PV-System as a Primary Energy Source for E-REV
Niskala, Marko (2022)
2022
All rights reserved. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2022112023225
https://urn.fi/URN:NBN:fi:amk-2022112023225
Tiivistelmä
This thesis started from an idea about modification and creating a working electricity production system to primarily produce electricity for Extended Range Electric Vehicle, E-REV / Electric Vehicle, EV.
The commissioner of the thesis was a household in Jyväskylä with an operational 780 Wp PV-system with LiFePo4 batteries. The idea of the topic emerged after purchasing E-REV and the need to get the most benefit from the commissioner’s own electricity production. However, the garage construction project slightly changed the approach regarding the solar electricity system change, which also considered the electricity distribution of both in the garage and in the house.
In this work the calculation for defining the size of the system was based on PV-system production data logged from the 780 Wp system within the years and the data related to E-REV consumption, which was logged during numerous drives by pairing a phone with a mobile application to the car.
When choosing solar panels, attention was paid to the physical size of the panel field, because at the same time as the study project, a garage construction project was underway, to which these panels were essentially con-nected.
In the device selection, inverters from two manufacturers were considered, and the selection criteria were based on the battery voltage and secondary voltage distribution configuration design within the project and price. Since it was a modification and expansion project of an existing system, other equipment choices considered connecting the existing battery to a larger system.
In the design of the new system also the fact that it is necessary to monitor the system's output and store data about it was considered, so a relatively large amount of time was used for creating a python-based script / program for electricity production and load monitoring system.
As a result, the electricity production did not quite meet the calculation, because during the project the solar panels turned out to be faulty. Based on the production data for 2022, an average of 190.15 kWh/month of electricity was produced from March to the end of August. This meant that the calculated yield was sufficient for 73.5% of the calculated amount of electricity and the daily driving distance was 35 km instead of the 48 km determined in the calculation.
The commissioner of the thesis was a household in Jyväskylä with an operational 780 Wp PV-system with LiFePo4 batteries. The idea of the topic emerged after purchasing E-REV and the need to get the most benefit from the commissioner’s own electricity production. However, the garage construction project slightly changed the approach regarding the solar electricity system change, which also considered the electricity distribution of both in the garage and in the house.
In this work the calculation for defining the size of the system was based on PV-system production data logged from the 780 Wp system within the years and the data related to E-REV consumption, which was logged during numerous drives by pairing a phone with a mobile application to the car.
When choosing solar panels, attention was paid to the physical size of the panel field, because at the same time as the study project, a garage construction project was underway, to which these panels were essentially con-nected.
In the device selection, inverters from two manufacturers were considered, and the selection criteria were based on the battery voltage and secondary voltage distribution configuration design within the project and price. Since it was a modification and expansion project of an existing system, other equipment choices considered connecting the existing battery to a larger system.
In the design of the new system also the fact that it is necessary to monitor the system's output and store data about it was considered, so a relatively large amount of time was used for creating a python-based script / program for electricity production and load monitoring system.
As a result, the electricity production did not quite meet the calculation, because during the project the solar panels turned out to be faulty. Based on the production data for 2022, an average of 190.15 kWh/month of electricity was produced from March to the end of August. This meant that the calculated yield was sufficient for 73.5% of the calculated amount of electricity and the daily driving distance was 35 km instead of the 48 km determined in the calculation.