DocumentCode :
690684
Title :
Single Ended Primary Inductor Converter reliance of efficiency on switching frequency for use in MPPT application
Author :
Burmester, Daniel ; Rayudu, Ramesh ; Exley, Tim
Author_Institution :
Sch. of Eng. & Comput. Sci., Victoria Univ. of Wellington, Wellington, New Zealand
fYear :
2013
fDate :
8-11 Dec. 2013
Firstpage :
1
Lastpage :
6
Abstract :
This paper discusses the dependence of efficiency on the switching frequency of a Single Ended Primary Inductor Converter (SEPIC), for use in photovoltaic (PV) maximum power point tracking (MPPT) applications. An MPPT system comprises of a DC/DC converter and tracking algorithm set to run the PV at its maximum power point. The SEPIC is a non-inverting DC/DC converter able to output a voltage greater or less than the input voltage. In this paper we analyse the theoretical losses of the SEPIC and compare them with the practical losses measured at various switching frequency. The results show that the switching frequency of the device determines its physical size, cost and efficiency. The frequencies tested in this paper were 50Khz, 200kHz and 400kHz, with a 7% drop in efficiency between each frequency. As the switching frequency increases, the units become physically smaller and so cheaper. This however is at the cost of efficiency.
Keywords :
inductors; maximum power point trackers; solar cells; switching convertors; MPPT application; PV; SEPIC; frequency 200 kHz; frequency 400 kHz; frequency 50 kHz; noninverting DC-DC converter; photovoltaic maximum power point tracking applications; single ended primary inductor converter reliance; switching frequency; Educational institutions; Equations; Inductors; MOSFET; Mathematical model; Maximum power point trackers; Switching frequency;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2013 IEEE PES Asia-Pacific
Conference_Location :
Kowloon
Type :
conf
DOI :
10.1109/APPEEC.2013.6837187
Filename :
6837187
Link To Document :
بازگشت