scholarly journals Optimum Switching Angles Control of SRM for Electric Vehicle Applications

2021 ◽  
Author(s):  
Laith Al Quraan ◽  
Laszlo Szamel ◽  
Mahmoud Hamouda
Keyword(s):  
Optimization Technique ◽  
Torque Ripple ◽  
Industrial Applications ◽  
Current Control ◽  
Magnetic Characteristics ◽  
Switched Reluctance ◽  
Copper Loss ◽  
Wide Range ◽  
Simplified Procedure ◽  
Minimum Torque

Switched Reluctance Motor (SRM) drive is being gradually used in industrial applications, including electric vehicles (EVs), due to several advantages over conventional motors. However, the nonlinear magnetic characteristics of the motor make its controller very complicated. This paper presents a simplified procedure to obtain the optimal switching angles under hysteresis current control SRM drive over a wide range of speeds. A multi-objective optimization technique is applied to determine the optimal switch on and switch off angles that achieve the optimum combination of maximum average torque with minimum torque ripple and copper loss. A searching algorithm is developed for each operating point to define the maximum average torque and the minimum torque ripple and copper losses, as they vary for different currents and motor speeds. Then the optimal values of switching angles are stored in the lookup tables to build a MATLAB model of the SRM drive system. Finally, simulation and experimental results are presented to show the validity and effectiveness of the proposed controller.

scholarly journals R Dump Converter without DC Link Capacitor for an 8/6 SRM: Experimental Investigation

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Pasumalaithevan Kavitha ◽  
Bhaskaran Umamaheswari
Keyword(s):  
Torque Ripple ◽  
Current Control ◽  
Experimental Investigations ◽  
Switched Reluctance ◽  
Hysteresis Current Control ◽  
Reluctance Motor ◽  
Dc Excitation ◽  
Sinusoidal Current ◽  
Ac Excitation ◽  
Control Constant

The objective of this paper is to investigate the performance of 8/6 switched reluctance motor (SRM) when excited with sinusoidal voltage. The conventional R dump converter provides DC excitation with the help of capacitor. In this paper the converter used is the modified R dump converter without DC link capacitor providing AC or sinusoidal excitation. Torque ripple and speed ripple are investigated based on hysteresis current control. Constant and sinusoidal current references are considered for comparison in both DC and AC excitation. Extensive theoretical and experimental investigations are made to bring out the merits and demerits of AC versus DC excitation. It is shown that the constructionally simple SRM can be favorably controlled with simple R dump converter with direct AC excitation without need for DC link capacitor. A 4-phase 8/6 0.5 kW SRM is used for experimentation.

scholarly journals Hybrid intelligent controller based torque ripple minimization in switched reluctance motor drive

2021 ◽  
Vol 10 (3) ◽  
pp. 1193-1203
Author(s):  
V. Pushparajesh ◽  
Nandish B. M. ◽  
H.B. Marulasiddappa
Keyword(s):  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Motor Drive ◽  
Switched Reluctance ◽  
Neural Network Controller ◽  
Wide Range ◽  
Reluctance Motor ◽  
Conventional Technology ◽  
Drive Speed ◽  
Selection Of

An inherent torque ripple characterizes switched reluctance technology from conventional technology. The ultimate aim of this paper is to reduce the torque ripple of the switched reluctance motor drive using genetic neural network controller based direct torque scheme. In the proposed controller network appropriate bits of data are chosen for training and testing. The proper selection of the learning rate and momentum will help in weight adjustment. Here the error is reduced which proves that the selection of voltage vectors from the vector table is precise and its results in better torque response over a wide range of speed. The simulation results reveal that the torque ripples vary between 3.25% to 1.7% for the variation in load torque and the drive speed. The experimental results for the proposed controller reveal that the torque ripple varies between 3.7% to 2.1%. Both the simulation and hardware results illustrate the efficiency of the controller.

scholarly journals ANFIS based speed and current control with torque ripple minimization using hybrid SSD-SFO for switched reluctance motor

2022 ◽  
Vol 49 ◽  
pp. 101712
Author(s):  
Jayanta Mukhopadhyay ◽  
Sumana Choudhuri ◽  
Samarjit Sengupta
Keyword(s):  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Current Control ◽  
Switched Reluctance ◽  
Reluctance Motor

scholarly journals A simplified hysteresis current control for cascaded converter fed switched reluctance motor

2019 ◽  
Vol 9 (6) ◽  
pp. 5095
Author(s):  
Anuradha Devi Tellapati ◽  
Malligunta Kiran Kumar
Keyword(s):  
Control Method ◽  
Switched Reluctance Motor ◽  
Industrial Applications ◽  
Current Control ◽  
Switched Reluctance ◽  
Hysteresis Current Control ◽  
Switching Losses ◽  
Cascaded Converter ◽  
Reluctance Motor ◽  
Power Switches

<p>Simple constructional features with no windings on rotor circuit and robustness make switched reluctance motor (SRM) a most used motors in industrial applications. Peak motor voltage rating depends on the rated voltage of the power switches. In conventional asymmetrical converter driving SRM, voltage rating of the motor depends on rating of power electronic switches in converter. Demand to rise the motor rating insists to put pressure on converter switching components which results in increased switching losses. A cascaded converter topology for SRM reduces the rating of switching components as compared to conventional converters for SRM. This paper presents a cascaded converter fed SRM drive with reduced switching losses. The paper presents a simplified hysteresis current control (HCC) for cascaded converter fed SRM. Simplified HCC control method reduces switching losses as HCC is applied to only one bridge of cascaded converter. Though the performance of the SRM remains same with cascaded converter fed SRM with HCC applied to only one bridge or to two bridges and with conventional asymmetrical converter, the switching losses are reduced to a great extent when HCC applied to one bridge of cascaded converter fed SRM. Performance of SRM is illustrated with conventional asymmetrical converter fed SRM and is compared to cascaded converter while HCC applied to only one bridge and applied to two bridges of cascaded converter. Proposed work is simulated using MATLAB/SIMULINK and results are presented.</p>

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