Electrical distribution systems comprising different power sources and loads, such as electric vehicles, aircraft electrical distribution systems, and residential microgrids, need new power conversion architectures. Multiport converters are an alternative to conventional multiconverter systems. This work studies a modular multiactive bridge (MMAB) converter, which is a multiport converter based on the connection of active bridges and independent transformers. The converter is bidirectional, fully modular, and scalable. It allows the connection of multiple power sources and loads that may change its power flow direction, allowing hot connection and disconnection of modules. The control of the power flow in each port depends on the relative phase shift among the control pulses of the other active bridges. An iterative algorithm is developed and implemented in a digital device to control the converter in real time. Besides theoretical analysis, the main characteristics of the converter have been validated in a lab prototype with five modules. The experimental results validate the theoretical predictions. Power distribution among the modules has been kept under 9% of error with respect to the desired value, considering an open-loop control.

中文翻译：

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一种模块化多有源桥式变换器的配电算法及稳态运行分析

包含不同电源和负载的配电系统，例如电动汽车、飞机配电系统和住宅微电网，需要新的电源转换架构。多端口转换器是传统多转换器系统的替代品。本工作研究了模块化多有源电桥（MMAB）转换器，它是一种基于有源电桥和独立变压器连接的多端口转换器。该转换器是双向的、完全模块化且可扩展的。它允许连接可能改变其潮流方向的多个电源和负载，允许模块的热连接和断开。每个端口中功率流的控制取决于其他有源电桥的控制脉冲之间的相对相移。在数字设备中开发并实施了一种迭代算法，以实时控制转换器。除了理论分析外，转换器的主要特性已在具有五个模块的实验室原型中得到验证。实验结果验证了理论预测。考虑到开环控制，模块之间的功率分配相对于所需值保持在 9% 的误差以下。