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提出了一种用于单相有源电力滤波器的全数字式混合电流控制方案.该混合电流控制方案结合无差拍控制以及双模结构重复控制以实现优异的稳态性能和动态特性.区别于传统方案,采用该方案的有源电力滤波器可消除电网中存在的奇次和偶次谐波.给出了该混合电流控制方案的详细设计原则,并进行了稳定性分析.在此基础上,提出了混合电流控制结合谐振控制器的一种优选方案以消除电网中的特定次谐波,并讨论了谐振控制与几种重复控制的内在联系.实验结果验证了电流控制方案在有源电力滤波器中的优点和有效性.
An all-digital hybrid current control scheme for single-phase active power filter is proposed.The hybrid current control scheme combines no-beat control and dual-mode repetitive control to achieve excellent steady-state performance and dynamic characteristics. In the traditional scheme, the active power filter using this scheme can eliminate the odd and even harmonics existing in the power grid.The detailed design principle of the hybrid current control scheme is given and the stability analysis is carried out. , A hybrid scheme of current control and resonance controller is proposed to eliminate the specific subharmonic in the power system and the inherent relationship between the resonant control and several repetitive control is discussed.The experimental results show that the current control scheme has the advantages in active Power filter in the advantages and effectiveness.