Combined Voltage Balancing Techniques of the DC Link in Five-Level Medium Voltage NPC Back-to-Back Converters for Offshore Renewable Generation
Paper in proceedings, 2017

The voltage balancing of the dc-link capacitors in an electric drive system with five-level neutral-pointclamped converters is investigated in this paper. A properly modified space-vector-modulation technique is utilized in combination with a multilevel dc/dc converter for controlling the capacitor voltages. An advanced algorithm has been developed for reducing the losses of the electric drive system and for ensuring that the capacitor voltages are balanced in every operating condition. The developed electric drive system can be used in offshore power plants for driving medium voltage generators. Selective simulation results are presented to validate the theoretical considerations.

High voltage power converters

Multilevel converters

Vector control

Converter control

Variable speed drive

Author

Georgios Mademlis

Chalmers, Energy and Environment, Electric Power Engineering

Yujing Liu

Chalmers, Energy and Environment, Electric Power Engineering

Nima Saadat

Chalmers, Energy and Environment, Electric Power Engineering

2017 19th European Conference on Power Electronics and Applications

2325-0313 (ISSN)

2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)
Warsaw, Poland,

Power Take-Off System for a Subsea Tidal Kite (PowerKite)

European Commission (Horizon 2020), 2016-01-01 -- 2018-06-30.

Subject Categories

Energy Engineering

DOI

10.23919/EPE17ECCEEurope.2017.8099317

More information

Latest update

1/15/2019