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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Generic Closed-Loop Controller for Power Regulation in Dual Active Bridge DC–DC Converter With Current Stress Minimization
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Generic Closed-Loop Controller for Power Regulation in Dual Active Bridge DC–DC Converter With Current Stress Minimization

机译：用于双有源桥DC-DC转换器中功率调节的通用闭环控制器，电流应力最小

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摘要

This paper presents a comprehensive and generalized analysis of the bidirectional dual active bridge (DAB) dc-dc converter using triple phase shift (TPS) control to enable closed-loop power regulation while minimizing current stress. The key new achievements are a generic analysis in terms of possible conversion ratios/converter voltage gains (i.e., Buck/Boost/Unity), per unit based equations regardless of DAB ratings, and a new simple closed-loop controller implementable in real time to meet desired power transfer regulation at minimum current stress. Per unit based analytical expressions are derived for converter ac rms current as well as power transferred. An offline particle swarm optimization (PSO) method is used to obtain an extensive set of TPS ratios for minimizing the rms current in the entire bidirectional power range of -1 to 1 per unit. The extensive set of results achieved from PSO presents a generic data pool, which is carefully analyzed to derive simple useful relations. Such relations enable a generic closed-loop controller design that can be implemented in real time avoiding the extensive computational capacity that iterative optimization techniques require. A detailed Simulink DAB switching model is used to validate the precision of the proposed closed-loop controller under various operating conditions. An experimental prototype also substantiates the results achieved.
机译：本文对使用三相移（TPS）控制的双向双有源桥（DAB）DC-DC转换器进行了全面的综合分析，以实现闭环功率调节，同时最大程度地减小电流应力。关键的新成就是根据可能的转换比/转换器电压增益（即Buck / Boost / Unity）进行通用分析，无论DAB额定值如何，都基于每单位的方程式，以及一种新的简单的闭环控制器，可实时实现在最小电流应力下满足所需的功率传输规定。针对转换器的交流有效电流和传输的功率，得出了基于单位的解析表达式。离线粒子群优化（PSO）方法用于获得广泛的TPS比率集，以使每单位-1至1的整个双向功率范围内的均方根电流最小。从PSO获得的广泛结果集提供了一个通用数据池，对其进行了仔细分析以得出简单有用的关系。这样的关系使得可以实时实施通用的闭环控制器设计，从而避免了迭代优化技术所需的大量计算能力。详细的Simulink DAB切换模型用于验证所提出的闭环控制器在各种操作条件下的精度。实验原型也证实了所获得的结果。

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