In inductive power transfer (IPT) systems, mutual-inductance perturbation and load variation seriously affect system output performance and stability requirements. The generalized state-space averaging model of SP-IPT system is first introduced. The open-loop characteristics and output performance under parameter disturbances are analyzed afterwards. Then the perturbation model of SP-IPT system that contains right-half-plane zeroes is described by coprime factorization. The input/output variables used in two-degree-of-freedom (2DOF) H∞ robust control are also selected and defined based on the perturbation model, and further the state-space realization of generalized plant is deduced. Finally, the simulation and experiment are carried out based on the 2DOF H∞ robust controller. The results show that via the control action of 2DOF H∞ robust controller, although the dynamic response performance of closed-loop perturbation system may deviate from the expected target, but the influence of mutual-inductance and load perturbations on the steady tracking performance for preset reference input can be effectively inhibited, which satisfies the system robust stability requirements.
李砚玲, 杜浩, 杨鸣凯, 何正友. 基于互质因子分解的感应电能传输系统双自由度H∞ 控制[J]. 电工技术学报, 2018, 33(20): 4746-4755.
Li Yanling, Du Hao, Yang Mingkai, He Zhengyou. Two-Degree-of-Freedom H∞ Control for Inductive Power Transfer System Based on Coprime Factorization. Transactions of China Electrotechnical Society, 2018, 33(20): 4746-4755.
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2018, Vol. 33 
