High Efficiency Control Method for Non-Isolated Three-Port DC/DC converter
Han Y, Kaiser J, Ott L, Schulz M, Fersterra F, Gosses K, Wunder B, März M (2017)
Publication Language: English
Publication Type: Conference contribution, Conference Contribution
Publication year: 2017
Event location: Shanghai
ISBN: 978-3-8007-4429-9
Abstract
This paper presents a non-isolated three-port DC/DC converter which is optimized to connect a three-wire, bipolar ±380 VDC microgrid to different sources and loads like photovoltaics, batteries and fuel cells. A novel control method is used to reduce the switching losses and achieve an extremely high efficiency over a broad operating range.
Conventionally, pulse-width modulation (PWM) with a constant switching frequency is used to generate switching pulses. Yet, in order to reduce switching losses and increase the overall system efficiency, Triangular Current Mode (TCM) or Critical Current Mode (CrCM) control is introduced to achieve Zero Voltage Switching (ZVS) for every operating point. This also allows the use of higher switching frequencies resulting in greatly reduced passive component sizes.
Conclusively, a 6 kW prototype DC/DC
converter is presented to verify the proposed control method. The prototype
achieves a peak efficiency of 99.3%.
Authors with CRIS profile
Yunchao Han
Lehrstuhl für Leistungselektronik (LEE)
Bernd Wunder
Lehrstuhl für Leistungselektronik (LEE)
Martin März
Lehrstuhl für Leistungselektronik (LEE)
Involved external institutions
Germany (DE)How to cite
APA:
Han, Y., Kaiser, J., Ott, L., Schulz, M., Fersterra, F., Gosses, K.,... März, M. (2017). High Efficiency Control Method for Non-Isolated Three-Port DC/DC converter. In VDE (Eds.), Proceedings of the 2017 PCIM Asia. Shanghai, CN.
MLA:
Han, Yunchao, et al. "High Efficiency Control Method for Non-Isolated Three-Port DC/DC converter." Proceedings of the 2017 PCIM Asia, Shanghai Ed. VDE, 2017.
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