Dr. Xiaochao Hou

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Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 June 2019 in IEEE Transactions on Power Electronics

Journal Article

Improvement of Frequency Regulation in VSG-Based AC Microgrid Via Adaptive Virtual Inertia

21 November 2018 in IEEE Access

Journal Article

Distributed Hierarchical Control of AC Microgrid Operating in Grid-Connected, Islanded and Their Transition Modes

Xiaochao Hou

Yao Sun

Jinghang Lu

Xin Zhang

Leong Hai Koh

Josep M. Guerrero

6 July 2023 in IEEE Transactions on Power Systems

Journal Article

Quantitative Parameters Design of VSG Oriented to Transient Synchronization Stability

Shimiao Chen

This letter addresses the parameters design problem for converter-based virtual synchronous generators (VSGs), which is crucial for stable operation. Existing methods only consider performance optimization based on the small-signal model or qualitative analysis of large-signal stability. However, it remains to be elucidated on how to quantitatively design virtual inertia and damping to ensure transient stability. In this letter, sufficient conditions of VSG control parameters for transient synchronization stability are derived using Lyapunov direct method. Then, a systematic feasible parameters region is obtained that satisfies grid-code-based transient stability and rate-of-change-of-frequency (RoCoF) requirement under large disturbances. As a result, this letter provides a practical reference for control parameters design and engineering application of VSG. Control-hardware-in-the-loop (CHIL) experiment validates the designed control parameters region.

14 September 2017 in IEEE Transactions on Power Systems

Journal Article

An f-P/Q Droop Control in Cascaded-Type Microgrid

In cascaded-type microgrid, the synchronization and power balance of distributed generators become two new issues that needs to be addressed urgently. To that end, an f-P/Q droop control is proposed in this letter, and its stability is analyzed as well. This new droop control is capable to achieve power balance under both resistive-inductive and resistive-capacitive loads autonomously. Compared with the inverse power factor droop control, its advantage consists in extending the scope of application. Finally the feasibility of the proposed method is verified by simulation results.

4 June 2020 in IEEE Transactions on Industrial Electronics

Journal Article

A Reduced-Order Generalized Proportional Integral Observer-Based Resonant Super-Twisting Sliding Mode Control for Grid-Connected Power Converters

This article presents a reduced-order generalized proportional-integral observer based resonant super-twisting sliding mode controller (RST-SMC) for the three-phase ac-dc converters. On the contrary to utilizing the proportional-integral controller in regulating the dc-link voltage, which may cause large undershoot/overshoot under the disturbance, the proposed voltage control strategy for the dc-link has high disturbance rejection ability and the settling time has been greatly reduced. In addition, the proposed RST-SMC in the current control loop not only preserve the merits of the sliding mode controller but also achieve the current tracking without steady-state error in the stationary α- β frame. The effectiveness of the proposed method has been verified by a lab-constructed experimental prototype.

27 October 2021 in IEEE Transactions on Sustainable Energy

Journal Article

Distributed Dynamic Event-Triggered Control for Voltage Restoration and Current Sharing in DC Microgrids

Jinghang Lu

Xingyu Zhang

Bingfu Zhang

Xiaochao Hou

Peng Wang

Due to the droop control applied in islanded DC microgrids, DC bus voltage recovery, and current sharing cannot be guaranteed simultaneously. To solve this problem, a distributed dynamic event-triggered control method is proposed in this paper. The presented control scheme can remove DC bus voltage deviation while achieving the current sharing among distributed generation (DG) units. In addition, the proposed method requires no global information, and only the DC bus voltage from the physical network is needed. Moreover, the data of neighboring DGs at only event-triggered times are involved, which greatly reduces the communication burden of the DC microgrid communication network. The stability of the proposed method is demonstrated through the Lyapunov function, and Zeno behavior can be excluded as well. Finally, the experimental results with four case studies are presented to validate the effectiveness of the proposed method.

About Me

Hui Wang received the B.S. degree in automation, the M.S. degree in electrical engineering, and the Ph.D. degree in control science and engineering from Central South University, Changsha, China, in 2008, 2011, and 2014, respectively. Since 2016, he has been with the School of Automation, Central South University. His research interests include matrix converters, DC/DC converters, and solid-state transformers. Xiang Yan received the B.S. degree in electrical engineering and automation from Beijing Technology and Business University, Beijing, China, in 2023. She is currently pursuing the M.S. degree in electrical engineering with Central South University, Changsha, China. Her research interests include matrix converter and solid-state transformer. Xiaochao Hou received his B.S., M.S., and Ph.D. degrees from Central South University, Changsha, China, in 2014, 2017, and 2020, respectively. He is currently an associate professor with the School of Automation, Central South University, China. His research interests include renewable energy systems, distributed micro-grids, and power-electronic-enabled power networks.

Dr. Xiaochao Hou

Dr. Xiaochao Hou

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