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Your search keyword '"*RELUCTANCE motors"' showing total 2 results
Start Over Descriptor "*RELUCTANCE motors" Publication Year Range This year Publisher emerald publishing limited
2 results on '"*RELUCTANCE motors"'

1. Modeling of novel cross-type hybrid 4-pole carrier system and experimental air gap control.

Author

Göker, Enes Mahmut, Bozkurt, Ahmet Fevzi, and Erkan, Kadir

Subjects
*AIR gap (Engineering), *AUTOMATIC control systems, *ELECTROMAGNETS, *LEVITATION, *PROBLEM solving, *TORQUE, *RELUCTANCE motors
Abstract

Purpose: The purpose of this paper is to introduce a novel cross (+) type yoke with hybrid electromagnets and new reluctance modeling to precisely calculate attraction force is given. Design/methodology/approach: The comparison of attraction force and torque analyses between the proposed formulation and the existing formulation in the literature is comparatively presented. For the correctness of the force and torque values calculated in the model created, the system was created in ANSYS Maxwell and its accuracy was proved by making analyses. The maglev carrier system is inherently unstable from the point of view of control engineering. For that, it needs an active controller to eliminate this instability. For the levitation of the carrier system, it is necessary to design a controller in three axes (z, α and β). I-PD controller was designed for the air gap control of the carrier system in three axes and the controller parameters were determined by the canonical method. Findings: While the new formulation proposed in the modeling of the carrier system has a maximum error of 1.03%, the existing formula in the literature has an error of 16.83% in the levitation distance point. Originality/value: A novel cross-type hybrid carrier system has been proposed in the literature. With the double integral used in modeling the system, it takes a long time to solve symbolically, and it is difficult to simulate dynamic behavior in control validation. To solve this problem, attraction force and inclination torque values are easily characterized by new formulation and besides the simulations are conducted easily. The experimental setup was manufactured and assembled, and the carrier system was successfully levitated, and reference tracking was performed without overshoot. [ABSTRACT FROM AUTHOR]

Published
2024
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2. Neutral-point-clamped inverter based synchronous reluctance motor drive for solar pump application.

Author

V., Rajini, M., Jassem, V.S., Nagarajan, Galla N.V. Sai, Sreeya, and Rb, Jeyapradha

Subjects
*SWITCHED reluctance motors, *RELUCTANCE motors, *SOLAR pumps, *SYNCHRONOUS electric motors, *PERMANENT magnets, *IRON
Abstract

Purpose: Industrial drives require appropriate control systems for reliable and efficient performance. With synchronous reluctance machines (SynRMs) slowly replacing the most commonly used induction, switched reluctance and permanent magnet machines, it is essential that the drive and its control be properly selected for enhanced performance. But the major drawback of synchronous reluctance motor is the presence of high torque ripple as its design is characterized by large number of variables. The solutions to reduce torque ripple include design modifications, choice of proper power electronic inverter and PWM strategy. But little has been explored about the power electronic inverters suited for synchronous reluctance motor drive to minimize torque ripple inherently by obtaining a more sinusoidal voltage. The purpose of this paper is to elaborate on the potential multilevel inverter topologies applicable to SynRM drives used in solar pumping applications. Design/methodology/approach: The most significant field-oriented control using maximum torque per ampere algorithm for maximizing the torque production is used for the control of SynRM. Simulation results carried out using Matlab/Simulink are presented to justify the choice of inverter and its control technique for SynRM. Findings: The five-level inverter drive gives lesser core or iron losses in the SynRMin comparison to the three- and two-level inverters due to lower Id current ripple. The five-level inverter reduces the torque ripple of the SynRM significantly in comparison to the three- and two-level inverter fed SynRM drives. The phase disposition-PWM control method used for the inverter shows the least total harmonic distortion (THD) levels in output voltage compared with the other level shifted PWM techniques. Originality/value: Among the available topologies, a fitting topology is proposed for use for the SynRM drive to have minimal THD, minimal current and torque ripple. Additionally, this paper presents various modulation techniques available for the selected drive system and reports on a suitable technique based on minimal THD of output voltage and hence minimal torque ripple. [ABSTRACT FROM AUTHOR]

Published
2024
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