Abstract:The high-frequency injection (HFI) method is commonly used for sensorless control of synchronous reluctance motors (SynRMs) at low speeds. Injecting a high-frequency (HF) signal in a predefined direction, referred to as the d-axis, and further demodulating the excited signal in the q-axis are a popular sequence for SynRM position tracking. Injection in the q-axis is not usually considered due to its potential to increase torque ripple. This article proposes a generalized HF pulsating voltage injection approach… Show more
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