Sensorless Control of Permanent magnet in-wheel motor for EVs Using Global Fast Terminal Sliding Mode Observer
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View abstract on PubMed
Summary
This summary is machine-generated.This study introduces a novel sensorless controller for electric vehicle permanent magnet in-wheel motors (PMIWMs) using a global fast terminal sliding mode observer (GFTSMO) and phase-locked loop (PLL) estimation. The method enhances control stability and precision during sensor failures.
Area Of Science
- Electrical Engineering
- Control Systems
- Automotive Technology
Background
- Permanent magnet in-wheel motors (PMIWMs) are crucial for electric vehicles (EVs).
- Position sensor failures in EVs can compromise motor control and safety.
- Existing sensorless control methods often suffer from chattering and oscillations.
Purpose Of The Study
- To develop a high-precision sensorless controller for PMIWMs in EVs.
- To address unexpected position sensor failures.
- To improve the robustness and accuracy of motor control under fault conditions.
Main Methods
- Implementation of a global fast terminal sliding mode observer (GFTSMO) to minimize chattering.
- Integration of a phase-locked loop (PLL) estimation scheme to replace conventional arc-tangent methods.
- Analysis of GFTSMO stability using Lyapunov functions.
Main Results
- The proposed GFTSMO significantly reduces chattering compared to traditional sliding mode observers (SMO).
- The PLL estimation scheme enhances precision and robustness by avoiding high-frequency oscillations.
- Simulations and experimental tests confirm rapid and accurate speed tracking without overshoot.
Conclusions
- The developed sensorless control method ensures stable operation of PMIWMs even with sensor failures.
- This approach offers a reliable solution for situations where motor sensors are difficult to install.
- The technique enhances the overall reliability and applicability of sensorless control in electric mobility.
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