High Efficiency Control Method for Non-Isolated Three-Port DC/DC converter

Beitrag bei einer Tagung

Details zur Publikation

Autor(en): März M, Han Y, Kaiser J, Ott L, Schulz M, Fersterra F, Gosses K, Wunder B
Herausgeber: VDE
Jahr der Veröffentlichung: 2017
ISBN: 978-3-8007-4429-9
Sprache: Englisch


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%.

FAU-Autoren / FAU-Herausgeber

Han, Yunchao
Lehrstuhl für Leistungselektronik
März, Martin Prof. Dr.
Lehrstuhl für Leistungselektronik
Wunder, Bernd
Lehrstuhl für Leistungselektronik

Autor(en) der externen Einrichtung(en)
Fraunhofer-Institut für Integrierte Systeme und Bauelementetechnologie (IISB)


März, M., Han, Y., Kaiser, J., Ott, L., Schulz, M., Fersterra, F.,... Wunder, B. (2017). High Efficiency Control Method for Non-Isolated Three-Port DC/DC converter. In VDE (Eds.), . Shanghai, CN.

März, Martin, et al. "High Efficiency Control Method for Non-Isolated Three-Port DC/DC converter." Proceedings of the 2017 PCIM Asia, Shanghai Ed. VDE, 2017.


Zuletzt aktualisiert 2018-07-08 um 08:23