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Extended Reference Signal Generation Scheme for Integration of Unified Power Quality Conditioner in Grid-connected Photovoltaic System

机译：并网光伏系统中集成电能质量调节器的扩展参考信号生成方案

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摘要

This article proposes an extended reference signal generation scheme for the integration of a three-phase four-wire unified power quality conditioner in a grid-connected photovoltaic system. The photovoltaic-unified power quality conditioner provides compensation against voltage harmonics, current harmonics, and voltage interruption for the whole day. It also transmits the power generated in the photovoltaic system to the load. The proposed topology utilizes the green energy source with an energy storage unit to address the DC-link voltage requirement of the shunt and series active power filters of the unified power quality conditioner. The high-selectivity filter is used in the shunt inverter control scheme for reference current generations. The series inverter in the unified power quality conditioner is used for supplying a part of reactive power required by the load and for compensation of sag/swell, supply voltage unbalance, and distortions. This is achieved by controlling the phase angle and magnitude of series-injected voltage called the power angle control method. The simulation and experimental studies are carried out to validate the effectiveness of the proposed photovoltaic-based three-phase four-wire unified power quality conditioner.
机译：本文提出了一种扩展的参考信号生成方案，用于在并网光伏系统中集成三相四线统一电能质量调节器。光伏统一的电能质量调节器可全天提供针对电压谐波，电流谐波和电压中断的补偿。它还将光伏系统中产生的功率传输到负载。拟议的拓扑结构利用带有能量存储单元的绿色能源来满足统一电能质量调节器的并联和串联有源功率滤波器的直流母线电压要求。高选择性滤波器在并联逆变器控制方案中用于参考电流生成。统一电能质量调节器中的串联逆变器用于提供负载所需的一部分无功功率，并用于补偿骤降/骤升，电源电压不平衡和失真。这是通过控制被称为功率角控制方法的串联注入电压的相位角和幅度来实现的。进行仿真和实验研究以验证所提出的基于光伏的三相四线统一电能质量调节器的有效性。

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