Study of solution towards ground leakage current via inverter switching in different topologies for grid connected PV system
Renewable energy sources are major issues in order to address the energy problem. Among them, the PV (Photovoltaic) system will be dominant because its availability and reliability. One of the common problems that arise due to the formation of solar PV panels is capacitive ground current. Althoug...
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my-uthm-ep.67152022-03-14T02:14:30Z Study of solution towards ground leakage current via inverter switching in different topologies for grid connected PV system 2013-06 Kimpol, Norhanisa TK Electrical engineering. Electronics Nuclear engineering TK1001-1841 Production of electric energy or power. Powerplants. Central stations Renewable energy sources are major issues in order to address the energy problem. Among them, the PV (Photovoltaic) system will be dominant because its availability and reliability. One of the common problems that arise due to the formation of solar PV panels is capacitive ground current. Although transformer helps in reducing this problem, the poor side of having the transformer in PV systems is accounted to bulky in size and hard to install the entire PV system. Indirectly, the cost is higher and led to a lower efficiency due to higher losses of power. To solve this, transformerless inverter topology offers a solution for the efficiency, size and weight. The leakage current depends on both inverter topology and control strategy. In this report, different inverter topologies have been reviewed with respect to ground current formation due to inverter switching that causes varying common mode voltage that will excite the resonant circuit as well as causes the leakage current phenomenon. The transformerless inverter topologies that are considered are Bipolar H-Bridge, Modified HB-ZVR and NPC. In order to study the effect of having a transformer in eliminating the ground current, Bipolar H-Bridge inverter with transformer also include in this project. All proposed topologies are modelled and simulated to compare the pattern and behavior of ground leakage current with other existing topology. By comparing the pattern of the output from the simulation, a conclusion is given which proves that NPC topology are suitable for PV application due to low leakage current compared with other two topologies. 2013-06 Thesis http://eprints.uthm.edu.my/6715/ http://eprints.uthm.edu.my/6715/1/24p%20NORHANISA%20KIMPOL.pdf text en public http://eprints.uthm.edu.my/6715/2/NORHANISA%20KIMPOL%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/6715/3/NORHANISA%20KIMPOL%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Malaysia Fakulti Kejuruteraan Elektrik dan Elektronik |
| institution |
Universiti Tun Hussein Onn Malaysia |
| collection |
UTHM Institutional Repository |
| language |
English English English |
| topic |
TK Electrical engineering Electronics Nuclear engineering TK Electrical engineering Electronics Nuclear engineering |
| spellingShingle |
TK Electrical engineering Electronics Nuclear engineering TK Electrical engineering Electronics Nuclear engineering Kimpol, Norhanisa Study of solution towards ground leakage current via inverter switching in different topologies for grid connected PV system |
| description |
Renewable energy sources are major issues in order to address the energy problem.
Among them, the PV (Photovoltaic) system will be dominant because its availability
and reliability. One of the common problems that arise due to the formation of solar
PV panels is capacitive ground current. Although transformer helps in reducing this
problem, the poor side of having the transformer in PV systems is accounted to bulky
in size and hard to install the entire PV system. Indirectly, the cost is higher and led
to a lower efficiency due to higher losses of power. To solve this, transformerless
inverter topology offers a solution for the efficiency, size and weight. The leakage
current depends on both inverter topology and control strategy. In this report,
different inverter topologies have been reviewed with respect to ground current
formation due to inverter switching that causes varying common mode voltage that
will excite the resonant circuit as well as causes the leakage current phenomenon.
The transformerless inverter topologies that are considered are Bipolar H-Bridge,
Modified HB-ZVR and NPC. In order to study the effect of having a transformer in
eliminating the ground current, Bipolar H-Bridge inverter with transformer also
include in this project. All proposed topologies are modelled and simulated to
compare the pattern and behavior of ground leakage current with other existing
topology. By comparing the pattern of the output from the simulation, a conclusion is
given which proves that NPC topology are suitable for PV application due to low
leakage current compared with other two topologies. |
| format |
Thesis |
| qualification_name |
Master of Philosophy (M.Phil.) |
| qualification_level |
Master's degree |
| author |
Kimpol, Norhanisa |
| author_facet |
Kimpol, Norhanisa |
| author_sort |
Kimpol, Norhanisa |
| title |
Study of solution towards ground leakage current via inverter switching in different topologies for grid connected PV system |
| title_short |
Study of solution towards ground leakage current via inverter switching in different topologies for grid connected PV system |
| title_full |
Study of solution towards ground leakage current via inverter switching in different topologies for grid connected PV system |
| title_fullStr |
Study of solution towards ground leakage current via inverter switching in different topologies for grid connected PV system |
| title_full_unstemmed |
Study of solution towards ground leakage current via inverter switching in different topologies for grid connected PV system |
| title_sort |
study of solution towards ground leakage current via inverter switching in different topologies for grid connected pv system |
| granting_institution |
Universiti Tun Hussein Malaysia |
| granting_department |
Fakulti Kejuruteraan Elektrik dan Elektronik |
| publishDate |
2013 |
| url |
http://eprints.uthm.edu.my/6715/1/24p%20NORHANISA%20KIMPOL.pdf http://eprints.uthm.edu.my/6715/2/NORHANISA%20KIMPOL%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/6715/3/NORHANISA%20KIMPOL%20WATERMARK.pdf |
| _version_ |
1747831087022735360 |