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Energy-2: Solar Panels With Attached Micro-Inverters
Views: 441
Nov 14 2011 12:00 AM | eds in Ed's Articles
Quote
Micro-Inverters can be bolted to the racking
. . . under each of an installation’s solar panel
. . . to convert DC power into AC for each panel individually.
. . . under each of an installation’s solar panel
. . . to convert DC power into AC for each panel individually.
Quote
Currently all the panels in a rooftop photovoltaic system
. . . are connected to one large inverter mounted on the side of a house
. . . from which the AC power is off loaded to the house or grid.
This is being done as solar panels are wired together in series, and
. . . their combined high-voltage DC power is fed to the inverter.
From that current flow
. . . the inverter’s logic circuit optimizes the total current and voltage levels.
. . . But if one panel’s current drops,
. . . . . . it becomes the limit of the overall output of the system.
Leesa Lee, director of marketing at Enphase points out the problem,
“Something as simple as a leaf blowing over a module,
. . . or dust or debris or shade on one module,
. . . will affect the entire array of all those modules that are connected in series.”
Think bird poop and all the other things falling out of the sky as major problems,
. . . but mostly canceling the equality of each panel,
. . . that forces production to the least efficient module.
It’s a bigger problem than many realize.
. . . are connected to one large inverter mounted on the side of a house
. . . from which the AC power is off loaded to the house or grid.
This is being done as solar panels are wired together in series, and
. . . their combined high-voltage DC power is fed to the inverter.
From that current flow
. . . the inverter’s logic circuit optimizes the total current and voltage levels.
. . . But if one panel’s current drops,
. . . . . . it becomes the limit of the overall output of the system.
Leesa Lee, director of marketing at Enphase points out the problem,
“Something as simple as a leaf blowing over a module,
. . . or dust or debris or shade on one module,
. . . will affect the entire array of all those modules that are connected in series.”
Think bird poop and all the other things falling out of the sky as major problems,
. . . but mostly canceling the equality of each panel,
. . . that forces production to the least efficient module.
It’s a bigger problem than many realize.
