限功率控制Boost多输入直流变换器型并网逆变器

发布时间：2018-05-14 06:46

本文选题：多输入直流变换器 + 全桥Boost　；参考：《中国电机工程学报》2017年20期

【摘要】：该文提出并深入研究全桥Boost多输入直流变换器型并网逆变器电路拓扑、带限功率的最大功率输出能量管理控制策略和基于箝位电容的储能电感磁饱和抑制启动方案,给出高频开关过程分析、电压传输比推导和有源箝位电路设计,获得了重要结论。该拓扑是由全桥Boost型多输入直流变换器和Buck型逆变器级联构成;该能量管理控制策略是在最大功率点跟踪电压环外加入限功率环,通过减小异常情况下变换器的储能占空比来限制直流母线电压升高;该储能电感磁饱和抑制启动方案,是以2m个开关周期为一个控制周期,高频逆变电路功率开关和有源箝位开关交替工作。设计并研制成功的1k VA双输入并网逆变器样机,具有高频隔离、多输入源同时向负载供电、占空比调节范围宽、变换效率高、新能源利用充分、可靠性高等优点。
[Abstract]:In this paper, the topology of full-bridge Boost multi-input DC / DC converter grid-connected inverter, the maximum power output energy management control strategy with limited power, and the magnetic saturation suppression startup scheme of energy storage inductor based on clamping capacitance are proposed and deeply studied. The process analysis of high frequency switch, the derivation of voltage transfer ratio and the design of active clamp circuit are given, and some important conclusions are obtained. The topology is composed of a cascade of full-bridge Boost multi-input DC / DC converters and Buck inverters, and the energy management control strategy is to add a power limiting loop to the maximum power point tracking voltage loop. The increase of DC bus voltage is limited by reducing the energy storage duty cycle of the converter under abnormal conditions, and the starting scheme of magnetic saturation suppression of the energy storage inductor is based on 2m switching cycles as a control period. High frequency inverter circuit power switch and active clamp switch alternately. A 1kVA dual-input grid-connected inverter prototype is designed and developed, which has the advantages of high frequency isolation, multiple input sources supplying power to load simultaneously, wide duty cycle adjustment range, high conversion efficiency, sufficient utilization of new energy, high reliability and so on.
【作者单位】：福建省新能源发电与电能变换重点实验室(福州大学);
【基金】：国家自然科学基金项目(61271116)~~
【分类号】：TM46

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