ELEKTRO-MFE 20008
Examensarbete 30 hp
October 2020
Investigation of Three-Phase
Balancing
Techniques
A Comparative Study of Different Solutions
With Respect to Telecom Industry Needs
Mahir Mahdee
Masterprogram i förnybar elgenerering
Master Programme in Renewable Electricity Production
Teknisk- naturvetenskaplig fakultet
UTH-enheten
Besöksadress:
Ångströmlaboratoriet
Lägerhyddsvägen 1
Hus 4, Plan 0
Postadress:
Box 536
751 21 Uppsala
Telefon:
018 – 471 30 03
Telefax:
018 – 471 30 00
Hemsida:
http://www.teknat.uu.se/student
Abstract
Investigation of Three-Phase Balancing Techniques
Mahir Mahdee
In the telecom industry, one-phase rectifiers
are commonly used in
base stations and site power systems. The abundant of this one phase
loads connected to the three- phase network where three-phase
installations are required can enhance the amount of unbalances in
the three-phase systems. Unbalanced systems can cause the three-phase
connections
to be out of the norm, i.e. it can be out of the
requirements of the distribution company or installation standards
and thus shall not be allowed to be connected to the network.
Additionally, unbalance can cause problems in terms of energy loss in
kWh,
greenhouse emissions, which can also impose specific standards
and guidelines for three-phase electricity users and manufacturers.
Those problems are addressed in the literature.
This thesis investigates the requirements and standards for phase
balancing in three- phase installations and uncovers solutions to
mitigate these unbalances in the perspective of the telecom industry.
Through
market investigation, the knowledge and solutions to this day
have been found and summarized, which is then used to further dig
into the technical understanding of phase balancing techniques. The
investigation shows that there is only a
small market that requests
and has standards for phase balancing of loads. The different
solutions evaluated and modelled shows they can mitigate the load
balancing issue in three-phase installation likey to a specific limit
according to required standards.
ELEKTRO-MFE 20008
Examinator: Irina Temiz
Ämnesgranskare:
Juan de Santiago
Handledare: Ali Can Arslan
