Abstract
This paper presents the design of an energy buffer decoupling double-line-frequency AC power pulsation from main DC power sources in the single-phase series-stacked PV-battery inverter. As the active decoupling technique reducing the amount of capacitance required to stabilize the DC-bus voltage and achieving elimination of electrolytic capacitors, the series-stacked buffer architecture is adopted. In this work, the focus is on the optimization of the buffer design in the series-stacked PV-battery inverter and presenting the control scheme of the partial-power DC-DC optimizer to avoid processing the double-line-frequency AC current through all the DC sources: a PV string and a battery. The steady-state operation of the AC power pulsation decoupling of the series-stacked PV-battery inverter is demonstrated and verified through the controller hardware-in-the-loop test.
Original language | English |
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Title of host publication | 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 161-166 |
Number of pages | 6 |
ISBN (Electronic) | 9781538683309 |
DOIs | |
State | Published - May 24 2019 |
Externally published | Yes |
Event | 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States Duration: Mar 17 2019 → Mar 21 2019 |
Publication series
Name | Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC |
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Volume | 2019-March |
Conference
Conference | 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 |
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Country/Territory | United States |
City | Anaheim |
Period | 03/17/19 → 03/21/19 |
Funding
ACKNOWLEDGMENT This work is supported by Energy Production and Infrastructure Center (EPIC), Electrical and Computer Engineering Department at the University of North Carolina at Charlotte.
Keywords
- Active filter
- Double-line-frequency AC current bypass control
- Partial power processing
- Power pulsation decoupling
- Series-stacked buffer
- Series-stacked pv-battery inverter
- Single-phase dc-ac inverter