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首页> 外文期刊>Electric power systems research >New Single-Stage Single-Phase Three-Input DC-AC Boost Converter for Stand-Alone Hybrid PV/FC/UC Systems
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New Single-Stage Single-Phase Three-Input DC-AC Boost Converter for Stand-Alone Hybrid PV/FC/UC Systems

机译：适用于独立混合PV / FC / UC系统的新型单级单相三输入DC-AC Boost转换器

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摘要

This paper presents a new single-stage single-phase three-input DC-AC boost converter for stand-alone hybrid PV/FC/UC systems. The proposed converter enjoys a non-isolated single power conversion stage, which interfaces two unidirectional input ports for PV and FC sources and two bidirectional ports for DC and resistive load. It only needs six power switches and can directly step-up the low level input dc voltages into a high level output sinusoidal voltage without needing any output filtration stage. In fact, the proposed strategy presents a structure consisting of four dc boost converters, which are actively controlled in order to produce two output dc-biased sinusoidal voltages across the load. In this way, MPPT of the PV source, regulating the FC power and autonomous charging/discharging of the UC are accessible, while a pure sinusoidal voltage is generated at the output port. Moreover, regarding the maximum available PV power and the demanded load power a useful power management control scheme is proposed to exploit the FC and UC in their optimal operating points. Due to the multi-input multi-output (MIMO) inherent aspect of the proposed converter, pole-placement control strategy is applied to the proposed converter. The validity and effectiveness of the proposed converter and its control performance are verified by simulation and experimental results under different operating conditions. (C) 2015 Elsevier B.V. All rights reserved.
机译：本文提出了一种用于独立混合PV / FC / UC系统的新型单级单相三输入DC-AC升压转换器。拟议的转换器具有一个非隔离的单功率转换级，该接口连接两个用于PV和FC源的单向输入端口以及两个用于DC和电阻性负载的双向端口。它仅需六个电源开关，即可将低电平输入直流电压直接升压为高电平输出正弦电压，而无需任何输出滤波级。实际上，所提出的策略提出了一种由四个直流升压转换器组成的结构，这些升压转换器受到主动控制，以便在负载两端产生两个输出直流偏置正弦电压。这样，就可以访问PV电源的MPPT，调节FC功率和UC的自动充电/放电，同时在输出端口生成纯正弦电压。此外，关于最大可用PV功率和需求的负载功率，提出了一种有用的功率管理控制方案，以在FC和UC的最佳工作点上使用它们。由于所提议的转换器的多输入多输出（MIMO）固有方面，极点放置控制策略被应用于所提议的转换器。通过在不同工况下的仿真和实验结果验证了所提出的转换器的有效性和有效性及其控制性能。 （C）2015 Elsevier B.V.保留所有权利。

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