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Advanced Digital Controller for Improving Input Current Quality of Integrated Active Virtual Ground-Bridgeless PFC.
- Source :
-
IEEE Transactions on Power Electronics . Apr2019, Vol. 34 Issue 4, p3921-3936. 16p. - Publication Year :
- 2019
-
Abstract
- This paper presents a new digital control scheme for active virtual ground-bridgeless PFC (AVG-BPFC), which is able to obtain an optimized solution between the system efficiency and electromagnetic interference performance in the PFC stage. However, a resonant characteristic is generated from the input LCL filter structure of the converter. In addition, there is a phase difference between two inductor currents which also leads the controller design in the AVG-BPFC to become challenging, especially on the system stability and current quality. Thus, a triple loop control's architecture together with an integrated state machine is proposed as the control methodology of the AVG-BPFC. Under the simple control structure in the digital platform, a stable system is achieved together with a precise grid current tracking function. Such control scheme was implemented digitally on a 1.5 kW prototype. In this paper, theoretical models of the whole system were analyzed and the system performance was successfully verified in both steady state and transient state conditions. The experimental results show a good agreement with the theoretical knowledge. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DC-to-DC converters
*ARCHITECTURE
*ELECTROMAGNETIC interference
*QUALITY
Subjects
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 34
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 135356458
- Full Text :
- https://doi.org/10.1109/TPEL.2018.2855687