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dc.contributor.advisorMolinas, Martanb_NO
dc.contributor.authorBajracharya, Chandranb_NO
dc.date.accessioned2014-12-19T13:50:57Z
dc.date.available2014-12-19T13:50:57Z
dc.date.created2010-09-03nb_NO
dc.date.issued2008nb_NO
dc.identifier347700nb_NO
dc.identifierntnudaim:4309nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/256495
dc.description.abstractWith the recent developments in semiconductors and control equipment, Voltage Source Converter based High Voltage Direct Current (VSC-HVDC) has attracted the growing interest of researchers. The use of VSC technology and Pulse Width Modulation (PWM) has a number of potential advantages: short circuit current reduction; rapid and independent control of the active and reactive power, etc. With such highly favourable advantages, VSC-HVDC is definitely going to be a large part of future transmission and distribution systems. HVDC technology based on VSC technology has been an area of growing interest recently because of its suitability in forming a transmission link for transmitting bulk amount of wind power. This thesis deals with the control of VSC-HVDC. The objective of the work is to understand the control structure of the VSC-HVDC system, and establish the tuning criteria for the PI controllers of the converter controllers. A model of a VSC based dc link using PWM Technology is developed. A mathematical model of the control system based on the relationships between voltage and current is described for the VSC. A control system is developed combining an inner current loop controller and outer dc voltage controller. The vector control strategy is studied and corresponding dynamic performance under step changes and system fault is investigated in PSCAD/EMTDC simulation package. The simulation results verify that the model can fulfill bi-directional power transfers, fast response control and that the system has good steady state performance. The controller parameters tuned according to the developed tuning criteria is found to provide acceptable system performances.nb_NO
dc.languageengnb_NO
dc.publisherInstitutt for elkraftteknikknb_NO
dc.subjectntnudaimno_NO
dc.subjectMSELPOWER Master of Science in Electric Power Engineeringno_NO
dc.subjectElektrisk Energiteknikkno_NO
dc.titleControl of VSC-HVDC for wind powernb_NO
dc.typeMaster thesisnb_NO
dc.source.pagenumber71nb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi, matematikk og elektroteknikk, Institutt for elkraftteknikknb_NO


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