Title :
Current or Time Sharing Switches for High Efficiency Photovoltaic Power Systems
Author :
Dehbonei, H. ; Ko, S.H. ; Lee, S.R. ; Borle, L. ; Nayar, C.V.
Author_Institution :
Dept. of Electr. & Comput. Eng., Curtin Univ. of Technol., Perth, WA
Abstract :
This paper presents a comparative analysis of the parallel operation of different switches in a switch mode power converter. In high power applications, multi-switch PWM power conditioners may be preferred despite a higher component count, due to the absence of low frequency filters, reduced switching losses and fault tolerance. The paper demonstrates how current sharing (CSH) and time sharing (TSH) lead to the reduction of switching stress in the parallel operation of switches in any converter. The solutions proposed in this study can be applied on different scales to other power conditioners for renewable energy applications. Discussions of the concepts, hypotheses and computer simulations are verified by 1 kW experimental results
Keywords :
PWM power convertors; fault tolerance; losses; photovoltaic power systems; power generation faults; switched mode power supplies; switching convertors; 1 kW; comparative analysis; current sharing switches; fault tolerance; high efficiency photovoltaic power systems; multiswitch PWM power conditioners; switch mode power converter; switching losses; switching stress reduction; time sharing switches; Fault tolerance; Filters; Frequency; Lead time reduction; Photovoltaic systems; Pulse width modulation; Switches; Switching converters; Switching loss; Time sharing computer systems; Converters; Efficiency; PWM; Power Conversion; Switching;
Conference_Titel :
IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on
Conference_Location :
Paris
Print_ISBN :
1-4244-0390-1
DOI :
10.1109/IECON.2006.347873
