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“…In [17], the phase current was compensated in the demagnetizing period to reduce torque ripple and extend speed range. In [18], the reference current shape was modified to reduce the current tracking error. Despite the effectiveness of TSF for torque ripple reduction in SRM drives, it is meant only for low-speed operation.…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation for an Improved Direct Instantaneous Torque Control Strategy of Switched Reluctance Motor Drives for Electric Vehicles

et al. 2021

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Due to the expected increase in the electric vehicles (EVs) sales and hence the increase of the price of rare-earth permanent magnets, the switched reluctance motors (SRMs) are gaining increasing research interest currently and in the future. The SRMs offer numerous advantages regarding their structure and converter topologies. However, they suffer from the high torque ripple and complex control algorithms. This paper presents an improved direct instantaneous torque control (DITC) strategy of SRMs for EVs. The improved DITC can fulfill the vehicle requirements. It involves a simple online torque estimator and a torque error compensator. The turn-on angle is defined analytically to achieve wide speed operation and maximum torque per ampere (MTPA) production. Moreover, the turn-off angles are optimized for minimum torque ripples and the highest efficiency. In addition, this paper provides a detailed comparison between the proposed DITC and the most applicable torque control techniques of SRMs for EVs, including indirect instantaneous torque control (IITC), using torque sharing function (TSF) strategy and average torque control (ATC). The results show the superior performance of the proposed DITC because it has the lowest torque ripples, the highest torque tor current ratio, and the best efficiency over the low and medium speed ranges. Moreover, the comparison shows the advantages of each control technique over the range of speed control. It provides a very clear overview to develop a universal control technique of SRM for EVs by merging two or more control techniques.

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Torque ripple reduction of SRM by optimization of current reference

Cited by 13 publications

References 5 publications

Untersuchung der Reduktion der harmonischen elektrischen Größen beim Betrieb einer Synchron-Reluktanzmaschine

Untersuchung der Reduktion der harmonischen elektrischen Größen beim Betrieb einer Synchron-Reluktanzmaschine

A Two-Step Control Approach for Torque Ripple and Vibration Reduction in Switched Reluctance Motor Drives

Comparative Evaluation for an Improved Direct Instantaneous Torque Control Strategy of Switched Reluctance Motor Drives for Electric Vehicles

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