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| 1 | A Modular DC/DC Photovoltic Generation System for HVDC Grid Connection显示文摘A modular DC/DC conversion system with distributed MPPT and centralized step-up converter for photovoltaic energy integrated into HVDC grids is proposed in this paper.The conversion system consists of two power stages,with MPPT converter as the first stage and a step-up converter as the second stage.Both stages are modular structures.For the distributed MPPT stage,interleaved boost topology is utilized to effectively reduce the input and output ripples without adding extra components.For the centralized step-up stage,narrow-switching-frequency-variation LLC topology is employed,with the modules being configured as input-parallel-output-series structure.Full-range soft-switching property is achieved in the LLC stage to minimize switching losses.Theoretical analysis is carried out for the system voltage gain and design principles.Simulation and experimental results of a 3kW prototype system are presented to verify the theoretical analysis of the proposed system. | Guoen Cao Kai Sun Siyue Jiang Shilei Lu Yibo Wang | 2018 | Chinese Journal of Electrical Engineering2018，4，2： | 5 |
| 2 | Fabrication of Au/PVP by eleetrospinning nanofiber composites by elec- trospinning显示文摘 | Wang Yongzhi Li Yaoxian Sun Guoen | 2007 | J Appl Polym Sci2007，105，6： | 1 |
| 3 | Study on new extraction technology and chemical composition of litsea cubebaessential oil显示文摘 | YANG Guoen WANG Guiwu LI Xiangzhou | | The Open Mate0，，： | 1 |
| 4 | Study on new extraction technology and chemical composition of lit- sea cubeba essemial oil 显示文摘 | Yang Guoen Wang Guiwu Li Xiangzhou | 2011 | The Open Materials Science Journal2011，5，： | 1 |
| 5 | Clinical Analysis of GPT Alteration of Constructors for Qinghai-Tibetan Railroad at Different Altitude Areas显示文摘Objective: To observe the effect of hypoxia on the liver function of constructors at high altitude. Method: Select 221 constructors aged 23~42 as subjects, who had worked for 3~6 months at 4500 m. Collect venous blood from fasting subjects and determine GPT by new Lai’s Method from “The Nationwide Clinical Inspection Operating Rules'. Results: The study indicated that the GPT of 45 subjects among Group 1 were abnormal, with the proportion of 20.3%. The peak of GPT appeared when subjects exposed to high altitude of 4500m for 1 month, and the mean value was 83.76±9.23.The GPT of workers were higher than that of administers at different altitude (p<0.05). And the GPT of subjects at 4500 m were higher than those at 3500 m (p<0.05). We can find a degrading tendency with the increasing of working time (p<0.05). There was significantly statistic difference between two groups. Conclusions: The study confirmed that hypoxia could cause the change of liver function mildly and moderately. And there was a positive correlation between the degree of hypoxia and liver function. But, the change began to become a decreasing trend when people went on working longer. We also found that the change of liver structure and function at high altitude correlated with several factors else, including labor, individual difference, methods and sensitivity to the test. However, the explanation of its key mechanism deserves further investigation. | Peng Quansheng Yuan Zhengcai Wang Zhengjiang Wu Zhiling Zhang Xinxia Ge Rili Jin Guoen Hu Ying | 2006 | 工程科学(英文版)2006，4，2： | 0 |
| 6 | Lego architecture:Research on a temporary building design method for post-disaster emergency显示文摘Disasters are becoming the norm in this world,which also poses challenges to architects.Many needs to build temporary buildings may occur at the same time randomly around all over the world.Constructing an efficient and economical solution is the motivation of this research.Through a comprehensive review of all past related researches and architectural practices,“convenience”and“recyclability”have been identified as two important features of temporary buildings in the post-pandemic era.In this article,we carry on a novel research of discrete architecture.Based on the design paradigm of discrete architecture,this research uses the three main components of S/U/P to develop a Lego Architecture design method by combining with the Grasshopper plug-in under the Rhino platform to write a program that automatically generates the target plan.Then,a typical design scheme for physical construction verification and structural optimization is selected to ensure landing and safety.Originating from the thinking of productization,this research attempts to package the design methods and related knowledge into a systematic solution,relying on an open construction system framework to achieve a rapid,simple and safe construction of temporary buildings after disasters. | Daoyuan Chen Guoen Wang Guojun Chen | 2021 | Frontiers of Architectural Research2021，10，4： | 0 |
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