Performance of HF signal injection techniques for zero-low-frequency vector control of induction Machines under sensorless conditions |
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Authors: | Caruana C Asher GM Sumner M |
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Affiliation: | Sch. of Electr. & Electron. Eng., Univ. of Nottingham, UK; |
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Abstract: | A number of HF signal injection techniques have been proposed for the sensorless zero-low-frequency control of induction machines (IMs). This paper reviews these methods and experimentally investigates their performance under true sensorless conditions for a standard cage IM with closed rotor slots. Implementation techniques covering hybrid methods, saliency decoupling, and saliency orientation are discussed. The paper concludes that, while HF techniques can outperform observer-based methods at low frequencies, the robust performance required for industrial application still presents a research challenge. |
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