XJTLU undergraduate student published on Fault Diagnosis Method in smart grid systems

Mingkai Zheng, a year three undergraduate student in the Department of Electrical and Electronic Engineering (EEE) at Xi’an Jiaotong-Liverpool University, recently has recently published a SCI-indexed research paper as the first author about the Smart Grid system in an Institute of Electrical and Electronics Engineers (IEEE) journal, IEEE ACCESS.

Under the supervision of Dr Huiqing Wen, Mingkai Zheng’s paper titled “Open-Circuit Fault Diagnosis of Dual Active Bridge (DAB) DC-DC Converter with Extended-Phase-Shift Control” proposes a new and fast diagnosis strategy to increase the reliability for renewable energy production process, as the result of the Summer Undergraduate Research Fellowship (SURF) in last summer.

Below show the typical waveforms of the DAB converter when the open-circuit fault happens on specific devices. Proposed by the undergraduate student, the novel fault diagnosis strategy utilizes the distorted waveforms under different faults to quickly identify the position and specific devices of the failure without adding any hardware cost. With the quick development of Smart Grid systems, the proposed fault diagnosis method shows a bright application prospect for the reliability improvement of future power system.

Above: Typical waveforms of the DAB converter when the open-circuit fault happens on specific devices.

“It’s a good example to show the effectiveness of research-led education innovations, which is widely adopted at XJTLU,” said Dr. Wen, Mamgai’s supervisor for the SURF project. “The advantage of the research-led education is to break the step-by-step rhythm of the traditional education model through the customized education innovation for individual students, which can accelerate the speed of technological innovation and the process of talent growth.” “Of course, a good research environment, excellent research team, and continuous-developing supervising mode are also important factors for the success of this student.” Dr. Wen continued to emphasize.

Above: Huiqing Wen, Mingkai Zheng, Haochen Shi (left to right)

By Dr. Huiqing Wen