TY - GEN
T1 - A New Voltage Balancer with DC-DC Converter Function
AU - Kim, Sanghun
AU - Kim, Heung Geun
AU - Cha, Honnyong
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - In dc microgrid, a bipolar dc bus configuration has more merits than an unipolar one, due to higher reliability, easy grounding, and having more voltage levels. However, tight voltage balancing control is necessary to handle unbalanced power between positive and negative buses. To solve this issue effectively, this paper proposes a new voltage balancer with dc-dc converter function. The proposed balancer can serve as both a voltage balancer and a bidirectional dc-dc converter. Thus, it can be applied to battery management system or fast charger in electric vehicles (EVs) charging station while balancing the bipolar dc bus voltages. Unlike the conventional voltage balancing control using a three-level dc-dc converter, the voltage balancing range of the proposed system is not limited. To confirm this superiority, a comparison of the voltage balancing range between the proposed and conventional scheme is explored. Simulation and experimental results are provided in order to validate the effectiveness of the proposed system.
AB - In dc microgrid, a bipolar dc bus configuration has more merits than an unipolar one, due to higher reliability, easy grounding, and having more voltage levels. However, tight voltage balancing control is necessary to handle unbalanced power between positive and negative buses. To solve this issue effectively, this paper proposes a new voltage balancer with dc-dc converter function. The proposed balancer can serve as both a voltage balancer and a bidirectional dc-dc converter. Thus, it can be applied to battery management system or fast charger in electric vehicles (EVs) charging station while balancing the bipolar dc bus voltages. Unlike the conventional voltage balancing control using a three-level dc-dc converter, the voltage balancing range of the proposed system is not limited. To confirm this superiority, a comparison of the voltage balancing range between the proposed and conventional scheme is explored. Simulation and experimental results are provided in order to validate the effectiveness of the proposed system.
KW - Bidirectional DC-DC converter
KW - Bipolar dc bus
KW - Series-capacitor DC-DC converter
KW - Voltage balancer
KW - Voltage balancing control
UR - http://www.scopus.com/inward/record.url?scp=85062067502&partnerID=8YFLogxK
U2 - 10.1109/ACEPT.2018.8610826
DO - 10.1109/ACEPT.2018.8610826
M3 - Conference contribution
AN - SCOPUS:85062067502
T3 - 2018 Asian Conference on Energy, Power and Transportation Electrification, ACEPT 2018
BT - 2018 Asian Conference on Energy, Power and Transportation Electrification, ACEPT 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 Asian Conference on Energy, Power and Transportation Electrification, ACEPT 2018
Y2 - 30 October 2018 through 2 November 2018
ER -
