The </span><span style="font-family:""><span style="font-family:Verdana;">development of photovoltaics (PV)-powered vehicles are expected to contribute to reduce CO</span&...The </span><span style="font-family:""><span style="font-family:Verdana;">development of photovoltaics (PV)-powered vehicles are expected to contribute to reduce CO</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;"> emission of vehicles and create </span></span><span style="font-family:Verdana;">a </span><span style="font-family:Verdana;">clean energy society. This paper presents </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">impact of high-efficiency solar cell modules on reduction in CO</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;"> emission, charging cost reduction for electric vehicles</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> and reducing storage capacity of PV-powered electric vehicles. In this paper, </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">effects of solar cell module efficiency upon driving distance of PV-powered vehicles are also shown. Especially, </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">potential of Si tandem solar cells for PV-powered vehicle application</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> is discussed. This paper presents that the III-V/Si 3-junction solar cell modules with an efficiency of more than 37% have </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">potential of longer driving distance of 30 km/day average and more than 50 km/day on a clear day compared to </span><span style="font-family:Verdana;">an </span><span style="font-family:Verdana;">average 16 km/day driving by vehicles powered by 20% efficiency Si solar cell modules.展开更多
Many papers exploiting the various MPPT （maximum power point tracking） techniques in PV （photovoltaic） applications, from the simple to the most complicated, can be found in literature. However, these techniques m...Many papers exploiting the various MPPT （maximum power point tracking） techniques in PV （photovoltaic） applications, from the simple to the most complicated, can be found in literature. However, these techniques may not always be easy to implement in industrial applications. The main challenge of this paper is to model and implement the P ＆ O （perturb and observe） algorithm in a low-cost PV-powered pumping system. To that end, a comparative investigation of the performance characteristics of the most popular MPPT methods, such as FOCV （fractional open circuit voltage）, FSCC （fractional short circuit current）, FLC （fuzzy logic control）, ANN （artificial neural network） and INC （incremental conductance） is presented. This analysis is helpful to highlight the relevance of the P ＆ O technique taking better account of complexity, difficulty of implementation and cost considerations in water pumping applications. The targeted PV-powered pumping system is based on a single-phase induction motor supplied by a three-phase inverter controlled by the DTC （direct torque control） technique. This stand-alone PV system is dedicated to water pumping, especially in rural areas that have no access to national grids but have sufficient amount of solar radiation. Simulation modeling （Matlab/Simulink） and experimental results are presented to demonstrate the relevance of the system.展开更多
研究了并网光伏电站动态数学建模与稳定性问题。首先,在考虑电站不同功率控制方式(比如最大功率跟踪控制、定功率控制等)的基础上,建立了可用于电力系统稳定性分析的并网光伏电站的动态数学模型。该模型用微分和代数方程组来描述,便于...研究了并网光伏电站动态数学建模与稳定性问题。首先,在考虑电站不同功率控制方式(比如最大功率跟踪控制、定功率控制等)的基础上,建立了可用于电力系统稳定性分析的并网光伏电站的动态数学模型。该模型用微分和代数方程组来描述,便于与表征电力系统动态行为的微分和代数方程组联立求解系统稳定性等动态问题。其次,提出了并网光伏电站在最大功率跟踪(maximum power point tracking,MPPT)控制方式和定功率控制(constant power control,CPC)方式下的系统稳定性判据,该判据仅由光伏阵列出口测量的电压和功率数据即可充分判断光伏电站系统的稳定性,为实施稳定性检测和控制提供了理论依据。最后以济南市某1.6 MW并网光伏电站为算例,验证了所建光伏电站动态模型和所提出的稳定性判据的正确性和可行性。展开更多
由于太阳能自身的间歇性和不稳定性,提高太阳能发电并网的质量成为近年来的研究热点。太阳能光伏‒光热(photovoltaic/concentrated solar power,PV-CSP)复合发电技术作为一种新兴技术,相比于单独的太阳能光伏(PV)和太阳能热(CSP)发电技...由于太阳能自身的间歇性和不稳定性,提高太阳能发电并网的质量成为近年来的研究热点。太阳能光伏‒光热(photovoltaic/concentrated solar power,PV-CSP)复合发电技术作为一种新兴技术,相比于单独的太阳能光伏(PV)和太阳能热(CSP)发电技术具有诸多优势,目前已有多种技术形式实现了商业化。介绍了PV、CSP发电技术及PV-CSP复合发电技术,通过一些典型商业化PV-CSP复合电站的建设及运行情况,分析了当今商业化PV-CSP复合电站的应用现状,并综述了近年来对PV-CSP复合发电系统的技术和经济性研究情况。展开更多
文摘The </span><span style="font-family:""><span style="font-family:Verdana;">development of photovoltaics (PV)-powered vehicles are expected to contribute to reduce CO</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;"> emission of vehicles and create </span></span><span style="font-family:Verdana;">a </span><span style="font-family:Verdana;">clean energy society. This paper presents </span><span style="font-family:Verdana;">the </span><span style="font-family:""><span style="font-family:Verdana;">impact of high-efficiency solar cell modules on reduction in CO</span><sub><span style="font-family:Verdana;">2</span></sub><span style="font-family:Verdana;"> emission, charging cost reduction for electric vehicles</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> and reducing storage capacity of PV-powered electric vehicles. In this paper, </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">effects of solar cell module efficiency upon driving distance of PV-powered vehicles are also shown. Especially, </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">potential of Si tandem solar cells for PV-powered vehicle application</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> is discussed. This paper presents that the III-V/Si 3-junction solar cell modules with an efficiency of more than 37% have </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">potential of longer driving distance of 30 km/day average and more than 50 km/day on a clear day compared to </span><span style="font-family:Verdana;">an </span><span style="font-family:Verdana;">average 16 km/day driving by vehicles powered by 20% efficiency Si solar cell modules.
文摘Many papers exploiting the various MPPT （maximum power point tracking） techniques in PV （photovoltaic） applications, from the simple to the most complicated, can be found in literature. However, these techniques may not always be easy to implement in industrial applications. The main challenge of this paper is to model and implement the P ＆ O （perturb and observe） algorithm in a low-cost PV-powered pumping system. To that end, a comparative investigation of the performance characteristics of the most popular MPPT methods, such as FOCV （fractional open circuit voltage）, FSCC （fractional short circuit current）, FLC （fuzzy logic control）, ANN （artificial neural network） and INC （incremental conductance） is presented. This analysis is helpful to highlight the relevance of the P ＆ O technique taking better account of complexity, difficulty of implementation and cost considerations in water pumping applications. The targeted PV-powered pumping system is based on a single-phase induction motor supplied by a three-phase inverter controlled by the DTC （direct torque control） technique. This stand-alone PV system is dedicated to water pumping, especially in rural areas that have no access to national grids but have sufficient amount of solar radiation. Simulation modeling （Matlab/Simulink） and experimental results are presented to demonstrate the relevance of the system.
文摘研究了并网光伏电站动态数学建模与稳定性问题。首先,在考虑电站不同功率控制方式(比如最大功率跟踪控制、定功率控制等)的基础上,建立了可用于电力系统稳定性分析的并网光伏电站的动态数学模型。该模型用微分和代数方程组来描述,便于与表征电力系统动态行为的微分和代数方程组联立求解系统稳定性等动态问题。其次,提出了并网光伏电站在最大功率跟踪(maximum power point tracking,MPPT)控制方式和定功率控制(constant power control,CPC)方式下的系统稳定性判据,该判据仅由光伏阵列出口测量的电压和功率数据即可充分判断光伏电站系统的稳定性,为实施稳定性检测和控制提供了理论依据。最后以济南市某1.6 MW并网光伏电站为算例,验证了所建光伏电站动态模型和所提出的稳定性判据的正确性和可行性。
文摘由于太阳能自身的间歇性和不稳定性,提高太阳能发电并网的质量成为近年来的研究热点。太阳能光伏‒光热(photovoltaic/concentrated solar power,PV-CSP)复合发电技术作为一种新兴技术,相比于单独的太阳能光伏(PV)和太阳能热(CSP)发电技术具有诸多优势,目前已有多种技术形式实现了商业化。介绍了PV、CSP发电技术及PV-CSP复合发电技术,通过一些典型商业化PV-CSP复合电站的建设及运行情况,分析了当今商业化PV-CSP复合电站的应用现状,并综述了近年来对PV-CSP复合发电系统的技术和经济性研究情况。
