Method for detecting input channel configuration of multi-channel inverter

文档序号:1382784 发布日期:2020-08-14 浏览:10次 中文

阅读说明:本技术 检测多通道逆变器的输入通道配置的方法 (Method for detecting input channel configuration of multi-channel inverter ) 是由 S·斯卡勒缇 A·格里罗 于 2018-12-21 设计创作,主要内容包括:一种用于检测具有多个输入通道的多通道逆变器(100)的输入通道配置的方法(1)。每个输入通道与对应的功率转换器电连接,并且在所述多通道逆变器的可操作安装后与DC电源可操作地相关联。该方法包括以下步骤:-在输入通道中选择参考输入通道;-控制功率转换器,以允许高于电流阈值的输入电流沿着所述参考输入通道流动,并且允许低于所述电流阈值的输入电流沿着与所述参考输入通道不同的一个或多个剩余输入通道流动;-获取指示所述输入通道的输入电压的检测数据(D);-在所述输入通道的输入电压之间执行比较;-执行确定过程(DP),以基于所述剩余输入通道的输入电压相对于所述参考通道的输入电压的行为来确定所述输入通道的配置状态。(A method (1) for detecting an input channel configuration of a multi-channel inverter (100) having a plurality of input channels. Each input channel is electrically connected with a corresponding power converter and is operatively associated with a DC power source upon operative installation of the multi-channel inverter. The method comprises the following steps: -selecting a reference input channel among the input channels; -controlling the power converter to allow an input current above a current threshold to flow along the reference input channel and to allow an input current below the current threshold to flow along one or more remaining input channels different from the reference input channel; -acquiring detection data (D) indicative of an input voltage of the input channel; -performing a comparison between the input voltages of the input channels; -performing a Determination Process (DP) to determine a configuration state of the input channel based on a behavior of the input voltage of the remaining input channel with respect to the input voltage of the reference channel.)

1. A method (1) for detecting an input channel configuration of a multi-channel inverter (100), the multi-channel inverter (100) having a plurality of input Channels (CH)1、CH2、CHi-1、CHi、CHN-1、CHN) Each input channel being associated with a corresponding power converter (C)1、C2、Ci-1、Ci、CN-1、CN) Is electrically connected to and operably installed with a DC power source (S)1、S2、Si-1、Si、SN-1、SN) Operatively associated, characterized in that said method comprises the steps of:

a) selecting a reference input channel among the input channels;

b) controlling the power converter to allow input current above a current threshold to flow along the reference input channel and to allow input current below the current threshold to flow along one or more remaining input channels different from the reference input channel;

c) obtaining an input voltage (V) indicative of the input channel1、V2、Vi-1、Vi、VN-1、VN) The detection data (D) of (1);

d) performing a comparison between input voltages of the input channels;

e) performing a Determination Process (DP) to determine a configuration state of the input channels based on behavior of input voltages of the remaining input channels relative to input voltages of the reference channels.

2. The method of claim 1, wherein the step b) of controlling the power converter comprises activating a power converter corresponding to the reference input channel and deactivating or maintaining deactivation of power converters corresponding to the remaining input channels.

3. Method according to one or more of the previous claims, wherein said step d) of performing a comparison between the input voltages of said input channels comprises checking whether the input voltages of said remaining input channels behave like the input voltage of said reference input channel.

4. A method according to claim 3, characterized in that said Determination Procedure (DP) comprises the steps of:

e.1) determining the reference input channel as an independent input channel if the input voltage of the remaining input channel is not reduced as much as the input voltage at the reference input channel.

5. The method of claim 4, wherein the determining process further comprises the steps of:

e.2) if there is a single remaining input channel, determining the remaining input channel to be an independent input channel; or

e.3) if there are a plurality of remaining input channels, repeating said steps a), b), c), d), e) for said remaining input channels.

6. A method according to claim 3, characterized in that said Determination Procedure (DP) comprises the steps of:

e.4) determining that the reference input channel and the one or more first remaining input channels are parallel input channels if the input voltage of the one or more first remaining input channels decreases as the input voltage at the reference input channel.

7. Method according to claim 6, wherein said Determining Process (DP) comprises the following steps if the input voltage of one or more second remaining input channels different from said first remaining input channel is not reduced as much as the input voltage of said reference input channel:

e.5) if the second remaining channel comprises a single second remaining input channel, determining the remaining input channel to be an independent input channel; or

e.6) if the second remaining channel comprises a plurality of second remaining input channels, repeating the steps a), b), c), d), e) for the second remaining input channels.

8. A method according to one or more of the preceding claims, characterized in that it comprises a step f) of storing configuration information (I) indicative of the configuration state determined for said input channel.

9. A multi-channel inverter (100) electrically connectable to a DC power system (200) and an AC power system (300), characterized in that the multi-channel inverter (100) comprises data processing resources (160) configured to perform the method (1) according to one or more of the preceding claims.

10. The multi-channel inverter of claim 9, comprising a control component (140) to control the operation of the photovoltaic inverter, the control component comprising data processing resources (160) configured to perform the method (1) of one or more of claims 1 to 8.

11. A multi-channel inverter as claimed in one of claims 9 to 10, characterized in that the multi-channel inverter is a photovoltaic inverter.

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