High efficiency power conditioner for photovoltaic power generation system

Author

Urakabe, T. ; Fujiwara, K. ; Kawakami, T. ; Nishio, N.

Author_Institution

Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Amagasaki, Japan

fYear

2010

fDate

21-24 June 2010

Firstpage

3236

Lastpage

3240

Abstract

In this paper, the techniques for a gradationally controlled voltage inverter (GCVI), which is a high efficiency inverter, and a high efficiency power conditioner utilizing the GCVI technique for photovoltaic power generation systems are described. A GCVI consists of several inverters operated at different voltages in series and outputs voltage with a sine waveform by combining these outputs. The features of GCVI are low power loss, low electromagnetic noise, small output filters and generating an AC voltage higher than the DC voltage input into the GCVI. The last feature helps the DC/DC converter of the power conditioner to operate at high efficiency. The GCVI type power conditioner (PV-PN40G) achieves high efficiency, which is 97.5% at the maximum power point, a sealed structure, and quietness, 30 dB noise.

Keywords

DC-DC power convertors; invertors; photovoltaic power systems; DC-DC converter; GCVI; PV-PN40G; gradationally controlled voltage inverter; high-efficiency power conditioner; maximum power point; output filters; photovoltaic power generation system; AC generators; Control systems; Electromagnetic interference; Filters; Inverters; Magnetic losses; Noise generators; Photovoltaic systems; Solar power generation; Voltage control; high efficiency; inverter; photovoltaic power generation system; power conditioner;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (IPEC), 2010 International

Conference_Location

Sapporo

Print_ISBN

978-1-4244-5394-8

Type

conf

DOI

10.1109/IPEC.2010.5543123

Filename

5543123