A Novel Technique to Correct the Unwanted Zero Position Signal of Faulty Encoder for Accurate Speed and Position Estimation of PMSM Drive

Gandhi, Raja; Sankararao, Edi; Mishra, Pratikanta; Roy, Rakesh

doi:10.1007/s40998-023-00662-1

Iran J Sci Technol Trans Electr Eng

2023

DOI: 10.1007/s40998-023-00662-1

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A Novel Technique to Correct the Unwanted Zero Position Signal of Faulty Encoder for Accurate Speed and Position Estimation of PMSM Drive

Raja Gandhi,

Edi Sankararao,

Pratikanta Mishra

et al.

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2024

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An Improved Current Signal Extraction-Based High-Frequency Pulsating Square-Wave Voltage Injection Method for Interior Permanent-Magnet Synchronous Motor Position-Sensorless Control

Meng,

Wu,

Zhang

et al. 2024

Electronics

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The high-frequency (HF) voltage injection method is widely applied in achieving position-sensorless control for interior permanent-magnet synchronous motors (IPMSMs). This method necessitates precise and rapid extraction of the current signal for accurate position estimation and field-oriented control (FOC). In the traditional methods, the position error signal and fundamental current are extracted from the current signal using band-pass filters (BPFs) and low-pass filters (LPFs), or a method based on time-delay filters. However, the traditional extraction method falls short in ensuring simultaneous dynamic performance and accuracy, particularly when the switching frequency is limited or when encountering harmonic and noise interference. In this article, a novel HF pulsating square-wave voltage injection method based on an improved current signal-extraction strategy is proposed to improve the extraction accuracy while maintaining good dynamic performance. The newly devised current signal-extraction method is crafted upon a notch filter (NF). Through harnessing NF’s effective separation characteristics of specific frequency signals, the current signal is meticulously processed. This process yields the extraction of the position error signal and fundamental-current component, crucial for accurate position estimation and motor FOC. Simulation and hardware-in-the-loop (HIL) testing are conducted to validate the effectiveness of the proposed approach.

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An Improved Current Signal Extraction-Based High-Frequency Pulsating Square-Wave Voltage Injection Method for Interior Permanent-Magnet Synchronous Motor Position-Sensorless Control

Meng,

Wu,

Zhang

et al. 2024

Electronics

View full text Add to dashboard Cite

show abstract

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A Novel Technique to Correct the Unwanted Zero Position Signal of Faulty Encoder for Accurate Speed and Position Estimation of PMSM Drive

Cited by 1 publication

References 28 publications

An Improved Current Signal Extraction-Based High-Frequency Pulsating Square-Wave Voltage Injection Method for Interior Permanent-Magnet Synchronous Motor Position-Sensorless Control

An Improved Current Signal Extraction-Based High-Frequency Pulsating Square-Wave Voltage Injection Method for Interior Permanent-Magnet Synchronous Motor Position-Sensorless Control

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