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首页> 外文会议>Annual Conference of the IEEE Industrial Electronics Society >Sliding-Mode and Proportional-Resonant Based Control Strategy for Three-Phase Two-Leg T - Type Grid-Connected Inverters with LCL Filter
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Sliding-Mode and Proportional-Resonant Based Control Strategy for Three-Phase Two-Leg T - Type Grid-Connected Inverters with LCL Filter

机译：具有LCL滤波器的三相双腿T型网格连接逆变器的滑模和比例谐振的控制策略

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摘要

In this study, sliding-mode and proportional-resonant based control strategy is proposed for three-phase two-leg T-type grid-connected inverter with LCL filter. The sliding surface function is formed by using the inverter current and capacitor voltage errors. When the inverter current and capacitor voltage feedbacks are included into the control loop, the active damping requirement is automatically resolved. The PR controllers are employed in cascaded manner to generate the references for inverter current and capacitor voltage. The use of PR controllers ensures zero steady-state error in the inverter current, capacitor voltage and grid current. In addition, since the proposed three-phase inverter has only two legs, the total switch count is reduced resulting in cheaper and reliable topology. The proposed system is validated through computer simulations which show that proposed control algorithm can achieve the control of grid currents. The total harmonic distortion level of the grid currents is in the limits of international standards.
机译：在该研究中，提出了用于具有LCL滤波器的三相双腿T型网格连接逆变器的滑模和比例共振的控制策略。通过使用逆变器电流和电容器电压误差形成滑动表面功能。当逆变器电流和电容电压反馈包括在控制回路中时，自动解析有源阻尼要求。 PR控制器以级联方式采用，以产生对逆变器电流和电容器电压的参考。 PR控制器的使用可确保逆变器电流，电容电压和电流电流中的零稳态误差。此外，由于所提出的三相逆变器仅有两条腿，因此总开关计数降低，导致更便宜和可靠的拓扑。通过计算机模拟验证所提出的系统，该计算机模拟显示所提出的控制算法可以实现电流控制的控制。电流电流的总谐波失真水平在国际标准的范围内。

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