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首页> 外文期刊>International journal of electrical power and energy systems >An optimized direct control method applied to multilevel inverter for microgrid power quality enhancement
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An optimized direct control method applied to multilevel inverter for microgrid power quality enhancement

机译：一种应用于多电平逆变器的优化直接控制方法以提高微电网电能质量

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摘要

Multifunctional DGs and active power filters have become a mature technology in recent years, so in this paper, an optimized current control method for a multilevel converter is proposed. The control method will overcome harmonic current tracking inefficiency of previous control methods in online harmonic compensation applications in microgrids. This control method is applicable for grid-connected inverter-based multi-functional Distributed Generation (DG) converters. It could also be used in active power filter applications which need highspeed reference tracking ability. Having the advantages of current control methods like hysteresis band control, proportional-integral (PI) and proportional-resonant (PR) control methods, the proposed approach overcomes disadvantages of these methods especially in harmonic reference tracking as it will be discussed in detail. The main advantages of this method are the simplicity of implementation, calculation delay compensation and its fast response to changes. The power electronic circuit, operating principles, two-horizon predicted switching states of multilevel inverter, experimental results and applications of this control method will be discussed in the paper. For studying the feasibility of the control method, an experimental prototype is tested in a microgrid platform.
机译：多功能DG和有源电力滤波器已成为近年来的一项成熟技术，因此，本文提出了一种用于多电平转换器的优化电流控制方法。该控制方法将克服微电网在线谐波补偿应用中先前控制方法的谐波电流跟踪效率低下的问题。此控制方法适用于基于电网连接的逆变器的多功能分布式发电（DG）转换器。它也可以用于需要高速基准跟踪功能的有源功率滤波器应用中。由于具有电流控制方法的优势，例如磁滞带控制，比例积分（PI）和比例谐振（PR）控制方法，因此该方法克服了这些方法的缺点，特别是在谐波参考跟踪方面，将对此进行详细讨论。该方法的主要优点是实现简单，计算延迟补偿及其对变化的快速响应。本文将讨论电力电子电路，工作原理，多水平逆变器的两水平预测开关状态，该控制方法的实验结果和应用。为了研究控制方法的可行性，在微电网平台上测试了一个实验原型。

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