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Application control configurations in a photovoltaic inverter operating in a microgrid

机译：在微电网中运行的光伏逆变器中的应用控制配置

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This work presents the development and implementation of four control configurations for photovoltaic inverter. These configurations are: Proportional Integral plus Resonant controller, Proportional Integral plus Repetitive controller, Proportional Integral-Proportional plus Resonant Controller and Two Degrees of Freedom plus Repetitive control with the aim of reducing the Total Harmonic Distortion in Voltage. These techniques are useful in island mode operation of an inverter when it is working as a voltage source in microgrid. In this operation mode, these control techniques are successfully applied when the inverter feeds linear and nonlinear loads. The purpose is to keep the output voltage waveform, frequency and amplitude according to the standard IEEE 519. It is use is justified because currently most of the loads have nonlinear characteristics which increase considerably the Total Harmonic Distortion in voltage. A comparative analysis derived from inverter simulations with nonlinear loads has been performed in order to validate those control techniques, considering that its application to feed line loads proves to be effective.
机译：这项工作介绍了光伏逆变器的四种控制配置的开发和实现。这些配置为：比例积分加谐振控制器，比例积分加重复控制器，比例积分-比例加谐振控制器和两个自由度加重复控制，目的是减少电压中的总谐波失真。当逆变器作为微电网中的电压源工作时，这些技术在逆变器的孤岛模式操作中很有用。在此操作模式下，当逆变器馈入线性和非线性负载时，这些控制技术将成功应用。目的是保持输出电压波形，频率和幅度符合IEEE 519标准。使用此方法是合理的，因为当前大多数负载具有非线性特性，从而大大增加了电压的总谐波失真。为了验证那些控制技术，已经进行了从带有非线性负载的逆变器仿真得出的比较分析，考虑到将其应用于馈线负载的做法被证明是有效的。

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