TY - GEN
T1 - Comparison of voltage control methods of chb converters for power routing in smart transformer
AU - Raveendran, Vivek
AU - Buticchi, Giampaolo
AU - Liserre, Marco
AU - Mercante, Alessandro
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/11/3
Y1 - 2017/11/3
N2 - For Smart Transformers (ST), reliability is one of the major problems when compared to the traditional lowfrequency transformers. Modular ST with advanced control algorithms could increase the reliability compared to the nonmodular solutions. This could be achieved by distributing differently the power among the cells depending on their aging. This unequal power transfer is a challenge for Cascaded HBridge converters (CHB). ST based on a CHB rectifier with different capacitor voltage balancing schemes are analyzed in the paper. The goal is to evaluate the best scheme for unequal power transfer while maintaining the dc-link voltages constant. The paper focuses on validating the operating power unbalance limits of each cell of the modular system for unbalanced power transfer while maintaining the voltage balance in the medium voltage dc-link stage. The power unbalance limits are established with analytical calculations and verified through simulations and experiments.
AB - For Smart Transformers (ST), reliability is one of the major problems when compared to the traditional lowfrequency transformers. Modular ST with advanced control algorithms could increase the reliability compared to the nonmodular solutions. This could be achieved by distributing differently the power among the cells depending on their aging. This unequal power transfer is a challenge for Cascaded HBridge converters (CHB). ST based on a CHB rectifier with different capacitor voltage balancing schemes are analyzed in the paper. The goal is to evaluate the best scheme for unequal power transfer while maintaining the dc-link voltages constant. The paper focuses on validating the operating power unbalance limits of each cell of the modular system for unbalanced power transfer while maintaining the voltage balance in the medium voltage dc-link stage. The power unbalance limits are established with analytical calculations and verified through simulations and experiments.
UR - http://www.scopus.com/inward/record.url?scp=85041436776&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2017.8095991
DO - 10.1109/ECCE.2017.8095991
M3 - Conference contribution
AN - SCOPUS:85041436776
T3 - 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
SP - 1652
EP - 1658
BT - 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017
Y2 - 1 October 2017 through 5 October 2017
ER -