A 3-kW Two-Stage Transformerless PV Inverter With Resonant DC Link and ZVS-PWM Operation
Photovoltaic (PV) inverters play important roles in renewable energy integration. Reducing the switching loss is a main challenge in improving the efficiency and power density. This article presents the design, implementation, and field test of a 3-kW two-stage commercial-ready transformerless PV in...
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| Veröffentlicht in: | IEEE transactions on industry applications 2021-03, Vol.57 (2), p.1495-1506 |
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| creator | Chen, Yenan Chen, Minjie Xu, Dehong |
| description | Photovoltaic (PV) inverters play important roles in renewable energy integration. Reducing the switching loss is a main challenge in improving the efficiency and power density. This article presents the design, implementation, and field test of a 3-kW two-stage commercial-ready transformerless PV inverter with resonant dc link and zero-voltage-switching pulsewidth modulation (ZVS-PWM) operation. The ZVS-PWM operation periodically resonates the dc-link voltage of the inverter to zero for ZVS of the inverter switches, which enables higher switching frequency and significantly reduced magnetic component size. A 30-kW distributed PV system comprising ten ZVS-PWM PV inverters was built and tested for more than 100 days to evaluate the long-term performance of the PV inverter. The key figure-of-merits for grid-interface operation, such as efficiency, power density, total harmonic distortion, and leakage current, are measured, analyzed, and reported. |
| doi_str_mv | 10.1109/TIA.2020.3043218 |
| format | Article |
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Reducing the switching loss is a main challenge in improving the efficiency and power density. This article presents the design, implementation, and field test of a 3-kW two-stage commercial-ready transformerless PV inverter with resonant dc link and zero-voltage-switching pulsewidth modulation (ZVS-PWM) operation. The ZVS-PWM operation periodically resonates the dc-link voltage of the inverter to zero for ZVS of the inverter switches, which enables higher switching frequency and significantly reduced magnetic component size. A 30-kW distributed PV system comprising ten ZVS-PWM PV inverters was built and tested for more than 100 days to evaluate the long-term performance of the PV inverter. 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(IEEE) 2021</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c333t-8a90c7e9dbb1b7ff515caf6f9e7a43eb767afaf04e4b47a6e44c0c394e4730b83</citedby><cites>FETCH-LOGICAL-c333t-8a90c7e9dbb1b7ff515caf6f9e7a43eb767afaf04e4b47a6e44c0c394e4730b83</cites><orcidid>0000-0003-0377-8881 ; 0000-0002-9906-4500 ; 0000-0003-0705-563X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/9289017$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/9289017$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Chen, Yenan</creatorcontrib><creatorcontrib>Chen, Minjie</creatorcontrib><creatorcontrib>Xu, Dehong</creatorcontrib><title>A 3-kW Two-Stage Transformerless PV Inverter With Resonant DC Link and ZVS-PWM Operation</title><title>IEEE transactions on industry applications</title><addtitle>TIA</addtitle><description>Photovoltaic (PV) inverters play important roles in renewable energy integration. Reducing the switching loss is a main challenge in improving the efficiency and power density. This article presents the design, implementation, and field test of a 3-kW two-stage commercial-ready transformerless PV inverter with resonant dc link and zero-voltage-switching pulsewidth modulation (ZVS-PWM) operation. The ZVS-PWM operation periodically resonates the dc-link voltage of the inverter to zero for ZVS of the inverter switches, which enables higher switching frequency and significantly reduced magnetic component size. A 30-kW distributed PV system comprising ten ZVS-PWM PV inverters was built and tested for more than 100 days to evaluate the long-term performance of the PV inverter. 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| identifier | ISSN: 0093-9994 |
| ispartof | IEEE transactions on industry applications, 2021-03, Vol.57 (2), p.1495-1506 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Electric potential Field tests Harmonic distortion Inverter Inverters Leakage current MOSFET photovoltaic (PV) Photovoltaic cells Pulse duration modulation Pulse width modulation Reactive power renewable energy resonant dc link Switches Switching Topology Voltage Zero voltage switching zero voltage switching (ZVS) |
| title | A 3-kW Two-Stage Transformerless PV Inverter With Resonant DC Link and ZVS-PWM Operation |
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