Browsing NTNU Open by Author "Zhang, Yun"
Now showing items 1-5 of 5
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A modelling methodology for the assessment of preventive maintenance on a compressor drive system
Zhang, Yun; Barros, Anne; Rauzy, Antoine; Lunde, Erling (Chapter, 2018)Huge rotary machines are commonly used in oil and gas processing plants for separation, compression and boosting. Their reliability is of high importance to avoid operation downtime and production loss. In this paper, we ... -
Assessment of a condition-based maintenance policy for Subsea systems: A preliminary study
Zhang, Yun; Barros, Anne Cecile Pénélope; Rauzy, Antoine (Chapter, 2017)Subsea systems are prone to degradations and failures because they are located in a harsh environment. Their performance can be improved by implementing good maintenance policies, for instance condition based maintenance ... -
Condition-Based Maintenance Models: Application to Subsea Safety Systems
Zhang, Yun (Doctoral theses at NTNU;2018:375, Doctoral thesis, 2018)This PhD thesis clarifies concepts and challenges in maintenance modelling for subsea systems. The main objective is to develop suitable condition-based maintenance (CBM) models for some typical safety systems in subsea. ... -
An Input-Voltage-Sharing Control Strategy of Input-Series Output-Parallel Isolated Bidirectional DC/DC Converter for DC Distribution Network
Wang, Yu; Guan, Yuanpeng; Fosso, Olav B; Molinas Cabrera, Maria Marta; Chen, Si-Zhe; Zhang, Yun (Peer reviewed; Journal article, 2021)Input-series-output-parallel (ISOP) isolated bidirectional direct current (dc)/dc converter (IBdc) becomes a preferred scheme connecting high-voltage and low-voltage bus in dc distribution network. Input-voltage-sharing ... -
Wiener and Gamma Processes Overview for Degradation Modelling and Prognostic
Zhang, Yun (Master thesis, 2015)High reliability is an indispensable requirement for the operation of technical systems and infrastructure (like roads, railways, buildings, bridges and industrial plants). Failures in these areas can result in high costs ...