The high-frequency (HF) injection technique is a pivotal method for estimating the rotor position of permanent magnet synchronous motors in the low-speed region. However, the conventional single-frequency HF voltage injection approach will induce pronounced noise and even cause Electro Magnetic Compatibility (EMC) issues. To address this issue, a random high-frequency (RHF) square wave injection technique is proposed in this paper, which broadens the power spectral density (PSD) and eliminates sharp noise by combining multiple frequencies. In the signal processing process, a filterless signal separation strategy is adopted to extract the fundamental and HF components of currents so as to improve system bandwidth. An innovative demodulation strategy is also proposed, and a linear extended state observer (ESO) is designed according to the mechanical equations of an interior permanent magnet synchronous motor (IPMSM) to determine the rotor position and speed. In conclusion, the feasibility of the scheme is verified by a series of simulation experiments.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Sensorless Control of Permanent Magnet Synchronous Motor Based on Random High-Frequency Square Wave Injection


    Contributors:
    Zhang, Hongwei (author) / Yu, Yong (author) / Xu, Dianguo (author)


    Publication date :

    2024-10-10


    Size :

    596364 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Sensorless Control of Permanent Magnet Synchronous Motor for HEV Applications

    Abourida, S. / Xu, J. / Lambert, G. et al. | British Library Conference Proceedings | 2001



    Sensorless control of permanent magnet synchronous motor for HEV applications

    Abourida,S. / Xu,J. / Lambert,G. et al. | Automotive engineering | 2001