AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go...
-
Upload
victor-mcfarland -
Category
Documents
-
view
214 -
download
1
Transcript of AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go...
![Page 1: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/1.jpg)
AC COUPLE
![Page 2: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/2.jpg)
AC Coupled Systems
• Growing market segment• Can be confusing!• Can be complicated!• Numerous ways to go• MidNite has taken most of the mystique
out of the equation
![Page 3: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/3.jpg)
Before we show how to make AC coupling easy, let’s see just what AC coupling is
![Page 4: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/4.jpg)
Why AC Couple1. a way to use those expensive grid tie
solar panels during a power outage2. Provides limited power during a power
outage3. Allows the installer to go visit their grid tie
customers with something useful to sell
![Page 5: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/5.jpg)
What is AC Couple• AC Coupling is a controlled back feed to a
battery based inverter• A back feed is hooking up AC to the output
of an inverter• Normally when you back feed an inverter,
they blow up (try it sometime, smile)• AC coupling is a synchronized back feed• The grid tie inverter shifts frequency to
match the battery based inverter before connecting. This makes it ok to do
![Page 6: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/6.jpg)
AC Coupling of inverters
• Battery-less grid tie inverters require a grid to be connected before they will turn on. The grid must meet certain voltage and frequency parameters.
• You have all heard about anti-islanding requirements that the inverters must meet
• Battery based sinewave inverters can meet these requirements
• Inverters do not need to be grid tie listed
![Page 7: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/7.jpg)
AC Coupling of inverters
• Not all battery based sinewave inverters are capable of backfeed.
• Your choices in North America are:• SMA Sunny Island• Outback FX, VFX and Radian• Magnum PAE series• Schneider XW series
![Page 8: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/8.jpg)
SMA Sunny Island
![Page 9: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/9.jpg)
AC Coupling of Inverters
• The Sunny Island and Sunny Boy communicate with each other to insure proper battery charging during a power outage.
• No other inverter combination can claim this
![Page 10: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/10.jpg)
SMA Sunny Island
Since the Sunny Boy output is
240VAC and the Sunny Island
input is 120VAC, a step down autoformer is
used
![Page 11: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/11.jpg)
SMA Sunny Island
Notice that the output of the SB connects to the output of the SI
The autoformer changes 240V to
120V
![Page 12: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/12.jpg)
SMA Sunny Island
The SI inverter has only one AC
input. We provide an
optional ATS that5 fits inside
our SMA E-Panel
![Page 13: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/13.jpg)
The Sunny Island/Sunny/
Boy combination was designed to be AC Coupled
They thought of everything
(from a European point
of view)
![Page 14: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/14.jpg)
SMA in Germany still has problems with the US
NEC code. The Sunny Island is
not easy to install to meet
code
![Page 15: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/15.jpg)
SMA had been requesting that MidNite Solar make them an
E-Panel for years. We finally
did
We did not realize how big a deal this was
going to be!
![Page 16: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/16.jpg)
The pre-wired system shown
here is as plug and play as they come
The top piece is the autoformer
Battery box and cabling is included
and drop ships where you want it
![Page 17: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/17.jpg)
E-Panel with ATS
option installed
All SMA E-Panels
come wired for 240VAC
(2 SI inverters)
![Page 18: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/18.jpg)
E-Panel shown with AC bypass switch, 500 amp shunt
and sub panels
breakers installed
![Page 19: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/19.jpg)
Dual systems do not require an autoformer
![Page 20: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/20.jpg)
Need a large AXC coupled system?
![Page 21: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/21.jpg)
We even designed a 1000 amp battery combiner for this system
![Page 22: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/22.jpg)
SMA AC Coupled systems
• SMA AC Coupled solutions for 1 to 4 inverters
• 4,500 watts to 24,000 watts• Purchase pre-wired and tested or parts• Remember those tech service people we
mentioned? You may need to involve them on your first system.
![Page 23: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/23.jpg)
Enphase AC Coupled systems
• Enphase systems are pretty much the same as all others
• When using a Magnum PAE inverter, you must limit the PV array to less than 4000 watts.
• Failure to do this will result in inverter failure
• Magnum is the easiest for Enphase AC coupling
![Page 24: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/24.jpg)
This exact
system is now on our
price list and
available for order
![Page 25: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/25.jpg)
The disco combiner is
there for reference only
We do have a three string AC disco combiner
![Page 26: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/26.jpg)
The Grid Tie inverter
shown can be Enphase or any 240VAC grid tie up to 4000 watts of actual output
![Page 27: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/27.jpg)
Since the two different
inverters have no
communication, we install a SSR
to knock the grid tie off line
as required
![Page 28: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/28.jpg)
This is a pictorial wiring diagram
![Page 29: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/29.jpg)
Uncontrolled battery charging
• Magnum and OutBack inverters charge batteries from AC connected to their outputs
• The inverters sense circuits that control charging are on the AC inputs not the output, therefore cannot control charging
• These inverters charge wide open and cannot taper off.
• A relay is required to disconnect the GT
![Page 30: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/30.jpg)
Uncontrolled battery charging
• SMA has controlled battery charging and tapers off as the batteries get charged
• This requires that the AC coupled system is comprised of a Sunny Island and Sunny Boy. They were designed to work together.
• No external relay required
![Page 31: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/31.jpg)
Uncontrolled battery charging
• Schneider WX shifts frequency to knock the grid tie inverter off line for 5 minutes.
• The XW does this with any brand grid tie inverter, but battery charging does not taper off.
• No external relay required
![Page 32: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/32.jpg)
Uncontrolled battery charging
• OutBack inverters do not taper off like the SMA, nor do they shift frequency like the XW
• You must add an external relay between the grid tie inverter and the battery based inverter
• The OutBack aux output can supply the power & control to drive an external relay
![Page 33: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/33.jpg)
Uncontrolled battery charging
• Magnum inverters do not taper off like the SMA, nor do they shift frequency like the XW
• You must add an external relay between the grid tie inverter and the battery based inverter
• The Magnum router can supply the control to drive an external relay, but not the power
![Page 34: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/34.jpg)
The solid state relay eliminates battery over charging
![Page 35: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/35.jpg)
Hook up the output from your grid tie inverter here
![Page 36: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/36.jpg)
Hook up the sub-panel hereThis is the AC output of the
inverter
![Page 37: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/37.jpg)
Hook up the mains utility connection here
![Page 38: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/38.jpg)
Hook up the neutral and ground connections from the main
distribution panel here
![Page 39: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/39.jpg)
4000 watt limit
• This limit only applies during power outages
• We have another method that allows larger arrays, but reduces the array power during outages
• This is a radical modification, but works
![Page 40: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/40.jpg)
A solid state relay is placed inside the combiner to reduce quantity of strings
![Page 41: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/41.jpg)
This is a self contained pre-wired AC coupled system
![Page 42: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/42.jpg)
All wiring is behind the breaker panel
![Page 43: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/43.jpg)
All required over current and disconnects are in place, wired
and tested
![Page 44: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/44.jpg)
Multiple battery configurations available. Shown is just one
![Page 45: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/45.jpg)
The enclosure
for this system is
made from aluminum
and is suitable for
outdoor locations
![Page 46: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/46.jpg)
Nice looking AC coupled addition
to an existing grid tie system
![Page 47: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/47.jpg)
OutBack and Schneider
• 2 OB inverters are required for AC Coupling.
• OB offers superior regulation during outages and has a built in aux circuit
• Schneider offers a good inverter for AC coupling. The XW will shift frequency to knock the GT offline
![Page 48: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/48.jpg)
Install responsibly, always use protection
![Page 49: AC Coupled Systems Growing market segment Can be confusing! Can be complicated! Numerous ways to go MidNite has taken most of the mystique out of the.](https://reader035.fdocuments.us/reader035/viewer/2022062620/551aad43550346856e8b4c61/html5/thumbnails/49.jpg)
The MidNite kitty