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Impedance coordinative control for cascaded converter in bidirectional application
Tian, Yanjun Deng, Fujin Chen, Zhe Sun, Xiaofeng Hu, Yanting
Tian, Yanjun
Deng, Fujin
Chen, Zhe
Sun, Xiaofeng
Hu, Yanting
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EPub Date
Publication Date
2015-06-30
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Abstract
Two stage cascaded converters are widely used in bidirectional applications, but the negative impedance may cause system instability. Actually the impedance interaction is much different between forward power flow and reversed power flow, which will introduce more uncertainty to the system stability. This paper proposes a control method for the constant power controlled converter in cascaded system, and consequently it can change the negative impedance of constant power converter into resistive impedance, which will improve the cascaded system stability, as well as merge the impedance difference between forward and reversed power flow. This paper addresses the analysis with the topology of cascaded dual-active-bridge converter (DAB) with inverter, and the proposed control method can also be implemented in unidirectional applications and other general cascaded converter system. The effectiveness has been validated by both simulation and experimental results.
Citation
Yanjun, T., Fujin, D., Zhe, C., Xiaofeng, S., & Yanting, H. (2015, 1-5 June). Impedance coordinative control for cascaded converter in bidirectional application. Paper presented at the Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference.
Publisher
IEEE
Journal
Research Unit
DOI
10.1109/ICPE.2015.7167967
PubMed ID
PubMed Central ID
Type
Conference Contribution
Language
en
Description
© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Series/Report no.
ISSN
2150-6078
EISSN
2150-6086