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dc.contributor.advisorMolinas, Marta Maria Cabrera
dc.contributor.advisorOverland, Jonas
dc.contributor.authorGården, Martin Fald
dc.date.accessioned2019-09-11T11:41:47Z
dc.date.created2015-06-22
dc.date.issued2015
dc.identifierntnudaim:12739
dc.identifier.urihttp://hdl.handle.net/11250/2616080
dc.description.abstractThyristor bridge rectifiers are probably the rectifier topology that are most used in applications where control of the DC voltage is needed. In addition to the fact that thyristors beginning to get yesterdays technology, they also generate a lot of unwanted harmonic distortion on the AC side, and the time is in to look at other topologies that can replace the thyristor bridge. IGBT (Insulated Gate Bipolar Transistor)is a power electronic component which has become popular to use in many applications the last years, also in rectifiers. Thus the IGBT has become a popular component, it is less used in high power applications such as controlled three phase rectifiers. This thesis are looking at three different rectifier topologies, one traditional thyristor bridge rectifier, and two with IGBTs. Comparison between the three rectifiers are done, with pros and cons for each of them. To verify the theory, each topology has been simulated in Simulink. The first topology which is proposed to replace the thyristor bridge is a diode bridge rectifier with a H IGBT-bridge across the load. This topology was investigated in the pre project of this author the last semester. The new topology that has been proposed in this thesis is a rectifier bridge consisting of six RB-IGBT (reverse blocking IGBT), controlled with a SPWM signal (sinusoidal pulse width modulation). The greatest advantage with the IGBTs is that they can be switched on and off in milliseconds, independent of the voltage polarity. By using SPWM control of the IGBT rectifier, sinusoidal current draw from the source are possible. If this is achieved, the harmonic distortion in the source will be minimal. The simulations of this topology shows that the responses to changes in load voltage are equal to the responses with the diode and thyristor bridges. The source harmonics are significantly less with the IGBT rectifier. To verify the work and simulations done in this thesis a physical model of the system should be made and tested.en
dc.languageeng
dc.publisherNTNU
dc.subjectKybernetikk og robotikk (2 årig)en
dc.titleAlternative Solutions to Thyristors in Three Phase Rectifier Bridges - With Inductive Loaden
dc.typeMaster thesisen
dc.source.pagenumber67
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi og elektroteknikk,Institutt for teknisk kybernetikknb_NO
dc.date.embargoenddate10000-01-01


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