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Design of High-Performance Stand-Alone and Grid-Connected Inverter for Distributed Generation Applications

机译:分布式发电应用的高性能独立式并网逆变器设计

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摘要

In this study, a high-performance inverter, including the functions of stand-alone and grid-connected power supplies, is developed so that distributed generation units can operate individually or in a microgrid mode. In the stand-alone power-supply mode, the output ac voltage can supply to ac loads. In the grid-connected power-supply mode, the goal of power management can be achieved by controlling the amplitude and direction of the output current in the inverter. An adaptive total sliding-mode control (ATSMC) scheme is designed for the proposed high-performance inverter with a full-bridge framework. As a result, the proposed high-performance inverter with the ATSMC scheme has the output voltage with a low total harmonic distortion in the stand-alone power-supply mode and the output current with a high power factor in the grid-connected power-supply mode to provide an ac output with high-performance power quality. The effectiveness of the proposed high-performance inverter with the ATSMC is verified by experimental results of a 5-kW prototype, and the merit of the proposed ATSMC scheme is indicated in comparison with conventional proportional–integral and proportional–resonant control strategies.
机译:在这项研究中,开发了一种高性能逆变器,其中包括独立电源和并网电源的功能,以便分布式发电单元可以单独运行或以微电网模式运行。在独立电源模式下,输出交流电压可以提供给交流负载。在并网电源模式下,可以通过控制逆变器中输出电流的幅度和方向来实现电源管理的目的。针对所提出的具有全桥架构的高性能逆变器,设计了自适应总滑模控制(ATSMC)方案。结果,提出的具有ATSMC方案的高性能逆变器在独立电源模式下具有较低的总谐波失真输出电压,而在并网电源中具有较高功率因数的输出电流模式以提供具有高性能电能质量的交流输出。 5kW原型机的实验结果验证了所建议的高性能变频器与ATSMC的有效性,并且与常规比例积分和比例谐振控制策略相比,该方案的优点也得到了证明。

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