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First Experimental Results of a Grid Connected Vertical Axis Marine Current Turbine using a Multilevel Power Converter

Conference Paper

Title: First Experimental Results of a Grid Connected Vertical Axis Marine Current Turbine using a Multilevel Power Converter
Author:
Forslund, J.; Thomas, K.
Publication Date:
Event Name:
4th Asian Wave and Tidal Energy Conference (AWTEC)
Event Location:
Taipei, Taiwan
Publisher:
AWTEC
Affiliation:
Uppsala University
Technology:
Current, Cross Flow Turbine
Engineering:
Grid Integration
Language:
English

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Citation

Forslund, J.; Thomas, K. (2018). First Experimental Results of a Grid Connected Vertical Axis Marine Current Turbine using a Multilevel Power Converter. Paper presented at 4th Asian Wave and Tidal Energy Conference (AWTEC), Taipei, Taiwan.
@conference{Forslund-2018-4115,
author = {Forslund, J and Thomas, K},
title = {First Experimental Results of a Grid Connected Vertical Axis Marine Current Turbine using a Multilevel Power Converter},
year = {2018},
month = {sep},
series = {4th Asian Wave and Tidal Energy Conference (AWTEC)},
address = {Taipei, Taiwan},
publisher = {AWTEC},
keywords = {Current, Cross Flow Turbine, Grid Integration},
}
Export Citation to BibTex
TY - CONF
TI - First Experimental Results of a Grid Connected Vertical Axis Marine Current Turbine using a Multilevel Power Converter
AU - Forslund, J
AU - Thomas, K
T2 - 4th Asian Wave and Tidal Energy Conference (AWTEC)
C1 - Taipei, Taiwan
AB - An experimental marine current power station has been deployed in S¨oderfors, Sweden. It comprises a vertical axisturbine directly connected to a permanent magnet synchronous generator rated at 7.5 kW. The generator is controlled by aBack-To-Back 2L-3L Cascaded H-Bridge full scale bi-directional Power Converter located on shore. This paper presents the first test results of the power converter, including grid connection. The startup of the turbine, power extraction and initial activepower injection to the grid, at 50 % of rated power, operated as predicted by laboratory experiments and simulations. After40 seconds of grid connection the safety system disconnect the grid converter due to high currents injected to the grid. Theproblem is mostly likely associated with the current controller in the dq0 frame. Further tuning of the PI regulators and the potential addition of an anti-windup could mitigate the control issue.
DA - 2018/09//
PY - 2018
PB - AWTEC
LA - English
KW - Current
KW - Cross Flow Turbine
KW - Grid Integration
ER -
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Abstract

An experimental marine current power station has been deployed in S¨oderfors, Sweden. It comprises a vertical axis

turbine directly connected to a permanent magnet synchronous generator rated at 7.5 kW. The generator is controlled by a

Back-To-Back 2L-3L Cascaded H-Bridge full scale bi-directional Power Converter located on shore. This paper presents the first test results of the power converter, including grid connection. The startup of the turbine, power extraction and initial active

power injection to the grid, at 50 % of rated power, operated as predicted by laboratory experiments and simulations. After

40 seconds of grid connection the safety system disconnect the grid converter due to high currents injected to the grid. The

problem is mostly likely associated with the current controller in the dq0 frame. Further tuning of the PI regulators and the potential addition of an anti-windup could mitigate the control issue.