Flexible operation of parallel grid-connecting converters under unbalanced grid voltage

Jinghang Lu, Mehdi Savaghebi, Josep M. Guerrero

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

210 Downloads (Pure)

Abstrakt

According to the European grid code, grid-connecting converters should always be connected to the grid under grid voltage unbalance. However, grid voltage unbalance severely affects the stable operation of the converters and leads to the various power issues, such as active power oscillation, DC-link voltage ripple, and overloading. Moreover, under grid voltage unbalance, the active power delivery ability is decreased due to the converter's current rating limitation. In this paper, a thorough study on the current limitation of the grid-connecting converter under grid voltage unbalance is conducted. In addition, based on the principle that total output active power should be oscillation free, a coordinated control strategy is proposed for the parallel grid-connecting converters. The case study has been conducted to demonstrate the effectiveness of this proposed control strategy.
OriginalsprogEngelsk
TitelProceedings of 2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)
Antal sider9
ForlagIEEE Press
Publikationsdatosep. 2017
ISBN (Elektronisk)978-90-75815-27-6
DOI
StatusUdgivet - sep. 2017
Udgivet eksterntJa
Begivenhed2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe) - Warsaw, Polen
Varighed: 11. sep. 201714. sep. 2017

Konference

Konference2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)
LandPolen
ByWarsaw
Periode11/09/201714/09/2017

    Fingerprint

Citationsformater

Lu, J., Savaghebi, M., & Guerrero, J. M. (2017). Flexible operation of parallel grid-connecting converters under unbalanced grid voltage. I Proceedings of 2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe) IEEE Press. https://doi.org/10.23919/EPE17ECCEEurope.2017.8098983