TY - JOUR
T1 - Distributed Dynamic Event-triggered Control for Accurate Active and Harmonic Power Sharing in Modular On-line UPS Systems
AU - Lu, Jinghang
AU - Savaghebi, Mehdi
AU - Zhang, Bingfu
AU - Hou, Xiaochao
AU - Sun, Yao
AU - Guerrero, Josep M.
N1 - Publisher Copyright:
IEEE
PY - 2022/12/1
Y1 - 2022/12/1
N2 - Due to the mismatched line resistance in the modular online uninterruptible power supply (UPS) systems, accurate active power and harmonic power sharing is an arduous work. To tackle this issue, this article proposes a distributed dynamic event-triggered control for the power sharing to accurately compensate the effect of mismatch among the line resistances. Benefiting from the proposed control strategy, the UPS modules adaptively regulate the virtual resistance at the fundamental and harmonic frequencies, and hence, the accurate active power and harmonic power sharing are achieved. In addition, the suggested technique allows the UPS modules to exchange information at only the event-triggered times, which greatly reduces the number of communication among the neighboring units. Furthermore, the system's stability is analyzed using a Lyapunov function. Finally, experimental case studies are provided to evaluate the performance of the proposed control strategy, showing its effectiveness in achieving the accurate power sharing, and plug-and-play capability.
AB - Due to the mismatched line resistance in the modular online uninterruptible power supply (UPS) systems, accurate active power and harmonic power sharing is an arduous work. To tackle this issue, this article proposes a distributed dynamic event-triggered control for the power sharing to accurately compensate the effect of mismatch among the line resistances. Benefiting from the proposed control strategy, the UPS modules adaptively regulate the virtual resistance at the fundamental and harmonic frequencies, and hence, the accurate active power and harmonic power sharing are achieved. In addition, the suggested technique allows the UPS modules to exchange information at only the event-triggered times, which greatly reduces the number of communication among the neighboring units. Furthermore, the system's stability is analyzed using a Lyapunov function. Finally, experimental case studies are provided to evaluate the performance of the proposed control strategy, showing its effectiveness in achieving the accurate power sharing, and plug-and-play capability.
KW - Adaptive virtual resistance
KW - Dynamic Event-triggered control
KW - Harmonic analysis
KW - Impedance
KW - Inverters
KW - Power sharing
KW - Reactive power
KW - Resistance
KW - Uninterruptible power systems
KW - UPS system
KW - Voltage control
UR - http://www.scopus.com/inward/record.url?scp=85121804977&partnerID=8YFLogxK
U2 - 10.1109/TIE.2021.3134057
DO - 10.1109/TIE.2021.3134057
M3 - Journal article
AN - SCOPUS:85121804977
SN - 0278-0046
VL - 69
SP - 13045
EP - 13055
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 12
ER -