Design Optimization of a Synchronous Reluctance Machine for High-Performance Applications

Chowdhury, Mazharul; Tesfamicael, Abraham; Islam, Mohammad; Husain, Iqbal

doi:10.1109/tia.2021.3091416

Cited by 11 publications

(3 citation statements)

References 20 publications

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“…If the saturation in the motor parameters is small with the cancellation current injection, then the difference between the q-axis and d-axis inductance(𝐿 𝑞𝑠𝑎𝑡 − 𝐿 𝑑𝑠𝑎𝑡 ) can be considered constant. In this scenario, from (7) the final torque output would contain only the orders of 𝑛 1 and 𝑛 2 . As the saturation of the machine parameters with the changing current increases or if the magnitude of the injected cancellation current increases then the (𝐿 𝑞𝑠𝑎𝑡 − 𝐿 𝑑𝑠𝑎𝑡 ) difference may not be considered constant.…”

Section: Effect Of Parameter Saturation On the Active Torque Ripple C...mentioning

confidence: 99%

“…Different design refinement methods utilizing FEA are studied in [1], [2]. In [3][4][5][6][7], the influence of the different rotor geometries is investigated to optimize both the average torque and the torque ripple. A hybrid permanent magnet synchronous reluctance machine with axially sandwiched magnets is studied in [8], for improving the overall machine performance which includes the average torque and the torque ripple.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Torque Ripple Minimization Control Strategy in Synchronous Reluctance Machines

Singh¹,

Ramakrishnan²,

Sebastian³

et al. 2022

IEEE Open J. Ind. Applicat.

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Torque smoothness is an essential requirement for high-performance motor drive applications. Synchronous reluctance machines (SyRM) have high torque ripple due to non-linear magnetic circuit and saturation. Typically, in Permanent magnet machines the active torque ripple compensation is achieved by injecting a compensating ripple current in the q-axis. For SyRM, the current injection method for active torque ripple cancellation can be used in both the d-axis and q-axis. However, the saturation of the motor parameters with the changing current can result in varied performance between the two methods. This paper evaluates the effectiveness of both of these methods for torque ripple cancellation. For evaluation, the impact of parameter saturation with ripple current injection on the d-axis and the q-axis is studied. The mathematical conclusions obtained are evaluated by both the simulation and the experimental results performed on a 4 pole 1200W Synchronous reluctance machine.

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Section: Effect Of Parameter Saturation On the Active Torque Ripple C...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Torque Ripple Minimization Control Strategy in Synchronous Reluctance Machines

Singh¹,

Ramakrishnan²,

Sebastian³

et al. 2022

IEEE Open J. Ind. Applicat.

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“…In addition, SMs can apply different means to improve the power factor and efficiency of the electric motor drive. To obtain optimized characteristics for SMs extensive optimization algorithms can be used [1]- [4]. However, to verify the results of the optimization sequence a proper measurement proceeding is required.…”

Section: Introductionmentioning

confidence: 99%

Model Validation of Synchronous Motors With a New Standstill Measurement Technique

et al. 2023

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Permanent magnet synchronous machines (PMSM), synchronous reluctance machines (SynRM), and electrically excited synchronous machines (EESM), are used widely in the industry and transportation sectors. Often their rotors are equipped with conducting parts like permanent magnets, thick rotor laminations, real damper windings, a conducting sleeve or even have a solid rotor core. Such conducting elements do not allow applying standard AC-supply techniques for the inductance measurements due to the alternating flux induced by eddy currents. We propose a new technique for inductance measurement at standstill with a quasi-static voltage supply, which mitigates the eddy current phenomenon. The inductance is measured at several rotor positions over the complete electrical cycle, which allows to proceed with a harmonic spectrum analysis of the inductance variation. With this information, it is possible to estimate motor performance characteristics, such as optimum torque, voltage control, power factor, and torque ripple. The new technique is experimentally validated on a 12 kW axially laminated anisotropic solid-rotor high-speed SynRM. In principle, the method also suits to PMSMs, EESMs, and other possible synchronous machines (not verified in this paper). Experimental validation with a solid-rotor SynRM shows a good correspondence with the simulation. Furthermore, the torque computed using the measured inductance is very similar to the experimental one confirming the effectiveness of the method.

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