TY - JOUR
T1 - Optimal State-Constrained Control of DC Shipboard Power Systems for Online Pulsed Power Load Accommodation
AU - Tu, Zhenghong
AU - Fan, Bo
AU - Zhang, Wei
AU - Peng, Jiangkai
AU - Liu, Wenxin
N1 - Publisher Copyright:
© 2010-2012 IEEE.
PY - 2022/1/1
Y1 - 2022/1/1
N2 - Pulsed power loads (PPLs) consume a huge amount of energy within a short time. An energy storage system (ESS) is usually installed in a shipboard power system (SPS) for PPL accommodation. Online accommodation strategies, where the PPL is connected to the SPS through the ESS all the time, have great advantages in reducing the hardware cost and increasing the PPL deployment frequency. But there is a lack of online accommodation solutions to deal with the operational requirements. This article presents a barrier-Lyapunov-function-based optimal control solution for online PPL accommodation in dc SPSs. By introducing the state-constrained technique, the operational constraints on the supply current for PPL accommodation and the bus voltage are all respected. Three control objectives, including safe and fast ESS charging, high-quality regulation of the dc bus voltage, and generation cost dynamic minimization, are realized simultaneously. The stability and optimality of the control solution are guaranteed rigorously via the Lyapunov synthesis. Simulations based on a switch-level SPS model demonstrate the effectiveness of the proposed control solution.
AB - Pulsed power loads (PPLs) consume a huge amount of energy within a short time. An energy storage system (ESS) is usually installed in a shipboard power system (SPS) for PPL accommodation. Online accommodation strategies, where the PPL is connected to the SPS through the ESS all the time, have great advantages in reducing the hardware cost and increasing the PPL deployment frequency. But there is a lack of online accommodation solutions to deal with the operational requirements. This article presents a barrier-Lyapunov-function-based optimal control solution for online PPL accommodation in dc SPSs. By introducing the state-constrained technique, the operational constraints on the supply current for PPL accommodation and the bus voltage are all respected. Three control objectives, including safe and fast ESS charging, high-quality regulation of the dc bus voltage, and generation cost dynamic minimization, are realized simultaneously. The stability and optimality of the control solution are guaranteed rigorously via the Lyapunov synthesis. Simulations based on a switch-level SPS model demonstrate the effectiveness of the proposed control solution.
KW - DC shipboard power system
KW - generation cost minimization
KW - online PPL accommodation
KW - pulsed power load (PPL)
KW - state-constrained control
UR - https://www.scopus.com/pages/publications/85117866062
U2 - 10.1109/TSG.2021.3120599
DO - 10.1109/TSG.2021.3120599
M3 - 文章
AN - SCOPUS:85117866062
SN - 1949-3053
VL - 13
SP - 96
EP - 105
JO - IEEE Transactions on Smart Grid
JF - IEEE Transactions on Smart Grid
IS - 1
ER -