公开(公告)号：US09435845B2

公开(公告)日：2016-09-06

申请号：US14230423

申请日：2014-03-31

Applicant: SMA Solar Technology AG

Inventor： Johannes Lang ,  Thomas Wegener ,  Marcel Kratochvil ,  Holger Behrends ,  Michael Viotto

IPC: G01R31/02 ,  H02H9/08 ,  H01H9/50 ,  H01H33/26 ,  G01R31/333 ,  H02H1/00 ,  H01H83/20 ,  H02H7/20

CPC classification number: G01R31/025 ,  G01R31/333 ,  H01H9/50 ,  H01H33/26 ,  H01H83/20 ,  H02H1/0015 ,  H02H7/205

Abstract: The disclosure relates to a method for detecting an arc in a DC circuit. The method includes measuring and analyzing an AC component (IAC) of a current (I) flowing in the circuit and determining at least one parameter of the AC component (IAC). The level of a DC component (IDC) of the current (I) is varied and a degree of correlation between the level of the DC component (IDC) of the current (I) flowing in the DC circuit and the at least one parameter of the AC component (IAC) is determined. An arc is detected and selectively signaled based on the degree of the determined correlation. The disclosure also relates to an apparatus for carrying out the method and to an inverter comprising such an apparatus.

Abstract translation: 本公开涉及一种用于检测直流电路中的电弧的方法。 该方法包括测量和分析在电路中流动的电流（I）的AC分量（IAC）并确定AC分量（IAC）的至少一个参数。 电流（I）的DC分量（IDC）的电平变化，并且在直流电路中流动的电流（I）的直流分量（IDC）的电平与至少一个参数 AC分量（IAC）被确定。 基于所确定的相关度的程度来检测并选择性地发出电弧。 本公开还涉及一种用于执行该方法的装置以及包括这种装置的逆变器。

公开(公告)号：US20140210485A1

公开(公告)日：2014-07-31

申请号：US14230423

申请日：2014-03-31

Applicant: SMA Solar Technology AG

Inventor： Johannes Lang ,  Thomas Wegener ,  Marcel Kratochvil ,  Holger Behrends ,  Michael Viotto

IPC: G01R31/02

CPC classification number: G01R31/025 ,  G01R31/333 ,  H01H9/50 ,  H01H33/26 ,  H01H83/20 ,  H02H1/0015 ,  H02H7/205

Abstract: The disclosure relates to a method for detecting an arc in a DC circuit. The method includes measuring and analyzing an AC component (IAC) of a current (I) flowing in the circuit and determining at least one parameter of the AC component (IAC). The level of a DC component (IDC) of the current (I) is varied and a degree of correlation between the level of the DC component (IDC) of the current (I) flowing in the DC circuit and the at least one parameter of the AC component (IAC) is determined. An arc is detected and selectively signaled based on the degree of the determined correlation. The disclosure also relates to an apparatus for carrying out the method and to an inverter comprising such an apparatus.

Abstract translation: 本公开涉及一种用于检测直流电路中的电弧的方法。 该方法包括测量和分析在电路中流动的电流（I）的AC分量（IAC）并确定AC分量（IAC）的至少一个参数。 电流（I）的DC分量（IDC）的电平变化，并且在直流电路中流动的电流（I）的直流分量（IDC）的电平与至少一个参数 AC分量（IAC）被确定。 基于所确定的相关度的程度来检测并选择性地发出电弧。 本公开还涉及一种用于执行该方法的装置以及包括这种装置的逆变器。