Presentation 2019-05-17
Integrated Converter Combining PWM Step-Up Converter and Differential Power Processing Converter to Enhance Energy Yield of Photovoltaic Panels under Partial Shading
Yusuke Sasaki, Toru Nakane, Masatoshi Uno,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Partial shading on a photovoltaic (PV) panel consisting of multiple substrings is known to trigger significant reduction in power yield and occurrence of multiple maximum power points (MPPs). Although the adoption of a differential power processing (DPP) converter can eliminate the negative influences of partial shading by virtually equalizing electrical characteristics of all substrings, an additional DPP converter is separately required in addition to a step-up converter for panel control, resulting in increased circuit volume and system complexity. This paper proposes an integrated converter that realizes system simplification and circuit miniaturization by integrating a step-up converter and a DPP converter. The experimental equalization tests for four substrings connected in series were performed emulating partial shading conditions. With the proposed converter, a local MPP vanished and the power yield increased by 21.7% while boosting the panel voltage, demonstrating the efficacy of the proposed integrated converter.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Partial Shading / Differential Power Processing Converter / PWM Step-Up Converter / Integrated Converter
Paper # EE2019-16
Date of Issue 2019-05-09 (EE)

Conference Information
Committee EE / IEE-HCA
Conference Date 2019/5/16(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Kikai-Shinko-Kaikan Bldg.
Topics (in Japanese) (See Japanese page)
Topics (in English) Switching power supply, New industrial and home appliance for power, others
Chair Tadatoshi Babasaki(NTT Facilities)
Vice Chair Keiichi Hirose(NTT Facilities) / Tadashi Suetsugu(Fukuoka Univ.)
Secretary Keiichi Hirose(Sojo Univ.) / Tadashi Suetsugu(Nagasaki Inst. of Applied Science)
Assistant Takashi Matsushita(NTT-F) / Tetsuya Oshikata(ShinDengen) / Yuu Yonezawa(Fujitsu Lab.)

Paper Information
Registration To Technical Committee on Energy Engineering in Electronics and Communications / Technical Meeting on Home and Consumer Appliances
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Integrated Converter Combining PWM Step-Up Converter and Differential Power Processing Converter to Enhance Energy Yield of Photovoltaic Panels under Partial Shading
Sub Title (in English)
Keyword(1) Partial Shading
Keyword(2) Differential Power Processing Converter
Keyword(3) PWM Step-Up Converter
Keyword(4) Integrated Converter
1st Author's Name Yusuke Sasaki
1st Author's Affiliation Ibaraki University(Ibaraki Univ.)
2nd Author's Name Toru Nakane
2nd Author's Affiliation Ibaraki University(Ibaraki Univ.)
3rd Author's Name Masatoshi Uno
3rd Author's Affiliation Ibaraki University(Ibaraki Univ.)
Date 2019-05-17
Paper # EE2019-16
Volume (vol) vol.119
Number (no) EE-32
Page pp.pp.101-106(EE),
#Pages 6
Date of Issue 2019-05-09 (EE)