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1.发明申请公开(公告)号：US20130197834A1
公开(公告)日：2013-08-01
申请号：US13738480
申请日：2013-01-10
Applicant: ABB Oy
Inventor： Anssi MÄKI , Seppo Valkealahti
Abstract: A method and an arrangement are provided in connection with a photovoltaic power generator composed of series-connected photovoltaic modules. The method includes determining a maximum power point voltage (UMPP) and a maximum power point current (IMPP). The method also includes determining the ambient temperature (Tamb), calculating an estimated maximum power point voltage (Uest) by using maximum power point current (IMPP) and the determined ambient temperature (Tamb), comparing the estimated maximum power point voltage with the determined maximum power point (UMPP), and determining on the basis of the comparison whether the generator is operating under uniform conditions or in conditions with two maximum power points.
Abstract translation: 结合由串联连接的光伏模块组成的光伏发电机组提供了一种方法和装置。 该方法包括确定最大功率点电压（UMPP）和最大功率点电流（IMPP）。 该方法还包括通过使用最大功率点电流（IMPP）和所确定的环境温度（Tamb）来确定环境温度（Tamb），计算估计的最大功率点电压（Uest），将所估计的最大功率点电压与所确定的 最大功率点（UMPP），并根据比较来确定发电机是否在均匀条件下运行，或在两个最大功率点的条件下运行。
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公开(公告)号：US09625502B2
公开(公告)日：2017-04-18
申请号：US13738480
申请日：2013-01-10
Applicant: ABB Oy
Inventor： Anssi Mäki , Seppo Valkealahti
Abstract: A method and an arrangement are provided in connection with a photovoltaic power generator composed of series-connected photovoltaic modules. The method includes determining a maximum power point voltage (UMPP) and a maximum power point current (IMPP). The method also includes determining the ambient temperature (Tamb), calculating an estimated maximum power point voltage (Uest) by using maximum power point current (IMPP) and the determined ambient temperature (Tamb), comparing the estimated maximum power point voltage with the determined maximum power point (UMPP), and determining on the basis of the comparison whether the generator is operating under uniform conditions or in conditions with two maximum power points.
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