Area of research
Electrical and Electronic Engineering · Atomic and Molecular Physics, and Optics
Research interest
Research topics from publications: Low-Frequency Resonance Suppression of a Dual-Active-Bridge DC/DC converter Enabled DC Microgrid; Impedance Modeling and DC Bus Voltage Stability Assessment of a Solid-State-Transformer-Enabled Hybrid AC–DC Grid Considering Bidirectional Power Flow; Multiple Resonances Mitigation of Paralleled Inverters in a Solid-State Transformer (SST) Enabled AC Microgrid; DC impedance modeling and stability analysis of modular multilevel converter for MVDC application; Stability analysis and improvement of a dual active bridge (DAB) converter enabled DC microgrid based on a reduced-order low frequency model. Representative work: In this paper, the small signal stability issue of a dual-active-bridge (DAB) converter enabled dc microgrid is addressed. The derived impedance characteristic of the source DAB converter reveal that the stability of this dc grid is decided by the low-frequency terminal behaviors of integrated units, which is different from that of dc microgrids powered by other types of source converters. At this low-frequency range, the tightly regulated load converter exhibits constant power load behavior even with a low control bandwidth, which degrades system stability by exacerbating interactions among power converters. Moreover, the deployed power management strategy requires operating mode transition The solid-state-transformer (SST) is a promising technology in the future smart grid. Compared to the line-frequency transformer, the SST has more control flexibilities and the plug and play ability, which allow it to interconnect a hybrid ac-dc multiterminal grid for reliable and flexible power distribution. The dc bus voltage stability of an SST-enabled hybrid ac-dc multiterminal grid is a critical issue due to the dynamic interactions of power converters, which has been investigated in this article. The output impedance modeling method of the dual active bridge (DAB) dc/dc converters considering both the control schemes and bidirectional power flow effect is proposed. Depending on the con
Impedance Modeling and DC Bus Voltage Stability Assessment of a Solid-State-Transformer-Enabled Hybrid AC–DC Grid Considering Bidirectional Power Flow
Low-Frequency Resonance Suppression of a Dual-Active-Bridge DC/DC converter Enabled DC Microgrid
Multiple Resonances Mitigation of Paralleled Inverters in a Solid-State Transformer (SST) Enabled AC Microgrid
DC impedance modeling and stability analysis of modular multilevel converter for MVDC application
Stability analysis and improvement of a dual active bridge (DAB) converter enabled DC microgrid based on a reduced-order low frequency model