This article presents a reduced-order generalized proportional-integral observer based resonant super-twisting sliding mode controller (RST-SMC) for the three-phase ac–dc converters. On the contrary to utilizing the proportional-integral controller in regulating the dc-link voltage, which may cause large undershoot/overshoot under the disturbance, the proposed voltage control strategy for the dc-link has high disturbance rejection ability and the settling time has been greatly reduced. In addition, the proposed RST-SMC in the current control loop not only preserve the merits of the sliding mode controller but also achieve the current tracking without steady-state error in the stationary $\alpha - \beta $ frame. The effectiveness of the proposed method has been verified by a lab-constructed experimental prototype.

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 并网功率变换器的降阶广义比例积分观测器共振超扭曲滑模控制

本文介绍了一种针对三相AC-DC转换器的基于降阶广义比例积分观测器的共振超扭曲滑模控制器（RST-SMC）。与利用比例积分控制器来调节直流母线电压可能会引起较大的下冲/过冲相反，本文提出的用于直流母线的电压控制策略具有较高的抗扰能力，并且建立时间也很长。大大减少了。此外，在电流控制回路中提出的RST-SMC不仅保留了滑模控制器的优点，而且还实现了电流跟踪，而在静止状态下没有稳态误差$ \ alpha-\ beta $框架。通过实验室构造的实验原型验证了该方法的有效性。