Restart Strategy for Sensorless PMSM Drive with Single Zero Voltage Vector in Railway Application
2023 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)(2023)
摘要
This paper proposes a control algorithm and a restart method for permanent magnet synchronous motors without position sensors in railway application. The method combines a Luenberger observer and a sensorless observation method based on PLL, allowing for accurate observation of rotor position and speed within the high-speed range of the motor. Additionally, the method utilizes the setting of the contactor to estimate the initial position and speed during the restart process using the current generated by a single zero voltage vector, enabling precise estimation of the motor's speed and position in the flux-weakening region. The effectiveness of the proposed algorithm is demonstrated through simulation.
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关键词
- rotor position estimation scheme,Luenberger observer,PLL,restart strategy,single zero voltage vector
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