【摘要】 全桥多输入变换器可以实现多个输入源同时或分时向负载传输能量,但每一路输入均需要一个一次绕组。随着输入源数量的增加,一次绕组的数量也相应增加,使得变压器的制作变得很困难。本文根据脉冲电压源单元组合原则,将非隔离脉冲电压源单元组合进行串联或并联组合,直接替代单输入全桥变换器的输入源,获得了一簇单一次绕组电压源型全桥多输入变换器。该类变换器仅需要一个一次绕组,变压器结构非常简单,易于制作。本文以两个Buck型脉冲电压源单元组合串联构成的单一次绕组双输入全桥变换器为例,分析其工作原理和控制策略,阐述脉冲电压源单元组合和主变换器中开关管开关时序对滤波电感电流脉动的影响,最后通过原理样机进行实验验证。更多还原

【Abstract】 Multi-input full-bridge converter with multiple primary windings can power energy from multiple input sources to the load simultaneously or independently.However,with the increase of the number of input sources,the number of the primary windings increases as well,which results in complex structure of the transformer.In order to simplify the transformer structure,this paper proposes a family of single-primary-winding(SPW) voltage-fed multi-input full-bridge converters,which are derived by replacing the input voltage source of the single-input full-bridge converter with the series or parallel-connected non-isolated pulsating voltage source cells(PVSCs).A SPW voltage-fed doubleinput full-bridge converter with two buck PVSCs in series is analyzed as the example.The operation principle and control strategy are illustrated,and the filter inductor current ripple with different switching sequences of the PVSCs is analyzed.Finally,a prototype is built and tested,and the experimental results are presented.更多还原