Modeling and controller performance assessment for a switched reluctance motor drive based on setpoint relay

Area of Science:

• Electrical Engineering
• Control Systems
• Motor Drives

Background:

• Switched reluctance motors (SRMs) offer advantages but require precise current control.
• Accurate on-line modeling is crucial for optimizing SRM drive performance.
• Existing control methods may lack robustness and autotuning capabilities.

Purpose of the Study:

• To present a novel approach for accurate on-line modeling of SRM drives.
• To implement and evaluate a simple autotuning technique for SRM drives using a PWM controller.
• To validate the proposed method against conventional PI and Internal Model Control (IMC) strategies.

Main Methods:

• Development of a novel current control method with on-line modeling for SRMs.
• Implementation of a simple autotuning technique utilizing a PWM controller.
• Comparative analysis of control structures (PWM, PI, IMC) using robustness measures.
• Hardware prototype implementation using a digital signal processor for a 12/8, three-phase SRM.

Main Results:

• The proposed PWM controller enables accurate on-line modeling of the SRM drive.
• Experimental validation confirms the effectiveness of the current loop control.
• Robust control analysis demonstrates stability and performance improvements.

Conclusions:

• The novel PWM-based current control and autotuning method effectively models and controls SRM drives.
• The approach offers a robust and high-performance solution for SRM applications.
• Experimental results validate the proposed method's superiority in current loop performance.