What happens to input power when inverter switched off?

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  • #1
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In a PV system, what happens to input power when an inverter is switched off?

I noticed that voltage does not change much but the current does. Does this mean the resistance increases?
 

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  • #2
davenn
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says said:
What happens to input power when inverter switched off?
define that question clearer .... switched off .... where ?
before or after the input ?
what sort of inverter ?


then this Q may be answered better
I noticed that voltage does not change much but the current does. Does this mean the resistance increases?

Dave
 
  • #3
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After the input power. So the sun is still shining on the PV panel, but the inverter is switched off.
I don't know much about inverters to answer your last question, sorry.
 
  • #4
anorlunda
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If you disconnect a PV panel from its load, no power is produced. Power P is voltage times current, ##P=VI##. Therefore if ##I=0## then ##P=0##.regardless of ##V##.

If you wish, you can view an ideal switch as a device that changes resistance from ##R=0## when closed to ##R=\##infinity when open.

Does an inverter really disconnect from its source when off? I'm not sure about that.
 

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