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Unified Second-Stage LC Filter Applied in the Three-State Switching Cell Buck–Boost Converter: Static and Dynamic Analysis and Experimentation.
- Source :
-
IEEE Transactions on Industrial Electronics . Jan2020, Vol. 67 Issue 1, p225-234. 10p. - Publication Year :
- 2020
-
Abstract
- This paper presents a unified second-stage LC filter applied in the three-state switching cell buck–boost converter, which provides current and voltage with low ripple and low noise. The unified second-stage filter promotes a reduction in the number of devices while maintaining the filtering performance of the converter, with second-stage LC filters at the input and at the output. Moreover, the unified filter, when associated with a three-state switching cell buck–boost converter, allows a size reduction of filter devices, especially for designs with duty cycle range around 1/2. Furthermore, the unified filter arrangement provides nondissipative clamping of switching devices and reduce the system order when compared to the converter with second-stage LC filters. In this paper, the static and dynamic characteristics of the proposed converter in continuous conduction mode (CCM) are reported. Experimental data were obtained from a laboratory prototype with an input range of 32 $\sim$ 72 V, constant output of 48 V, a load of 150 W, and switching frequency of 45 kHz. The measured efficiency for the rated load was 97% for maximum input voltage. A comparison of the size and performance of the proposed filter with the topology that uses second-stage LC filters at the input and at the output is also presented. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FILTERS & filtration
*LOW voltage systems
Subjects
Details
- Language :
- English
- ISSN :
- 02780046
- Volume :
- 67
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Industrial Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 138481368
- Full Text :
- https://doi.org/10.1109/TIE.2019.2892674