【摘要】 当前并网动力电池组测试设备组网方式大多为交流微网,该系统组成架构具有能量回收效率低、测试变流器拓扑组成复杂、控制算法繁琐等特点。本文提出一种基于动力电池组测试设备的交直流混合微网发电系统,主要由储能系统、测试用双向DC?DC变换器、网侧负载、交流电网五个部分组成。此混合微网结构具有较高的能量回收效率、简化的测试变流器拓扑、回收能量循环利用效率最优等特点,具有重要的意义。更多还原

【Abstract】 Nowadays, the network mode of the most energy recovery power battery testing instruments adopts AC-microgrid, which has the drawbacks of low energy recovery efficiency, complicated power circuit topology, cumbersome of the control algorithms. Aiming at these issues, a hybrid AC-DC microgrid system which is based on the power battery testing system has been put forward in this paper. The proposed scheme is composed by an energy storing system, a bidirectional DC?DC converter for test experiment, the grid-side loads, compared with conventional scheme, the proposed scheme has the merits of higher energy recovery efficiency, simplified power circuit for testing instruments.更多还原