Discrete time modeling of output disturbances in the dual active bridge converter
Discrete time modeling of output disturbances in the dual active bridge converter
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DOI：
10.1109/apec.2014.6803455
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
D. Costinett;R. Zane;D. Maksimović
中科院分区：
文献类型：
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作者：
D. Costinett;R. Zane;D. Maksimović
双有源桥（DAB）变换器动态特性的离散时间小信号建模是一种有用的分析工具，因为它能够明确地包含零电压开关（ZVS）间隔期间的行为，并且有利于数字补偿器的直接设计。虽然之前已经对控制到输出的传递函数进行了建模，但是还没有提出DAB转换器的输出阻抗的精确模型，该模型考虑了转换器在开关间隔期间的行为。DAB输出阻抗的离散时间模型的开发和测试对1 MHz，50-4 V，10 W DAB转换器的实验结果。然后，该模型扩展到分析负载电流的阶跃变化异步的离散时间采样实例。
The small-signal modeling of dual active bridge (DAB) converter dynamics in discrete time is a useful analysis tool due to the ability to incorporate behavior during zero-voltage switching (ZVS) intervals explicitly, and is advantageous for the direct design of digital compensators. While the control-to-output transfer function has been modeled previously, accurate models of the output impedance of the DAB converter which account for the converter behavior during switching intervals have not been proposed. A discrete time model of the DAB output impedance is developed and tested against experimental results for a 1 MHz, 50-to-4 V, 10 W DAB converter. The model is then extended to the analysis of load current step changes asynchronous to the discrete time sampling instances.