Robust controller design for a series resonant power converter is presented when load variation and unregulated input line voltage perturbation are taken into consideration. The perturbation of unregulated line voltage is treated as an exogenous disturbance and the load variation as a structured uncertainty of the converter. An averaged model, including disturbance and model uncertainty, is then derived. Two kinds of /spl mu/ synthesis-D-K and /spl mu/-K iteration schemes-are applied to design robust controllers to diminish the susceptibility of the regulated voltage to perturbations of load variation and unregulated line voltage. In addition, a classical controller is also designed for performance comparison. Finally, simulations and experimental results are presented to verify the feasibility of the robust control theory.
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机译:当考虑到负载变化和不受调节的输入线电压扰动时,提出了一种用于串联谐振功率转换器的鲁棒控制器设计。不受控制的线路电压的扰动被视为外部干扰,而负载变化则被视为转换器的结构不确定性。然后得出包括干扰和模型不确定性在内的平均模型。两种/ spl mu /合成D-K和/ spl mu / -K迭代方案可用于设计鲁棒的控制器,以减少调节电压对负载变化和未调节线路电压的扰动的敏感性。此外,还设计了经典控制器用于性能比较。最后,通过仿真和实验结果验证了鲁棒控制理论的可行性。
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