dc.contributor.advisor | Molinas, Marta Maria Cabrera | |
dc.contributor.advisor | Overland, Jonas | |
dc.contributor.author | Gården, Martin Fald | |
dc.date.accessioned | 2019-09-11T11:41:47Z | |
dc.date.created | 2015-06-22 | |
dc.date.issued | 2015 | |
dc.identifier | ntnudaim:12739 | |
dc.identifier.uri | http://hdl.handle.net/11250/2616080 | |
dc.description.abstract | Thyristor 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.language | eng | |
dc.publisher | NTNU | |
dc.subject | Kybernetikk og robotikk (2 årig) | en |
dc.title | Alternative Solutions to Thyristors in Three Phase Rectifier Bridges - With Inductive Load | en |
dc.type | Master thesis | en |
dc.source.pagenumber | 67 | |
dc.contributor.department | Norges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi og elektroteknikk,Institutt for teknisk kybernetikk | nb_NO |
dc.date.embargoenddate | 10000-01-01 | |