The effect of excitation angles in single-pulse controlled switched reluctance machines on acoustics and efficiency

“…The turn-on and turn-off angles are crucial for the optimal control of the SRM because they govern the conduction time of each phase. Generally, the turn-on and turn-off angles are optimized for energy conversion efficiency maximization or torque ripple minimization (Klein-Hessling et al, 2014;Zan et al, 2015;Ziapour et al, 2013;Fatemi et al, 2009;Nakao and Akatsu, 2012;Xu et al, 2012;Kennedy et al, 2005;Seo et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Traditionally, the optimized angles are obtained from off-line simulation (Klein-Hessling et al, 2014;Zan et al, 2015;Ziapour et al, 2013). Various operation points need to be covered, and the simulation process is tedious.…”

Section: Introductionmentioning

confidence: 99%

A simple turn-on and turn-off angles searching method for copper loss minimization of the switched reluctance motor

Chen

2017

COMPEL

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Purpose The purpose of this paper is to present a simple and effective method to search the optimal turn-on and turn-off angles on-line for the control of the switched reluctance motor (SRM). The optimal turn-on and turn-off angles are defined as the ones that can meet torque production requirements with minimum copper loss. Design/methodology/approach The optimal turn-on and turn-off angles are first defined based on the analysis of the SRM losses and torque production principles. Then the algorithm for optimal angles searching is developed, and the searching parameters are determined through analytical computation. The optimal angles are approached on-line with iterative process. Simulation and experiments are finally performed to verify the proposed method. Findings The presented method can meet torque production requirements while copper loss is minimized. The optimal turn-on and turn-off angles are generally approached within five phase cycles for most of the SRM operation modes. Furthermore, the SRM drive system using the presented method exhibits good dynamics during starting and sudden load operations. Practical implications The presented method is simple, and implementation of it is easy. It is an eligible candidate for industrial applications where energy conversion efficiency is crucial. Originality/value The optimal turn-off angle definition that considers both torque production and copper loss minimization is proposed. The turn-on and turn-off angles are searched independently on-line with little SRM geometrical information. The searching steps are derived through analytical computation and qualitative analysis so that both the searching speed and algorithm convergence are balanced.

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“…Some research focuses on reducing actively the radial forces to overcome the noise issue [86], [87]. In [8] the influence of a switching angle dithering in singlepulse operation on the acoustics is investigated.…”

Section: Acoustic Controlmentioning

confidence: 99%

“…In this operation mode, the current (and consequently torque) is controlled by the three switching angles mentioned before. With the position of the current pulses the behavior of the machine can be strongly influenced [8], [86], [87]. Output power control is mostly performed with a fixed θ off (optimized for a specific design goal such as efficiency or acoustics) and by varying θ on [87], [88].…”

Section: A Current Controlmentioning

confidence: 99%

Technology, Research and Applications of Switched Reluctance Drives

et al. 2017

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Abstract-Electrical drives are one of the major consumers of electrical energy and their penetration in the market is still growing. Hence, for many drive applications efficient, reliable and cost effective solutions have to be found. Switched reluctance drives (SRD) offer a potential solution when focus is mainly on cost and robustness. However, to benefit from the unique advantages of this machine type a deep understanding of its strongly non-linear behavior is required. After discussing some major differences to classic rotating field machines, this paper presents a broad overview of the state of the art of SRD taking into consideration all aspects relevant to machine modeling, design and control development process. Finally, applications on the market utilizing SRDs and the focus of current research is presented. After reading this paper the reader will be able to assess if this modern drive technology could be advantagous in a given application.

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The effect of excitation angles in single-pulse controlled switched reluctance machines on acoustics and efficiency

Cited by 15 publications

References 9 publications

Active Source Current Filtering to Minimize the DC-Link Capacitor in Switched Reluctance Drives

Active Source Current Filtering to Minimize the DC-Link Capacitor in Switched Reluctance Drives

A simple turn-on and turn-off angles searching method for copper loss minimization of the switched reluctance motor

Technology, Research and Applications of Switched Reluctance Drives

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