DocumentCode :
993036
Title :
3boost: A High-Power Three-Phase Step-Up Full-Bridge Converter for Automotive Applications
Author :
Franceschini, Giovanni ; Lorenzani, Emilio ; Cavatorta, Matteo ; Bellini, Alberto
Author_Institution :
Univ. of Parma, Parma
Volume :
55
Issue :
1
fYear :
2008
Firstpage :
173
Lastpage :
183
Abstract :
This paper describes a simple dc-dc step-up converter topology for switch-mode dc power supplies. The proposed configuration is well suited for high-power applications with battery supply. In the automotive framework, the push-pull architecture is the most widespread. However, as power increases, the use of a full-bridge architecture is mandatory. This paper presents a full-bridge architecture where the traditional single-phase transformer is replaced by a three-phase transformer. A prototype was realized and tested for the power supply of automotive devices. In this environment, one of the most important requirements is the ability to provide a burst of power during short-duration events, together with high-efficiency and high-quality output voltage. The latter constraints can be achieved by only using closed-loop switch-mode dc-dc converters at high switching frequency, thus reducing converter efficiency and creating electromagnetic-compatibility (EMC) problems. In this paper, the aforementioned issues were tackled relying on an open-loop topology. Open-loop converters are feasible if the output resistance of the converter is as low as possible, and a possible solution is the minimization of power losses. The solution is the use of a three-phase transformer with a delta-wye connection within a full-bridge converter topology. The configuration will be referred to as 3boost power supply. The three-phase transformer replaces the common single-phase transformer, and it is driven by a three-phase full-bridge inverter operating in six-step modulation. At secondary, a three-phase full wave diode rectifier is used to obtain the output dc voltage level. Therefore, a unitary transformer utilization factor is achieved. A simple theoretical comparison between the three types of converters-push-pull, conventional full bridge, and 3boost is shown. A low-power version of the converter was realized. Experiments confirm that this topology allows to achieve a high efficiency, a low- er ripple factor, and a good EMC behavior.
Keywords :
DC-DC power convertors; PWM invertors; automotive electronics; electromagnetic compatibility; invertors; rectifying circuits; switched mode power supplies; automotive applications; closed loop switch mode dc dc converters; dc dc step up converter topology; delta wye connection; full bridge converter topology; high power three phase step up full bridge converter; high switching frequency; open loop converters; pulsewidth modulated power converters; switch mode dc power supplies; three phase full bridge inverter; three phase transformer; Automotive applications; Automotive engineering; Batteries; DC-DC power converters; Electromagnetic compatibility; Phase transformers; Power supplies; Prototypes; Switching converters; Topology; DC–DC power conversion; DC-DC power conversion; Pulse width modulated power converters; pulsewidth-modulated power converters;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2007.905930
Filename :
4391080
Link To Document :
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