使用闭环电流控制技术的开关磁阻电机性能分析

IF 0.6 Q3 ENGINEERING, MULTIDISCIPLINARY Jurnal Kejuruteraan Pub Date : 2023-11-30 DOI:10.17576/jkukm-2023-35(6)-12
C. L. Reddy, P. S. Kumar, J. V. G. R. Rao, M. Sharanya
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摘要

本文介绍了 6/4 三相开关磁阻电机在电流、磁通、转矩和速度方面的性能分析。当电机速度较低时,电流上升很快。如果转速较高,则电流上升较低。在低速区域,电流可通过斩波/磁滞电流控制模式进行控制。在这种模式下,+Vdc 和 -Vdc 电压的施加会将电流限制在一定范围内。带宽可围绕电流参考值设计。上下限可以根据参考电流来设计。在达到基速后,我们必须保持电流不变,但由于速度变大,电流无法快速增加,因此在这一区域,与其保持电流恒定,不如考虑功率恒定。当速度很大时,这种模式就不可取了。因此,我们仍然必须保持功率,电流必须增加,所以我们要提前一点切换,这个角度被称为提前角。电压应用提前的角度就是提前角。提前角控制可以使电流增加只发生在低电感区域。提前角只能增加到一定的角度,即达到电感最小点的较低值。通过应用闭环电流控制技术,使用 MATLAB/ Simulink 对 6/4 3 相开关磁阻电机进行了仿真。对不同速度模式下的 SRM 进行了详细控制,并对结果进行了分析。
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Performance Analysis of Switched Reluctance Motor by Using Closed Loop Current Control Technique
This paper presents the performance analysis of an 6/4 3-phase switched reluctance motor in terms of current, flux, torque and speed. When the speed of the motor is low the current rises quickly. If the speed is large the increase in current is low. In low-speed region, the current can be controlled by using chop/hysteresis current control mode. In this mode a voltage of +Vdc and -Vdc is applied in such way the current is limited to a band. The bands can design around the reference value of current. The upper and lower bands can be designed based on the reference current. After the base speed we have to maintain current, current can’t increase quickly because speed becomes large, so in this region instead of keeping current constant the power is to be considered constant. When the speed is large this mode is not preferable. So still we have to maintain the power current has to build up, so we switch little earlier that angle is called advance angle. Angle by which voltage application is advanced that angle is the advance angle. The advance angle control can be used in such way that the current increase will happen in the lower inductance region only. The advancing of angle can be increased up to certain angles only i.e up to the lower value of inductance minimum point. The simulation has been carried out for 6/4 3-phase switched reluctance motor using MATLAB/ Simulink by applying closed loop current control technique. The detailed control of SRM for different speed modes has been carried out and the analysis of results demonstrated.
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Jurnal Kejuruteraan
Jurnal Kejuruteraan ENGINEERING, MULTIDISCIPLINARY-
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