2026-09-21T01:57:17Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/17012 2023-07-10 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Chapman, Patrick L. Murray, Charles J. 2010-08-31T20:04:08Z 2010-08-31T20:04:08Z 2012-09-07T16:43:36Z 2010-08-31T20:04:08Z 2010-08 Reactive power support is expected to be an emerging ancillary requirement for single-phase photovoltaic (PV) inverters. This work assesses related reliability issues and focuses on the second stage or inversion process in PV inverters. Three PV inverter topologies are analyzed and their reliability is determined on a component-by-component level. Limiting operating points are considered for each of these topologies. The capacitor in the dc link, the MOSFETs in the inverting bridge, and the output filter are the components affected. Studies show that varying power-factor operation with a constant real power output increases the energy storage requirement as well as the capacitance required in the dc link in order to produce the double-frequency power ripple. The overall current rating of the MOSFETs and output filter must also be sized to accommodate the current for the apparent power output. Modeling of the inverter verifies the conditions for each of the components under varying reactive power support commands. It is shown that the production of reactive power can significantly increase the capacitance requirement, but the limiting reliability issue comes from the increased output current rating of the MOSFETs. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2010-06-23T13:37:56Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Murray_Charles.pdf: 1793605 bytes, checksum: 5b7350fce8c7be123cd93fec605fdef6 (MD5) Made available in DSpace on 2010-08-31T20:04:08Z (GMT). No. of bitstreams: 4 Final Draft.pdf: 1793534 bytes, checksum: d9054f046aa6bb1d54ba28d33faf4376 (MD5) Murray_Charles.pdf: 1793605 bytes, checksum: 5b7350fce8c7be123cd93fec605fdef6 (MD5) 1_Murray_Charles.pdf: 1793534 bytes, checksum: d9054f046aa6bb1d54ba28d33faf4376 (MD5) license.txt: 4063 bytes, checksum: 72d21a42f4f3027533daed0a3340a404 (MD5) Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Ingram (wingram2@illinois.edu) on 2010-08-31T20:04:56Z Item is restricted until 2012-08-31T20:04:44Z Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2012-09-07T16:43:36Z Item was in collections: University of Illinois Dissertations and Theses (ID: 204) Dissertations and Theses - Electrical and Computer Engineering (ID: 446) No. of bitstreams: 5 Final Draft.pdf: 1793534 bytes, checksum: d9054f046aa6bb1d54ba28d33faf4376 (MD5) Murray_Charles.pdf: 1793605 bytes, checksum: 5b7350fce8c7be123cd93fec605fdef6 (MD5) 1_Murray_Charles.pdf: 1793534 bytes, checksum: d9054f046aa6bb1d54ba28d33faf4376 (MD5) license.txt: 4063 bytes, checksum: 72d21a42f4f3027533daed0a3340a404 (MD5) 1_Murray_Charles.pdf.txt: 89752 bytes, checksum: ffe307ee3854cea124c1fb917db55ce1 (MD5) Item released from any restrictions by Sarah Shreeves (sshreeve@illinois.edu) on 2012-09-07T16:43:36Z http://hdl.handle.net/2142/17012 en Copyright 2010 Charles J. Murray Photovoltaic Inverters Reactive Power Support Reliability of Photovoltaic Inverters Single Phase Reactive Power Support Reliability analysis of single-phase photovoltaic inverters with reactive power support Electrical & Computer Eng 1933 Electrical & Computer Engr 1200 University of Illinois at Urbana-Champaign Thesis M.S. MS:Electr & Computer Eng-UIUC 10KS1200MS