Scholarlink

<p>To address the issue of increased harmonic content in the system output voltage caused by nonlinear loads in wind power inverter system, a random excitation modulation scheme is proposed for grid connection. Unlike traditional filtering methods, this strategy does not attempt to eliminate unnecessary frequency components from the signal, but instead introduces a power signal to effectively cancel harmonic voltages at the inverter. This reduces the energy of harmonic separation in the DC power supply directly. Simulation results show that the total harmonic distortion (THD) of the A, B, and C three-phase voltages are reduced to 1.65%, 1.20%, and 1.38%, respectively, while experimental results show a reduced to 4.59%, 4.53%, and 4.41%, respectively. Both simulation and experimental results demonstrate that the proposed method can effectively reduce the THD of the output voltage without compromising system stability, confirming the feasibility of the approach.</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

The harmonic suppression with stochastic excitation to reference voltage’s dq-axis in wind turbine with VSG

  • 期刊论文

  • 发表日期：

    2025年3月24日

查看全文
  • Lufeng Zhang,
  • Jiaqing Ma,
  • Changsheng Chen,
  • Tao Qin,
  • Zhiqin He,
  • Qinmu Wu,
  • Hongju Liu,
  • Yongjie Li

摘要

To address the issue of increased harmonic content in the system output voltage caused by nonlinear loads in wind power inverter system, a random excitation modulation scheme is proposed for grid connection. Unlike traditional filtering methods, this strategy does not attempt to eliminate unnecessary frequency components from the signal, but instead introduces a power signal to effectively cancel harmonic voltages at the inverter. This reduces the energy of harmonic separation in the DC power supply directly. Simulation results show that the total harmonic distortion (THD) of the A, B, and C three-phase voltages are reduced to 1.65%, 1.20%, and 1.38%, respectively, while experimental results show a reduced to 4.59%, 4.53%, and 4.41%, respectively. Both simulation and experimental results demonstrate that the proposed method can effectively reduce the THD of the output voltage without compromising system stability, confirming the feasibility of the approach.