Abstract
HF signal injection method can obtain the rotor position accurately by tracking the rotor saliency at low and zero speed. However, this method arouses the high-frequency component in the induced current, causing audible noise and electromagnetic interference (EMI) problems. The audible noise generated by injected HF signals is uncomfortable to hear, which inevitably restricts the implementation of this kind of sensorless control scheme in industrial and household applications. Adopting the idea of noise reduction in power converters, random HF signal injection method is a good way for noise suppression.
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Wang, G., Zhang, G., Xu, D. (2020). Pseudo-Random-Frequency Signal Injection for Acoustic Reduction. In: Position Sensorless Control Techniques for Permanent Magnet Synchronous Machine Drives. Springer, Singapore. https://doi.org/10.1007/978-981-15-0050-3_4
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DOI: https://doi.org/10.1007/978-981-15-0050-3_4
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