High efficiency wide load range buck/boost/bridge photovoltaic microconverter

Richard K. Hester; Christopher Thornton; Sairaj Dhople; Zheng Zhao; Nagarajan Sridhar; Dave Freeman

doi:10.1109/APEC.2011.5744613

High efficiency wide load range buck/boost/bridge photovoltaic microconverter

Richard K. Hester, Christopher Thornton, Sairaj Dhople, Zheng Zhao, Nagarajan Sridhar, Dave Freeman

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

51 Scopus citations

Abstract

Series strings of photovoltaic modules with integrated dc-dc microconverters can harvest more energy compared to conventional string-inverter architectures if the arrays are partially shaded or the modules mismatched. This work presents a multi-mode dc-dc converter as a candidate microconverter topology for photovoltaic modules. The topology constitutes a single inductor and four switching devices and can function in either buck, boost or an intermediate bridge mode based on the load. The proposed maximum power point tracking scheme is capable of tracking the true maximum even in partially-shaded PV modules. An experimental prototype demonstrates efficiency above 95 % at 215 W over a load range of 3 A to 7 A.

Original language	English (US)
Title of host publication	2011 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011
Pages	309-313
Number of pages	5
DOIs	https://doi.org/10.1109/APEC.2011.5744613
State	Published - 2011
Event	26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011 - Fort Worth, TX, United States Duration: Mar 6 2011 → Mar 10 2011

Publication series

Name	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Other

Other	26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011
Country/Territory	United States
City	Fort Worth, TX
Period	3/6/11 → 3/10/11

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access

10.1109/APEC.2011.5744613

OpenUrl availability

Full text

Cite this

Hester, R. K., Thornton, C., Dhople, S., Zhao, Z., Sridhar, N., & Freeman, D. (2011). High efficiency wide load range buck/boost/bridge photovoltaic microconverter. In 2011 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011 (pp. 309-313). Article 5744613 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). https://doi.org/10.1109/APEC.2011.5744613

High efficiency wide load range buck/boost/bridge photovoltaic microconverter. / Hester, Richard K.; Thornton, Christopher; Dhople, Sairaj et al.
2011 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011. 2011. p. 309-313 5744613 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hester, RK, Thornton, C, Dhople, S, Zhao, Z, Sridhar, N & Freeman, D 2011, High efficiency wide load range buck/boost/bridge photovoltaic microconverter. in 2011 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011., 5744613, Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, pp. 309-313, 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011, Fort Worth, TX, United States, 3/6/11. https://doi.org/10.1109/APEC.2011.5744613

Hester RK, Thornton C, Dhople S, Zhao Z, Sridhar N, Freeman D. High efficiency wide load range buck/boost/bridge photovoltaic microconverter. In 2011 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011. 2011. p. 309-313. 5744613. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). doi: 10.1109/APEC.2011.5744613

@inproceedings{0d0cb3d832854991ac749fa7c449b55f,

title = "High efficiency wide load range buck/boost/bridge photovoltaic microconverter",

abstract = "Series strings of photovoltaic modules with integrated dc-dc microconverters can harvest more energy compared to conventional string-inverter architectures if the arrays are partially shaded or the modules mismatched. This work presents a multi-mode dc-dc converter as a candidate microconverter topology for photovoltaic modules. The topology constitutes a single inductor and four switching devices and can function in either buck, boost or an intermediate bridge mode based on the load. The proposed maximum power point tracking scheme is capable of tracking the true maximum even in partially-shaded PV modules. An experimental prototype demonstrates efficiency above 95 % at 215 W over a load range of 3 A to 7 A.",

author = "Hester, {Richard K.} and Christopher Thornton and Sairaj Dhople and Zheng Zhao and Nagarajan Sridhar and Dave Freeman",

year = "2011",

doi = "10.1109/APEC.2011.5744613",

language = "English (US)",

isbn = "9781424480845",

series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",

pages = "309--313",

booktitle = "2011 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011",

note = "26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011 ; Conference date: 06-03-2011 Through 10-03-2011",

}

TY - GEN

T1 - High efficiency wide load range buck/boost/bridge photovoltaic microconverter

AU - Hester, Richard K.

AU - Thornton, Christopher

AU - Dhople, Sairaj

AU - Zhao, Zheng

AU - Sridhar, Nagarajan

AU - Freeman, Dave

PY - 2011

Y1 - 2011

N2 - Series strings of photovoltaic modules with integrated dc-dc microconverters can harvest more energy compared to conventional string-inverter architectures if the arrays are partially shaded or the modules mismatched. This work presents a multi-mode dc-dc converter as a candidate microconverter topology for photovoltaic modules. The topology constitutes a single inductor and four switching devices and can function in either buck, boost or an intermediate bridge mode based on the load. The proposed maximum power point tracking scheme is capable of tracking the true maximum even in partially-shaded PV modules. An experimental prototype demonstrates efficiency above 95 % at 215 W over a load range of 3 A to 7 A.

AB - Series strings of photovoltaic modules with integrated dc-dc microconverters can harvest more energy compared to conventional string-inverter architectures if the arrays are partially shaded or the modules mismatched. This work presents a multi-mode dc-dc converter as a candidate microconverter topology for photovoltaic modules. The topology constitutes a single inductor and four switching devices and can function in either buck, boost or an intermediate bridge mode based on the load. The proposed maximum power point tracking scheme is capable of tracking the true maximum even in partially-shaded PV modules. An experimental prototype demonstrates efficiency above 95 % at 215 W over a load range of 3 A to 7 A.

UR - http://www.scopus.com/inward/record.url?scp=79955755269&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955755269&partnerID=8YFLogxK

U2 - 10.1109/APEC.2011.5744613

DO - 10.1109/APEC.2011.5744613

M3 - Conference contribution

AN - SCOPUS:79955755269

SN - 9781424480845

T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

SP - 309

EP - 313

BT - 2011 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011

T2 - 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011

Y2 - 6 March 2011 through 10 March 2011

ER -

High efficiency wide load range buck/boost/bridge photovoltaic microconverter

Abstract

Publication series

Other

UN SDGs

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this