Electric vehicle charging in parking lots of multi-family houses

Sammanfattning: This bachelor thesis examines the possibility for electric vehicle charging in parking lots of multi-family houses. A case study is performed on two different housing areas located in Uppsala,Sweden. The capacity of the electric cables supplying the housing areas with power and the installation costs for the charging points is studied. The thesis is written in collaboration with Uppsalahem, which owns and maintains the housing areas. The areas have different parking possibilities. The investigated alternatives for charging are modifying internal  combustion engine pre-heating stations to charging points and building new charging points. The investigation is performed using a model made in MATLAB. The results show that for the first housing area, Sala Hage, it is possible to supply the parking lots, 60 in total, belonging to the area with charging points with the power of 2.3 kW or 11 kW. For installing 22 kW chargers, the capacity of the cable is sufficient for only 30 parking lots. For the other housing area Kastanjen, the required capacity of the cable for installing charging points on the 60 parking lots in the garage is 106.6 kW for the charging power 2.3 kW, 266.3 kW for the power 11 kW, and 460.2 kW for the power 22 kW. A sensitivity analysis on the results of the MATLAB model is made by changing the input parameters. The cost for upgrading the 43 parking lots in Sala Hage from the already installed internal combustion engine pre-heating stations to charging points is 292 400 SEK. To install 60 new charging points, the cost would be 4 920 000 SEK, a cost which is valid for both the housing areas.