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Active disturbance rejection-based decentralised sensor fault-tolerant control in DC microgrids.
Ahmed M I Mohamad1, Amr M Ibrahim2, Ehab H E Bayoumi3
1Department of Electrical Power & Machines, Faculty of Engineering, Ain Shams University, Cairo, 11517, Egypt. a.mohy@eng.asu.edu.eg.
Scientific Reports
|April 15, 2026
Summary
This study introduces a decentralized Active Disturbance Rejection Control (ADRC) for low-voltage DC (LVDC) microgrids. It enhances stability and resilience against sensor faults without needing fault detection.
Area of Science:
- Electrical Engineering
- Control Systems
- Power Systems
Background:
- Low-voltage DC (LVDC) microgrids offer advantages in control, efficiency, and renewable integration.
- LVDC microgrid stability is challenged by sensor faults, parameter uncertainty, and equipment failures.
- Disturbance-rejection and robust control methods enhance microgrid resilience.
Purpose of the Study:
- To propose a decentralized sensor fault-tolerant control approach for islanded LVDC microgrids.
- To utilize Active Disturbance Rejection Control (ADRC) for enhanced microgrid stability and resilience.
Main Methods:
- Implementation of a decentralized Active Disturbance Rejection Control (ADRC) strategy.
- Utilizing an extended state observer to estimate and compensate for lumped disturbances.
- Mathematical modeling and analytical control formulation for fault scenarios.
Main Results:
- The ADRC controller maintains DC grid stability despite unknown and time-variant sensor faults.
- Demonstrated superior voltage regulation, faster transient recovery, and enhanced robustness compared to PI and ellipsoidal-based methods.
- Simulation studies confirmed increased reliability and resilience under realistic sensor fault conditions.
Conclusions:
- The proposed decentralized ADRC approach effectively enhances the fault tolerance of LVDC microgrids.
- ADRC provides a robust solution for maintaining stability and performance during sensor faults.
- This method improves the overall reliability and resilience of modern power distribution systems.
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