PV Source Inverter with Voltage Compensation for Weak Grid Based on UPQC Configuration

2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC) Pub Date : 2018-08-01 DOI:10.1109/EPEPEMC.2018.8521943

Desmon PetrusSimatupang, Jaeho Choi

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引用次数: 5

Abstract

In this paper, the distributed generation (DG) inverter design based on unified power quality conditioner (UPQC) configuration is presented to solve the power quality problems for sensitive load under weak grid condition. The integrated DG consists of a series connection inverter and a shunt connection inverter. The series connection inverter acts as a dynamic voltage restorer (DVR) to mitigate voltage problem due to cable impedance in submarine cable and fluctuated load. The shunt connection inverter works as a back-up power source like PV system with Maximum Power Point Tracing (MPPT) when the voltage problem is seriously lower or higher than the operation standard. Battery system, as a back-up source when low irradiance condition, will be considered in this paper too. This paper describes a simple method for controlling the series connection inverter while the shunt connection operates as a back-up for sensitive load. Finally, the proposed method for integrated PV source is verified through the PSiM simulation.

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基于UPQC配置的弱电网电压补偿光伏电源逆变器

针对弱电网条件下敏感负荷的电能质量问题，提出了一种基于统一电能质量调节器(UPQC)配置的分布式发电(DG)逆变器设计方案。一体化DG由串联逆变器和并联逆变器组成。串接逆变器作为动态电压恢复器(DVR)来缓解海底电缆中由于电缆阻抗和负载波动引起的电压问题。并联逆变器与具有最大功率点跟踪(MPPT)的光伏系统一样，在电压严重低于或高于运行标准的情况下作为备用电源。在低辐照度条件下，本文还将考虑电池系统作为备用电源。本文介绍了一种在并联逆变器作为敏感负载后备时对并联逆变器进行控制的简单方法。最后，通过PSiM仿真验证了该方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)

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