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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Stability Enhancement via Controller Optimization and Impedance Shaping for Dual Active Bridge-Based Energy Storage Systems
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Stability Enhancement via Controller Optimization and Impedance Shaping for Dual Active Bridge-Based Energy Storage Systems

机译：基于双极桥的能量存储系统的控制器优化和阻抗成形的稳定性增强

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摘要

This article proposes two impedance compensation methods to enhance the stability of the dual active bridge (DAB) converter-based energy storage systems (ESSs). First, the design of the traditional feedback controller of the DAB converter is revisited with consideration of stability of the DAB-based ESSs. The presented analysis reveals that due to the improper design of the DAB feedback controller, the magnitude of the DAB converter input impedance will be reduced, resulting in instability problems of the DAB-based ESSs. As a straightforward solution, the optimized design guideline of the DAB feedback controller is proposed, which can solve the instability issue of the DAB-based ESS without any additional passive components or active control loops. Second, a family of impedance shaping regulators (ISRs) is proposed to modify the input impedance of the DAB converter-the bus voltage-based ISR (BV-ISR) and the bus current-based ISR (BC-ISR). The design requirements of the BV-ISR and BC-ISR to solve the instability problems of DAB-based ESS are disclosed. The dynamic responses of the proposed methods are compared. Finally, the effectiveness of the optimized DAB controller and the ISRs are validated by the experimental results.
机译：本文提出了两种阻抗补偿方法，提高了双活性桥（DAB）基于转换器的能量存储系统（ESS）的稳定性。首先，考虑到基于DAB的ESS的稳定性，重新审视了DAB转换器的传统反馈控制器的设计。所提出的分析表明，由于DAB反馈控制器的设计不当，DAB转换器输入阻抗的幅度将减少，导致基于DAB的ESS的不稳定问题。作为直接解决方案，提出了DAB反馈控制器的优化设计指南，可以解决无需任何额外的无源组件或有源控制环路的基于DAB的eSS的不稳定问题。其次，提出了一系列阻抗成型调节器（ISR）来修改DAB转换器的输入阻抗 - 基于总线电压的ISR（BV-ISR）和总基于总线的ISR（BC-ISR）。公开了BV-ISR和BC-ISR的设计要求，以解决基于DAB的ESS的不稳定性问题。比较了所提出的方法的动态响应。最后，通过实验结果验证了优化的DAB控制器和ISR的有效性。

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