This study investigates the Maximum Power Point Tracking(MPPT)control method of offshore windphotovoltaic hybrid power generation system with offshore crane-assisted.A new algorithm of Global Fast Integral Sliding Mod...This study investigates the Maximum Power Point Tracking(MPPT)control method of offshore windphotovoltaic hybrid power generation system with offshore crane-assisted.A new algorithm of Global Fast Integral Sliding Mode Control(GFISMC)is proposed based on the tip speed ratio method and sliding mode control.The algorithm uses fast integral sliding mode surface and fuzzy fast switching control items to ensure that the offshore wind power generation system can track the maximum power point quickly and with low jitter.An offshore wind power generation system model is presented to verify the algorithm effect.An offshore off-grid wind-solar hybrid power generation systemis built in MATLAB/Simulink.Compared with other MPPT algorithms,this study has specific quantitative improvements in terms of convergence speed,tracking accuracy or computational efficiency.Finally,the improved algorithm is further analyzed and carried out by using Yuankuan Energy’s ModelingTech semi-physical simulation platform.The results verify the feasibility and effectiveness of the improved algorithm in the offshore wind-solar hybrid power generation system.展开更多
Based on the climate observation data of Kangding City in recent 60 years,the changing trends of temperature and humidity index and wind efficiency index in Kangding City are analyzed.The results show that the annual ...Based on the climate observation data of Kangding City in recent 60 years,the changing trends of temperature and humidity index and wind efficiency index in Kangding City are analyzed.The results show that the annual average temperature and humidity index and wind efficiency index of Kangding in recent 60 years showed an upward trend,which is consistent with global warming climate.Temperature and humidity index tended to change from the cold grade to the relatively cold and cool grades,and wind efficiency index changed from the slightly cold wind grade to the cool wind grade.Seen from temperature and humidity index and wind efficiency index,the climate was comfortable and relatively comfortable from May to September,which will become an important climatic reference to attract tourists.展开更多
This study utilizes meteorological station data from Mile City(1991-2020)to analyze the effects of temperature,humidity,and wind efficiency index on human thermal perception and heat dissipation.The results demonstrat...This study utilizes meteorological station data from Mile City(1991-2020)to analyze the effects of temperature,humidity,and wind efficiency index on human thermal perception and heat dissipation.The results demonstrate that Mile City offers year-round travel suitability with excellent climatic resources.April and October are particularly ideal for tourism due to synergistic interactions between temperature-humidity conditions and wind efficiency.January,February,March,May,and September also prove suitable for travel,as wind efficiency during winter months enhances comfort perception while transitional seasons optimize tourism experiences through coordinated temperature-humidity-WEI adjustments.Notably,March shows only a 1.3-point difference in wind efficiency index compared to the optimal travel month.For travelers planning June-August visits,light summer retreats are recommended as high temperatures and humidity may cause discomfort,though this remains within acceptable thresholds.The temporal distribution analysis of Mile City’s tourism climate comfort provides valuable insights for travel planning and supports sustainable development of the local tourism industry.展开更多
基金supported by the 2022 Sanya Science and Technology Innovation Project,China(No.2022KJCX03)the Sanya Science and Education Innovation Park,Wuhan University of Technology,China(Grant No.2022KF0028)the Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City,China(Grant No.2021JJLH0036).
文摘This study investigates the Maximum Power Point Tracking(MPPT)control method of offshore windphotovoltaic hybrid power generation system with offshore crane-assisted.A new algorithm of Global Fast Integral Sliding Mode Control(GFISMC)is proposed based on the tip speed ratio method and sliding mode control.The algorithm uses fast integral sliding mode surface and fuzzy fast switching control items to ensure that the offshore wind power generation system can track the maximum power point quickly and with low jitter.An offshore wind power generation system model is presented to verify the algorithm effect.An offshore off-grid wind-solar hybrid power generation systemis built in MATLAB/Simulink.Compared with other MPPT algorithms,this study has specific quantitative improvements in terms of convergence speed,tracking accuracy or computational efficiency.Finally,the improved algorithm is further analyzed and carried out by using Yuankuan Energy’s ModelingTech semi-physical simulation platform.The results verify the feasibility and effectiveness of the improved algorithm in the offshore wind-solar hybrid power generation system.
基金Supported by the Project of Education Department of Sichuan Province,China(16ZB0365)Project of Sichuan Minzu College(XYZB18041SB).
文摘Based on the climate observation data of Kangding City in recent 60 years,the changing trends of temperature and humidity index and wind efficiency index in Kangding City are analyzed.The results show that the annual average temperature and humidity index and wind efficiency index of Kangding in recent 60 years showed an upward trend,which is consistent with global warming climate.Temperature and humidity index tended to change from the cold grade to the relatively cold and cool grades,and wind efficiency index changed from the slightly cold wind grade to the cool wind grade.Seen from temperature and humidity index and wind efficiency index,the climate was comfortable and relatively comfortable from May to September,which will become an important climatic reference to attract tourists.
基金supported by the Innovation and Entrepreneurship Training Program for College Students in Yunnan Province,with the project title“Analysis of Tourism Development and Tourism Climate Resources in Mile City,Yunnan Province”.
文摘This study utilizes meteorological station data from Mile City(1991-2020)to analyze the effects of temperature,humidity,and wind efficiency index on human thermal perception and heat dissipation.The results demonstrate that Mile City offers year-round travel suitability with excellent climatic resources.April and October are particularly ideal for tourism due to synergistic interactions between temperature-humidity conditions and wind efficiency.January,February,March,May,and September also prove suitable for travel,as wind efficiency during winter months enhances comfort perception while transitional seasons optimize tourism experiences through coordinated temperature-humidity-WEI adjustments.Notably,March shows only a 1.3-point difference in wind efficiency index compared to the optimal travel month.For travelers planning June-August visits,light summer retreats are recommended as high temperatures and humidity may cause discomfort,though this remains within acceptable thresholds.The temporal distribution analysis of Mile City’s tourism climate comfort provides valuable insights for travel planning and supports sustainable development of the local tourism industry.
