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1.发明公开METHOD AND DEVICE FOR SWITCHING OPERATION MODE OF A FIVE-LEVEL INVERTER 审中-公开VERFAHREN UND VORRICHTUNG ZUM SCHALTEN DES BETRIEBSMODUS EINESFÜNFSTUFIGENUMRICHTERS
公开(公告)号：EP3035509A2
公开(公告)日：2016-06-22
申请号：EP15193952.7
申请日：2015-11-10
发明人： Ding, Jie , Zou, Haiyan , Tao, Lei , Xu, Taotao , Zhang, Cheng
IPC分类号： H02M1/00
摘要： A method for switching an operation mode of a five-level inverter and a device for switching an operation mode of a five-level inverter are provided. The method includes: determining a first three-level operation mode as a three-level operation mode of the five-level inverter to be switched to from a five-level operation mode in a case that a PV input voltage is higher than a bridge line-line voltage command value of the five-level inverter required when the five-level inverter is connected to a power grid; switching, after the operation mode of the five-level inverter is switched to the first three-level operation mode, the operation mode of the five-level inverter from the first three-level operation mode to a second three-level operation mode, in a case that a junction temperature of a switching device operating in the first three-level operation mode exceeds a first preset value; and switching the operation mode of the five-level inverter from the second three-level operation mode to the first three-level operation mode in a case that the junction temperature of a switching device operating in the second three-level operation mode exceeds a second preset value. According to the provided method, the junction temperature of a switching device still operating after the operation mode of the five-level inverter is switched from the five-level operation mode to the three-level operation mode is reduced.
摘要翻译： 提供一种用于切换五电平逆变器的操作模式的方法和用于切换五电平逆变器的操作模式的装置。 该方法包括：在PV输入电压高于桥接线路的情况下，确定作为从五电平操作模式切换到的五电平逆变器的三电平运行模式的第一三电平运行模式 五电平逆变器连接到电网时要求的五电平逆变器的线路电压指令值; 在五电平逆变器的操作模式切换到第一三电平操作模式之后，将五电平逆变器的操作模式从第一三电平操作模式切换到第二三电平操作模式，在 在第一三电平操作模式下工作的开关装置的结温超过第一预设值的情况; 在第二三电平运行模式下工作的开关装置的结温超过第二三电平运行模式的情况下，将五电平逆变器的动作模式从第二三电平动作模式切换到第一三电平动作模式 预设值。 根据所提供的方法，在五电平逆变器的操作模式之后仍然工作的开关装置的结温从五电平操作模式切换到三电平操作模式减少。
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2.发明公开METHOD AND DEVICE FOR MODULATING A FIVE-LEVEL INVERTER, AND PHOTOVOLTAIC SYSTEM 审中-公开VERFAHREN UND VORRICHTUNG ZUR MODULIERUNG EINESFÜNFSTUFIGENUMRICHTERS UND FOTOVOLTAIKSYSTEM
公开(公告)号：EP3035510A3
公开(公告)日：2016-08-03
申请号：EP15193963.4
申请日：2015-11-10
发明人： Ding, Jie , Zou, Haiyan , Tao, Lei , Xu, Taotao , Zhang, Cheng
IPC分类号： H02M1/00 , H02M7/487 , H02M7/5395 , H02M1/12 , H02M3/00
摘要： A method for modulating a five-level inverter, a device for modulating a five-level inverter, and a photovoltaic system are provided. The method includes: acquiring a voltage command value Vcmd of a phase bridge of the five-level inverter; controlling a first switching device and a fourth switching device to be switched on alternately in a case that Vcmd≥V1Pos+Vthrs1; controlling the first switching device and a third switching device to be switched on alternately in a case that V1Pos-Vthrs2≤Vcmd
摘要翻译： 提供一种用于调制五电平逆变器的方法，用于调制五电平逆变器的装置和光伏系统。 该方法包括：获取五电平逆变器的相桥的电压指令值Vcmd; 在Vcmd‰¥V1Pos + Vthrs1的情况下，控制第一开关装置和第四开关装置交替接通; 在V1Pos-Vthrs2‰Vcmd
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3.发明公开
公开(公告)号：EP3035509A3
公开(公告)日：2016-08-03
申请号：EP15193952.7
申请日：2015-11-10
发明人： Ding, Jie , Zou, Haiyan , Tao, Lei , Xu, Taotao , Zhang, Cheng
摘要： A method for switching an operation mode of a five-level inverter and a device for switching an operation mode of a five-level inverter are provided. The method includes: determining a first three-level operation mode as a three-level operation mode of the five-level inverter to be switched to from a five-level operation mode in a case that a PV input voltage is higher than a bridge line-line voltage command value of the five-level inverter required when the five-level inverter is connected to a power grid; switching, after the operation mode of the five-level inverter is switched to the first three-level operation mode, the operation mode of the five-level inverter from the first three-level operation mode to a second three-level operation mode, in a case that a junction temperature of a switching device operating in the first three-level operation mode exceeds a first preset value; and switching the operation mode of the five-level inverter from the second three-level operation mode to the first three-level operation mode in a case that the junction temperature of a switching device operating in the second three-level operation mode exceeds a second preset value. According to the provided method, the junction temperature of a switching device still operating after the operation mode of the five-level inverter is switched from the five-level operation mode to the three-level operation mode is reduced.
摘要翻译： 提供了用于切换五电平逆变器的操作模式的方法和用于切换五电平逆变器的操作模式的装置。 该方法包括：在PV输入电压高于桥接线的情况下，将第一三电平操作模式确定为要从五电平操作模式切换到的五电平逆变器的三电平操作模式 五电平逆变器接入电网时所需的五电平逆变器的在线电压指令值; 在五电平逆变器的操作模式切换到第一三电平操作模式之后，将五电平逆变器的操作模式从第一三电平操作模式切换到第二三电平操作模式， 在第一三级操作模式下操作的开关装置的结温超过第一预设值的情况; 以及在第二三电平操作模式中操作的开关装置的结温超过第二三电平操作模式的结温的情况下，将五电平逆变器的操作模式从第二三电平操作模式切换到第一三电平操作模式 预设值。 根据所提供的方法，在五电平逆变器的操作模式从五电平操作模式切换到三电平操作模式之后，仍然工作的开关器件的结温降低。
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4.发明公开METHOD AND DEVICE FOR MODULATING A FIVE-LEVEL INVERTER, AND PHOTOVOLTAIC SYSTEM 审中-公开用于调节五电平逆变器的方法和装置以及光伏系统
公开(公告)号：EP3035510A2
公开(公告)日：2016-06-22
申请号：EP15193963.4
申请日：2015-11-10
发明人： Ding, Jie , Zou, Haiyan , Tao, Lei , Xu, Taotao , Zhang, Cheng
IPC分类号： H02M1/00
摘要： A method for modulating a five-level inverter, a device for modulating a five-level inverter, and a photovoltaic system are provided. The method includes: acquiring a voltage command value Vcmd of a phase bridge of the five-level inverter; controlling a first switching device and a fourth switching device to be switched on alternately in a case that Vcmd≥V1Pos+Vthrs1; controlling the first switching device and a third switching device to be switched on alternately in a case that V1Pos-Vthrs2≤Vcmd
摘要翻译： 提供了一种用于调制五电平逆变器的方法，用于调制五电平逆变器的装置以及光电系统。 该方法包括：获取五电平逆变器的相桥的电压指令值Vcmd; 在Vcmd≥V1Pos+ Vthrs1的情况下，控制第一开关器件和第四开关器件交替导通; 在V1Pos-Vthrs2≤Vcmd
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