Practical Design and Implementation Procedure of an Interleaved Boost Converter Using SiC Diodes for PV Applications

The implementation of an interleaved boost converter (IBC) using SiC diodes for photovoltaic (PV) applications is presented in this paper. The converter consists of two switching cells sharing the PV panel output current. Their switching patterns are synchronized with 180° phase shift. Each switchin...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2012-06, Vol.27 (6), p.2835-2845
Main Authors: Ho, C. N., Breuninger, H., Pettersson, S., Escobar, G., Serpa, L. A., Coccia, A.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Converters
Convertors
Cooling systems
Density
Design engineering
Diode
Diodes
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electrical equipment
Electrical machines
Electronic circuits
Electronics
Exact sciences and technology
interleaved boost converter (IBC)
Inverters
MOSFET
Optimization
photovoltaic (PV)
Photovoltaic cells
Power electronics, power supplies
power semiconductor
Schottky diodes
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Signal convertors
Silicon carbide
silicon carbide (SiC)
Steady-state
Switches
Switching
Topology
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Summary:The implementation of an interleaved boost converter (IBC) using SiC diodes for photovoltaic (PV) applications is presented in this paper. The converter consists of two switching cells sharing the PV panel output current. Their switching patterns are synchronized with 180° phase shift. Each switching cell has a SiC Schottky diode and a CoolMOS switching device. The SiC diodes provide zero reverse-recovery current ideally, which reduces the commutation losses of the switches. Such an advantage from the SiC diodes enables higher efficiency and higher power density of the converter system by reducing the requirement of the cooling system. This paper presents also an optimization study of the size and efficiency of the IBC. Based on 1) the steady-state characteristic of the topology; 2) the static and dynamic characteristics of the switching cells; 3) the loss model of the magnetic components; and 4) the cooling system design, the paper provides a set of design criteria, procedures, and experimental results for a 2.5 kW IBC prototype using SiC diodes.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2011.2178269