Comparative Design and Analysis of dc-Link-Voltage Controllers for Grid-Connected Voltage-Source Converter
2007 (English)In: 2007 IEEE Industry Applications Conference 42nd Annual Meeting, IAS, 2007, 1593-1600 p.Conference paper (Refereed)
Electric power conversion is used when loads require a voltage with a different magnitude and frequency than the supplying grid. In most cases the power conversion is made in two steps: one rectifier and one converter. The design and operation of the rectifier is of great importance for the interaction with the utility grid. By using a Voltage-Source Converter with a controllable dc-link voltage, a higher power quality can be obtained than using a simple diode rectifier.
In this paper, two designs of a dc-link-voltage controller are analyzed and tested. The parameter sensitivity, frequency response and load-disturbance rejection are investigated and compared. The response of the voltage controllers are also improved by utilizing feed forward. Both the measured dc-load current and a calculated dc-load current, obtained with an observer, are used. The performance of the controllers is evaluated through simulations and laboratory tests.
Place, publisher, year, edition, pages
2007. 1593-1600 p.
, IEEE Industry Applications Society Annual Meeting, ISSN 0197-2618
Control theory, Disturbance rejection, Electric load dispatching, Frequency response, Military data processing, Power converters, Power quality, Sensitivity analysis, Voltage control, Annual meetings, Dc-link, DC-link voltages, Design and analysis, Design and operation, Diode rectifiers, Electric powers, Feed forward (FF), Grid-connected, Laboratory testing, Load currents, Observer (OBS), Parameter sensitivities, Power conversions, Utility grids, Voltage controllers, Voltage-source-converter (VSC)
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-8093DOI: 10.1109/IAS.2007.246ISI: 000260446901004ScopusID: 2-s2.0-47849097989OAI: oai:DiVA.org:kth-8093DiVA: diva2:13322
QC 201009082008-03-102008-03-102010-09-08Bibliographically approved