Title :
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
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;
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
DOI :
10.1109/IPEC.2010.5543123
