Comparative Study of Power Supply Strategies for the Variable Reluctance Machine 12/8
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Keywords:
The variable reluctance machine (MRV), current control by hysteresis, vector control based on internal control with two degrees of freedom (2DOF IMC), the simple adaptive disturbance observer (ADO)Abstract
The control of the variable reluctance machine is based on the shape of the currents when it is
supplied, but the major disadvantage of the MRV is the ripple of the torque due to the shapes of the phase
currents and the machine EMF, and this ripple of the torque is generally harmful to the proper functioning
of the device. To remedy this, we used different power supply techniques used in low and medium
voltage.
The first technique used is based on the technique of controlling the current by hysteresis; in this power
supply mode the torque ripple is not controlled but by adjusting the switching angles it can nevertheless
be minimized. However, the use of this technique has shown its limits at low and medium speed.
This led us to use another technique which is control. The second technique uses a new vector control
method based on an internal control with two degrees of freedom (2DOF IMC), this control approach
makes it possible to specify two independent degrees of freedom. in the design of the regulator, which
means it provides more flexibility to adjust performance and flexibility to adjust the behavior of the
system according to specific requirements; by adding a simple adaptive disturbance observer (ADO) to
estimate and eliminate disturbances online, it will be incorporated into the internal loop system and by
adjusting the law of adaptation gains, this strategy made it possible to improve the stability and the
convergence of the ADO.
The effectiveness of the latter proposed control strategy is demonstrated by experiments, and the results
show that the proposed method can effectively improve the control and disturbance rejection performance
of MRV drives.
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