Novel technique for improved power conversion efficiency in PV systems with battery back-up

Author

Snyman, D.B. ; Enslin, J.H.R.

Author_Institution

ESKOM, Nelspruit, South Africa

fYear

1991

fDate

5-8 Nov 1991

Firstpage

86

Lastpage

91

Abstract

A novel technique for the improvement of power conversion efficiencies in photovoltaic (PV) systems with battery back-up is presented and analyzed, and applications for this parallel power conversion technique (PPCT) are suggested. The PPCT may increase the available energy in an existing PV system, using a polarity changing maximum power point tracker (MPPT), or a split battery system, without adding anything to the PV system. This is accomplished by rewiring the PV system, utilizing the PPCT. The PPCT may also be used to reduce the power rating of the PV array in new PV systems with battery back-up. This PPCT is also illustrated in a compound converter and a new topology for a MPPT is described. Experimental results using this PPCT are presented

Keywords

cells (electric); photovoltaic power systems; power convertors; solar cell arrays; MPPT; PPCT; PV systems; battery back-up; compound converter; parallel power conversion technique; polarity changing maximum power point tracker; power conversion efficiency; power rating; solar cell array; split battery system; Batteries; Costs; Energy measurement; Manufacturing; Photovoltaic systems; Power conditioning; Power conversion; Regulators; Solar power generation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1991. INTELEC '91., 13th International

Conference_Location

Kyoto

Print_ISBN

0-87942-670-5

Type

conf

DOI

10.1109/INTLEC.1991.172378

Filename

172378