LIN, T. and ZHU, Z., 2014. Sensorless operation capability of surface-mounted permanent magnet machine based on high-frequency signal injection methods. IN: Proceedings of 2014 9th IEEE International Conference on Ecological Vehicles and Renewable Energies (EVER 2014), Monte Carlo, Monaco, 25-27 March 2014, DOI: 10.1109/EVER.2014.6844133.
In this paper, the investigation is focused on
sensorless control capability of a surface-mounted
permanent magnet (SPM) machine. To implement the
high-frequency carrier signal injection-based sensorless
techniques, the machine saliency is an essential
requirement. Hence, the machine saliency information of
the prototype SPM machine has experimentally been
analyzed and measured without the need of any
information of parameters under various load conditions
due to the magnetic saturation by the fundamental
excitation. The effectiveness of the sensorless capability is
verified by the experiments based on the high-frequency
rotating and pulsating signal injection-based sensorless
control strategies at zero and low speeds.