Inverter anti-islanding method

Details Inverter anti-islanding method Inverter anti-islanding method

2006-04-07

2008-10-07

Jackson, Stephen W (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Condition responsive

C361S044000, C361S049000

Reexamination Certificate

active

07432618

ABSTRACT:
A method for detecting and interrupting an electrically islanded condition for a grid connected current source inverter is disclosed in which: A line voltage frequency is monitored at a cycle or sub cycle resolution. Current output from the inverter is periodically phase shifted. If voltage is observed to follow the phase shift of the current output an islanding error signal is generated causing the inverter to stop injecting power onto the line.

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