[IEEE 2019 IEEE 10th International Symposium on Sensorless Control for Electrical Drives (SLED) - Turin, Italy (2019.9.9-2019.9.10)] 2019 IEEE 10th International Symposium on Sensorless Control for Electrical Drives (SLED) - Improved Simple I-F Open-Loop Start-up of PMSM Drives Without Speed or Position Sensor