AnswerBun.com

How do multiple enphase microinverters stay synced to the grid?

Engineering Asked by TexasGEEK on August 3, 2020

In a prior question it was established that any string or microinverter that is grid tied must put out sinusodial power. But there is also the task of being in sync with the grid. It seems from apperances that task for a single string inverter is far simpler than for an arrary of 28 microinverters on a 10kwh solar system to stay in step with each other let alone the grid. I can only imagine the analog nightmare of trying to cue 28 phonographs to play the same lp in unison and with variations in drive components and lp pressings. So what is the microinverter problem and solution to this symphonic nightmare of phase variance?

One Answer

A baseline grid-tie inverter samples the line voltage and produces current that is in phase with it and proportional to the maximum power it can squeeze out of the source (typically photovoltaic). So it's actually the grid itself that the inverters are synchronizing to.

This can actually burden the grid with power it doesn't need, or make the job of regulating voltage at remote spots more difficult. This can have a direct impact on the stability of the power grid.

Do a search on "smart grid tie inverters" or "advanced grid tie inverters". There's a movement afoot in areas that are seeing a lot of alternative power sources to encourage or require power providers to have inverters that can be managed or otherwise be provisioned to be an assist to grid stability, rather than a burden.

Answered by TimWescott on August 3, 2020

Add your own answers!

Related Questions

Question about length of commercial augers

1  Asked on December 19, 2020 by guesty

 

Fixing a stepper motor by its shaft

1  Asked on December 18, 2020 by dvd280

   

How to query stress and strain values in a specific element in Abaqus?

1  Asked on December 14, 2020 by cindy-karina9

 

Calculating shaft diameter

2  Asked on December 14, 2020 by php_nub_qq

       

Ask a Question

Get help from others!

© 2022 AnswerBun.com. All rights reserved. Sites we Love: PCI Database, MenuIva, UKBizDB, Menu Kuliner, Sharing RPP, SolveDir