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公开(公告)号：US09229468B2
公开(公告)日：2016-01-05
申请号：US14055314
申请日：2013-10-16
申请人： ABB Oy
发明人： Tuomas Pulli , Janne Hellberg
摘要： A method and an arrangement of tracking a selected (e.g., maximum) power point of a photovoltaic system is disclosed, in which method an operation point of the photovoltaic system is changed based on the change of operation point and a change of power generated by the photovoltaic system. The method can include repeatedly determining a current or voltage of the photovoltaic system, determining a power of the photovoltaic system, determining a change of power of the photovoltaic system with respect to a previous determined power, and changing the operation point of the photovoltaic system by changing a current or voltage reference of the system stepwise depending on the change of power and a direction of a previous change of the current or voltage reference.
摘要翻译： 公开了一种跟踪光伏系统的选定（例如，最大）功率点的方法和装置，其中光伏系统的操作点基于操作点的改变和由 光伏系统。 该方法可以包括重复地确定光伏系统的电流或电压，确定光伏系统的功率，确定光伏系统相对于先前确定的功率的功率变化，以及通过以下方式改变光伏系统的工作点 根据功率的变化和电流或电压基准的先前变化的方向逐步改变系统的电流或电压基准。
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公开(公告)号：US20140103729A1
公开(公告)日：2014-04-17
申请号：US14054889
申请日：2013-10-16
申请人： ABB Oy
发明人： Jari UUSIMÄKI , Jarkko Hyttinen , Janne Hellberg
IPC分类号： H02J1/10
CPC分类号： H02J1/102 , H02J3/385 , Y02E10/58 , Y10T307/729
摘要： A method of optimizing one or more starting parameters of a solar power generator system and a solar power generator system, wherein the solar power generator system includes a solar panel array and a converter for converting power obtained from the panel array. The method can include measuring an output voltage of the panel array, comparing the output voltage with a starting voltage (Vdc), starting the solar power generator system when the output voltage of the panel array exceeds the starting voltage (Vdc), measuring the obtained power from the solar panel array after a morning start, comparing the obtained power with a known limit value, and changing the one or more starting parameters on the basis of the comparison of power.
摘要翻译： 一种优化太阳能发电机系统和太阳能发电系统的一个或多个启动参数的方法，其中所述太阳能发电系统包括太阳能电池板阵列和用于转换从面板阵列获得的功率的转换器。 该方法可以包括测量面板阵列的输出电压，将输出电压与启动电压（Vdc）进行比较，当面板阵列的输出电压超过启动电压（Vdc）时启动太阳能发电系统，测量所获得的 在早晨开始之后从太阳能电池板阵列供电，将所获得的功率与已知极限值进行比较，并且基于功率比较来改变一个或多个启动参数。
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公开(公告)号：US09843185B2
公开(公告)日：2017-12-12
申请号：US14054889
申请日：2013-10-16
申请人： ABB Oy
发明人： Jari Uusimäki , Jarkko Hyttinen , Janne Hellberg
CPC分类号： H02J1/102 , H02J3/385 , Y02E10/58 , Y10T307/729
摘要： A method of optimizing one or more starting parameters of a solar power generator system and a solar power generator system, wherein the solar power generator system includes a solar panel array and a converter for converting power obtained from the panel array. The method can include measuring an output voltage of the panel array, comparing the output voltage with a starting voltage (Vdc), starting the solar power generator system when the output voltage of the panel array exceeds the starting voltage (Vdc), measuring the obtained power from the solar panel array after a morning start, comparing the obtained power with a known limit value, and changing the one or more starting parameters on the basis of the comparison of power.
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公开(公告)号：US20130321021A1
公开(公告)日：2013-12-05
申请号：US13897858
申请日：2013-05-20
申请人： ABB Oy
发明人： Jesse KOKKONEN , Janne Hellberg , Jari Uusimäki
IPC分类号： G01R31/26
CPC分类号： G01R31/2607 , H02J3/383 , H02M1/36 , H02S50/10 , Y02E10/563
摘要： A method and arrangement of determining starting conditions of a solar converter in a photovoltaic system. The photovoltaic system includes a photovoltaic panel system having one or more photovoltaic panels. The method includes determining an open circuit voltage of the photovoltaic panel system, and determining beforehand limit values for the starting conditions, where the limit values include an open circuit voltage value and a temperature value, with which values the solar converter can be started. The method also includes determining beforehand the temperature dependency of the open circuit voltage of the panel system, determining a temperature of the panel system, and setting a criterion for starting the converter. The criterion includes determining, by using the determined temperature dependency and the determined limit values for the starting conditions, whether the determined temperature and the determined open circuit voltage enable the starting of the converter.
摘要翻译： 一种在光伏系统中确定太阳能转换器起动条件的方法和装置。 光伏系统包括具有一个或多个光伏面板的光伏面板系统。 该方法包括确定光伏面板系统的开路电压，并且确定起始条件的预先极限值，其中极限值包括开路电压值和温度值，太阳能转换器可以通过该开路电压值和温度值开始。 该方法还包括事先确定面板系统的开路电压的温度依赖性，确定面板系统的温度，以及设定启动转换器的标准。 该标准包括通过使用所确定的温度依赖性和确定的启动条件的限制值来确定所确定的温度和所确定的开路电压是否能够启动转换器。
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公开(公告)号：US09494637B2
公开(公告)日：2016-11-15
申请号：US14049751
申请日：2013-10-09
申请人： ABB Oy
发明人： Janne Hellberg , Kimmo Heinonen , Jari Uusimäki
CPC分类号： G01R31/28 , H02J3/381 , H02J2003/388
摘要： A method and an arrangement are disclosed for detecting islanding operation of a distributed power generator. The method can include determining a frequency of a grid to which the distributed power generator is connected, measuring a rate of change of the frequency of the grid at an output of the distributed power generator, determining a threshold value for an alteration speed, comparing the rate of change of the frequency of the grid with the threshold value, and detecting islanding operation when the measured rate of change of the frequency exceeds the threshold value for a certain time period.
摘要翻译： 公开了一种用于检测分布式发电机的孤岛运行的方法和装置。 该方法可以包括确定分布式发电机连接到的电网的频率，测量在分布式发电机的输出处的电网频率的变化率，确定改变速度的阈值， 电网频率随阈值变化的速率，以及当所测量的频率变化率超过阈值一定时间段时检测孤岛作业。
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公开(公告)号：US09063194B2
公开(公告)日：2015-06-23
申请号：US13897858
申请日：2013-05-20
申请人： ABB Oy
发明人： Jesse Kokkonen , Janne Hellberg , Jari Uusimäki
CPC分类号： G01R31/2607 , H02J3/383 , H02M1/36 , H02S50/10 , Y02E10/563
摘要： A method and arrangement of determining starting conditions of a solar converter in a photovoltaic system. The photovoltaic system includes a photovoltaic panel system having one or more photovoltaic panels. The method includes determining an open circuit voltage of the photovoltaic panel system, and determining beforehand limit values for the starting conditions, where the limit values include an open circuit voltage value and a temperature value, with which values the solar converter can be started. The method also includes determining beforehand the temperature dependency of the open circuit voltage of the panel system, determining a temperature of the panel system, and setting a criterion for starting the converter. The criterion includes determining, by using the determined temperature dependency and the determined limit values for the starting conditions, whether the determined temperature and the determined open circuit voltage enable the starting of the converter.
摘要翻译： 一种在光伏系统中确定太阳能转换器起动条件的方法和装置。 光伏系统包括具有一个或多个光伏面板的光伏面板系统。 该方法包括确定光伏面板系统的开路电压，并且确定起始条件的预先极限值，其中极限值包括开路电压值和温度值，太阳能转换器可以通过该开路电压值和温度值开始。 该方法还包括事先确定面板系统的开路电压的温度依赖性，确定面板系统的温度，以及设定启动转换器的标准。 该标准包括通过使用所确定的温度依赖性和确定的启动条件的限制值来确定所确定的温度和所确定的开路电压是否能够启动转换器。
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