Scholarlink

<p>Resonance suppression for permanent magnet synchronous motors (PMSMs) with an LC sine-wave filter is usually realized by capacitor current feedback active damping (CCFAD), where motor currents information is necessary to realize field-oriented control. Instead of obtaining the motor currents by adding extra sensors, a high-precision current estimation method based on the extended state observer and second-order generalized integrator (ESO–SOGI) is proposed to reduce the system cost. A motor current observer based on a fourth-order extend state observer (ESO) is established, where a SOGI-based differential extraction of the inverter-side voltage is applied to suppress high-frequency disturbance. The parameters of the ESO–SOGI are designed according to the frequency-domain analysis. In addition, the parameters of the current loop, including the PI and active damping (AD) parameters, are designed according to the frequency response of the whole loop considering the features of ESO–SOGI. Simulation and experimental results verify the effectiveness of the proposed method.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

ESO–SOGI-based capacitor current feedback active damping for PMSM with LC sine-wave filter resonance suppression

  • 期刊论文

  • 发表日期：

    2025年9月6日

查看全文
  • Xiang Wu,
  • Yongqi Ji,
  • Chao Li,
  • Yuyang Zhang,
  • Shuo Chen,
  • Jun Yang,
  • Yingqiang Han

摘要

Resonance suppression for permanent magnet synchronous motors (PMSMs) with an LC sine-wave filter is usually realized by capacitor current feedback active damping (CCFAD), where motor currents information is necessary to realize field-oriented control. Instead of obtaining the motor currents by adding extra sensors, a high-precision current estimation method based on the extended state observer and second-order generalized integrator (ESO–SOGI) is proposed to reduce the system cost. A motor current observer based on a fourth-order extend state observer (ESO) is established, where a SOGI-based differential extraction of the inverter-side voltage is applied to suppress high-frequency disturbance. The parameters of the ESO–SOGI are designed according to the frequency-domain analysis. In addition, the parameters of the current loop, including the PI and active damping (AD) parameters, are designed according to the frequency response of the whole loop considering the features of ESO–SOGI. Simulation and experimental results verify the effectiveness of the proposed method.