Multi-sliding mode current disturbance suppression scheme based model reference adaptive system for sensorless
Sai Zhang1, Anwen Shen1, Xin Luo1
1The Key Laboratory of Electronic Power and Power Transformation, School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China.
ISA Transactions
|January 30, 2023
Summary
This study introduces a novel multi-sliding mode scheme using a model reference adaptive system (MRAS) to enhance sensorless speed and angle estimation for permanent magnet synchronous motors (PMSM). The method effectively suppresses current disturbances, improving PI control performance and motor accuracy.
Area of Science:
- Electrical Engineering
- Control Systems
- Motor Drives
Background:
- Sensorless operation of permanent magnet synchronous motors (PMSM) is crucial for cost-effectiveness and reduced complexity.
- Accurate estimation of speed and angle is vital for effective PMSM control, but sensorless methods are susceptible to current disturbances.
- Existing methods often struggle to adequately suppress disturbances, impacting control precision.
Purpose of the Study:
- To propose and validate a novel multi-sliding mode scheme for enhancing sensorless speed and angle estimation in PMSM.
- To improve the robustness of proportional integral (PI) control against current disturbances in sensorless PMSM operation.
- To provide a detailed quantitative analysis of current disturbance suppression using the proposed MRAS-based multi-sliding mode scheme.
Main Methods:
- Development of a multi-sliding mode scheme integrated with a model reference adaptive system (MRAS).
- Application of proportional integral (PI) control within the MRAS framework.
- Quantitative analysis of current disturbance effects and suppression capabilities of various sliding-mode schemes.
Main Results:
- The proposed multi-sliding mode MRAS scheme effectively suppresses current disturbances in sensorless PMSM operation.
- Demonstrated indirect improvement in the current anti-interference capability of the PI controller.
- Experimental validation confirmed the feasibility of the proposed scheme and the theoretical analysis.
Conclusions:
- The multi-sliding mode MRAS scheme offers a robust solution for accurate sensorless speed and angle estimation in PMSM.
- The method significantly enhances the performance and reliability of PMSM drives operating without sensors.
- This approach provides a valuable contribution to advanced motor control techniques.
Keywords:
Current disturbanceModel reference adaptive systemMulti-sliding modePermanent magnet synchronous motorMore Related Videos
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