Harmonic compensation with active front-end converters based only on grid voltage measurements

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

Colleges, School and Institutes

External organisations

  • SINTEF Energy Research
  • Politecnico di Milano

Abstract

In the recent years, there has been a considerable increment of diffused generators connected to distribution grids by means of power converters. These converters operate frequently below their rated power due to the fluctuation of the power generated by the renewable sources. In this scenario, power electronics interfaces could be also used as active harmonic compensators for other converters or distorting loads. Typically, these converters do not have information on other loads or on the level of grid current distortion. For this reason, this paper presents a new control algorithm for the grid harmonics compensation that relies only on the measurement of the voltage at the point of connection of the power converter. The reference of the compensating current is calculated from the harmonic content of the voltage in a reference frame synchronous with the grid voltage. Simulation results carried out on a sample distribution network with linear and nonlinear loads show that the proposed method does not require the knowledge of the harmonic current either of the grid or of the load and it is suitable when the distorting loads are unknown.

Details

Original languageEnglish
Title of host publicationIET Conference Publications
Publication statusPublished - 1 Jan 2014
Event3rd Renewable Power Generation Conference, RPG 2014 - Naples, United Kingdom
Duration: 24 Sep 201425 Sep 2014

Conference

Conference3rd Renewable Power Generation Conference, RPG 2014
CountryUnited Kingdom
CityNaples
Period24/09/1425/09/14

Keywords

  • Active filters, Distributed generation, Harmonic compensation

ASJC Scopus subject areas