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本文为美国休斯顿大学(作者:Abraham Oladepo)的硕士论文,共71页。
本论文提出了一个单相并网逆变器与无功功率控制器在分布式发电系统(DGS)可再生能源的应用。这使得DGS中的本地可再生能源能够为电网提供必要的无功功率支持。逆变器利用控制算法提供无功功率支持,改善电网电压分布。传统的并网逆变器通过调节逆变器的输出电压,成为一种动态无功补偿装置。对电网的无功支持通过感应逆变器输出电压来产生直接和正交分量来实现,以便为电流控制回路产生参考电流信号,从而控制逆变器。利用Simulink对系统进行建模,验证了分布式发电系统无功控制的功能。
This thesis presents a single phase grid tie inverter with reactive power controller for renewable energy applications in a distributed generation system (DGS). This allows the local renewable energy sources in the DGS to provide the necessary reactive power support to the grid. The inverter utilizes a control algorithm to provide reactive power support to improve the voltage profile of the grid. A traditional grid tie inverter becomes a dynamic reactive power compensator, by regulating the output voltage of the inverter. The reactive support for the grid was implemented by sensing the inverter output voltage to generate its direct and quadrature component in order to generate a reference current signal for a current control loop and thereby controlling the inverter. The system was modeled with Simulink to verify the functionality of the reactive power control in a DGS.
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