<p>An enhanced sliding mode current controller (ESMCC) for grid-connected permanent magnet synchronous generator (PMSG)-based wind turbines is proposed in this paper to improve the power quality. To achieve this, a sliding surface is introduced. Then, a modified exponential reaching law is proposed using an exponential term and a boundary layer function. Moreover, by utilizing the saturation function, chattering is significantly reduced. Additionally, an extended state observer is integrated into the proposed ESMCC, which enhances system stability. Furthermore, the proposed ESMCC is implemented on both machine side and grid side back-to-back converters to regulate the control inputs of <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\:{V}_{dm},\:{V}_{qm},\:{V}_{di}\)</EquationSource> </InlineEquation> and <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\:{V}_{qi}\)</EquationSource> </InlineEquation>. In addition, the stability of the proposed control strategy is evaluated through the Lyapunov function approach. The proposed ESMCC has the ability to mitigate various levels of system disturbances and parameter uncertainties. Finally, the proposed ESMCC is evaluated through simulation of a 1.5&#xa0;MW PMSG-based wind energy conversion system and a 5&#xa0;kW PMVG-based WECS experimental setup.</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

Enhanced sliding mode current control with extended state observer for power quality improvement in PMSG-based wind energy systems

  • Anto Anbarasu Yesudhas,
  • Jae Hoon Jeong

摘要

An enhanced sliding mode current controller (ESMCC) for grid-connected permanent magnet synchronous generator (PMSG)-based wind turbines is proposed in this paper to improve the power quality. To achieve this, a sliding surface is introduced. Then, a modified exponential reaching law is proposed using an exponential term and a boundary layer function. Moreover, by utilizing the saturation function, chattering is significantly reduced. Additionally, an extended state observer is integrated into the proposed ESMCC, which enhances system stability. Furthermore, the proposed ESMCC is implemented on both machine side and grid side back-to-back converters to regulate the control inputs of \(\:{V}_{dm},\:{V}_{qm},\:{V}_{di}\) and \(\:{V}_{qi}\) . In addition, the stability of the proposed control strategy is evaluated through the Lyapunov function approach. The proposed ESMCC has the ability to mitigate various levels of system disturbances and parameter uncertainties. Finally, the proposed ESMCC is evaluated through simulation of a 1.5 MW PMSG-based wind energy conversion system and a 5 kW PMVG-based WECS experimental setup.