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Battery energy storage system based on modular multilevel converter (MMC-BESS) has many advantages such as easy expansibility and high reliability. With multiple submodules (SM), the corresponding SM fault ride-through method is mandatory to reduce the construction redundancy and improve the operational reliability. This paper proposes a redistributed pulse width modulation (R-PWM) method for MMC-BESS...
With the decrease in the overall size and the rapid increase in the working frequencies of printed circuit boards, the reliability of solder joints, especially the high frequency signal transmission reliability has become the key factor in system reliability. In this paper, changes in RF impedance of solder joints in a temperature cycling environment was studied using time-domain reflectometry measurements...
development of future photonic integrated circuits has increased the demand for the miniaturization of photonic components. Optical interconnect technology has a few inherent advantages over traditional discrete devices, such as low power consumption. However, the technology has many problems to be solved, such as low coupling efficiency and low reliability. Furthermore, it hasn't been feasible roadmap...
In this paper, to completely meet the requirements of reliability design in the product designing, an axiom-based reliability design approach is proposed. In light of the axiomatic design principles, products are designed preliminarily to establish their functional requirements, so that according to these, functions preserving requirements are augmented, which constitute a functional requirement preserving...
The objective of the current study was to develop a Chinese version of the Responses to Stress Questionnaire (RSQ‐C) and to evaluate its reliability and validity. The original version of the RSQ was back‐translated into Chinese and administered to a sample of students recruited from two middle schools in Hunan, China. The final sample consisted of 1068 adolescents (49.9% males and 50.1% females)....
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