scholarly journals Numerical and Experimental Analysis of Vibrations in a Three-Phase Linear Switched Reluctance Actuator

2020 ◽  
Author(s):  
José António da Costa Salvado ◽  
Maria do Rosário Alves Calado ◽  
António Eduardo Vitória do Espírito-Santo
Keyword(s):  
Experimental Analysis ◽  
Switched Reluctance ◽  
Three Phase

scholarly journals Numerical Modal Analysis of Vibrations in a Three-Phase Linear Switched Reluctance Actuator

2017 ◽  
Vol 2017 ◽  
pp. 1-18
Author(s):  
José Salvado ◽  
Maria do Rosário Calado ◽  
António Espírito Santo ◽  
Anna Guerman
Keyword(s):  
Control Strategies ◽  
Mode Shapes ◽  
Audio Signals ◽  
Structural Vibrations ◽  
Significant Information ◽  
Switched Reluctance ◽  
Three Phase ◽  
Linear Configuration ◽  
Analytical Approaches

This paper addresses the problem of vibrations produced by switched reluctance actuators, focusing on the linear configuration of this type of machines, aiming at its characterization regarding the structural vibrations. The complexity of the mechanical system and the number of parts used put serious restrictions on the effectiveness of analytical approaches. We build the 3D model of the actuator and use finite element method (FEM) to find its natural frequencies. The focus is on frequencies within the range up to nearly 1.2 kHz which is considered relevant, based on preliminary simulations and experiments. Spectral analysis results of audio signals from experimental modal excitation are also shown and discussed. The obtained data support the characterization of the linear actuator regarding the excited modes, its vibration frequencies, and mode shapes, with high potential of excitation due to the regular operation regimes of the machine. The results reveal abundant modes and harmonics and the symmetry characteristics of the actuator, showing that the vibration modes can be excited for different configurations of the actuator. The identification of the most critical modes is of great significance for the actuator’s control strategies. This analysis also provides significant information to adopt solutions to reduce the vibrations at the design.

scholarly journals A novel power inverter for switched reluctance motor drives

2005 ◽  
Vol 18 (3) ◽  
pp. 453-465 ◽  
Author(s):  
Zeljko Grbo ◽  
Slobodan Vukosavic ◽  
Emil Levi
Keyword(s):  
Switched Reluctance Motor ◽  
Voltage Source ◽  
Power Electronic ◽  
Switched Reluctance ◽  
Three Phase ◽  
Reluctance Motor ◽  
Converter Topology ◽  
Dc Bus ◽  
Bus Voltage ◽  
Power Electronic Converter

Although apparently simpler, the SRM drives are nowadays more expensive than their conventional AC drive counterparts. This is to a great extent caused by the lack of a standardised power electronic converter for SRM drives, which would be available on the market as a single module. A number of attempts were therefore made in recent times to develop novel power electronic converter structures for SRM drives, based on the utilization of a three-phase voltage source inverter (VSI), which is readily available as a single module. This paper follows this line of thought and presents a novel power electronic converter topology for SRM drives, which is entirely based on utilization of standard inverter legs. One of its most important feature is that both magnetizing and demagnetizing voltage may reach the DC-bus voltage level while being contemporarily applied during the conduction overlap in the SRM adjacent phases. At the same time, the voltage stress across the power switches equals the DC-bus voltage. The topology is functional in all operating regimes of the drive. Principle of operation is explained in detail for a three-phase SRM drive and experimental results obtained with a 6/4 switched reluctance motor, are included. Four inverter legs are required in this case. Some considerations, justifying the proposed converter topology from the point of view of the cost, are included.

scholarly journals Variation of Speed and Torque Response of Closed-Loop Classical Controlled Different Rated BLDC Motor

2020 ◽  
Vol 8 (6) ◽  
pp. 230-235
Keyword(s):  
Electromotive Force ◽  
Motor Performance ◽  
Closed Loop ◽  
Motor Drive ◽  
Bldc Motor ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Torque Response ◽  
Three Phase ◽  
Comparative Examination

This manuscript proposes a comparative analysis of BLDC motor performance at various ratings. The BLDC motor may act as a replacement for conventional engines such as the Brushed DC motor, the induction motor, the switched reluctance motors, etc. Because of the BLDC motor's overweight merits, modeling is performed to improve system performance. The torque feature of BLDC motor plays an extremely significant aspect in the fabrication of the BLDC motor drive device, so it is crucial to approximation the exact torque value that is calculated by the simulation of the model proposed in MATLAB software. In the MATLAB / Simulink setting, different ratings of BLDC motor are simulated after the creation of the straightforward analytical model of the three-phase BLDC motor with counter electromotive force trapezoidal waveforms. Based on the review, a comparative examination of each valued engine outcome is displayed in the MATLAB environment's Graphical User Interface.

scholarly journals Advanced Dynamic Modeling of Three-Phase Mutually Coupled Switched Reluctance Machine

2018 ◽  
Vol 33 (1) ◽  
pp. 146-154 ◽  
Author(s):  
Jianning Dong ◽  
Brock Howey ◽  
Benjamin Danen ◽  
Jianing Lin ◽  
James Weisheng Jiang ◽  
...  
Keyword(s):  
Dynamic Modeling ◽  
Switched Reluctance Machine ◽  
Switched Reluctance ◽  
Reluctance Machine ◽  
Three Phase

Switched Reluctance Generator in connection with the three-phase power grid

2015 ◽  
Author(s):  
G. P. Viajante ◽  
M. A. A. Freitas ◽  
J. A. Santos ◽  
V. R. Bernardeli ◽  
M.E. Oliveira ◽  
...  
Keyword(s):  
Power Grid ◽  
Switched Reluctance ◽  
Three Phase
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