New no battery pure sine wave solar power system with smart switchers.

[GridWorks Green Solar]

Testing ended early, the Inverters should work independently but that is not case as I moved the big heater load from A to B channels, nothing damaged just need to better understand what is going on, The small heater worked on both channels.

Mostly good results.
Lots of good clean power up to 200 watts per channel, Something off may be poor quality 100K potentiometers. Need fixed resistors or something.
No picture but big LED bulbs burning brightly both channels at the same time.

It is a keeper all about balanced outputs for the P and N MOSFET channels and good quality parts for the 555timer.

More later

 

[GridWorks Green Solar]

Maybe testing error is the issue, starting too early lower set of panels had not developed full power yet, More testing tomorrow....

 

[GridWorks Green Solar]

Have gone back to bench test and ready the inverter for tomorrow, Has passed balance readjusting and ready for dual high voltage 140VDC testing again.

Unfortunately clouds are moving in from a Hurricane, It will be about getting good sun again for future load testing.

Don't worry not letting go of this one going to press forward till it runs part of the home on a daily basis with solar.

Several questions from today's testing must be solved to up the Amps, Next full load testing will be conducted between 11AM to 2PM on a full sun day.

My hope is the problem experienced in today's testing was the result of too early in the morning to run the lower set of 7 panels at full power.

More soon

 

[GridWorks Green Solar]

Packing for two week vacation, Will be back soon to continue the work with the two FET inverters, last testing shows great promises in running smaller loads with really clean power also a mystery about why I couldn't get the 500-600 watts previous like from the single two FET inverter board

More later

 

[GridWorks Green Solar]

What I have accomplished on my 50/50 working/pleasure vacation.

Starlink gen 3 install 300MB download speed, 3D printed pole adapter for gen3 dish.

Full solar survey for new home.

Installed 3 round remote controlled ceiling fan/light units.

New dash camera for a car.

About to go on a three day destination wedding for a young couple in Michigan.

Speed test while running two HD TVs,two laptops and three Iphones picture.

More soon

 

[GridWorks Green Solar]

Have finished all the tasks planned for this trip including reconfigure the power port on a Nissan rogue to only run the front/rear dash cameras when the ignition is on, heated seats circuit powers the dash cameras.

Taking off in a few hours for the destination wedding event.

More later

 

[GridWorks Green Solar]

Back home safe yesterday afternoon, right now under flood watch next three days, New double inverter will be long term tested as the sun conditions return.

Live in a very low spot in east Tennessee the next few days will be a nail biter, flood wall is already being stressed.

More soon

 

[GridWorks Green Solar]

Knoxville TN area got lucky, sever flood damage all around basically next area to the east North Carolina got deep water and west areas got moderate deep water.

Forcast clearing sky conditions, I got very lucky waters could have been 5 foot deep where I am sitting now.

Testing will restart soon️

 

[GridWorks Green Solar]

Erase of duplicate post, sorry

 

[GridWorks Green Solar]

East TN blessed with the valley to high mountains that splits in half 9 out of 10 storms in the region, this storm was a classic example of the effect.

Center of storm split in half over the Knoville area.

 

[GridWorks Green Solar]

Family member back safe from Black Mountain North Carolina, I40 closed, no power, no water, no cell service, expected to be that way for weeks.

Had to come home South Carolina to Atlanta to I-75 to Knoxville TN. Around 500 miles.

Last two days sun between 3:00 and 3:15PM , Looking for full midday sun to restart the testing, Soon

 

[GridWorks Green Solar]

Permanent Testing has started again on the two FET inverters, already off to a strange start, 60Hz signal good, N channels good, both P channels are not operating despite pre bench testing and verify 140VDC input to the dual two FET inverter.

Also retesting the original purple board two FET inverter, it had no problem pushing the big quartz tube heater and with big input capacitors it seems to make use of the second 50% cycle power.

Going to follow the path to the most/best 120VAC 60Hz power.

When I make foward progress I will report on it.

 

[GridWorks Green Solar]

Have been side tracked with other home maintenance items, metal roof repairs longer screws installed, gutter maintenance, rear gate maintenance.

Just cleaned up and bench tested one of the original two FET purple V1.2 boards, ready for solar panel testing, should be powered up at sun up tomorrow still waiting on good mid day sun conditions for more load testing.

Took double FETinverter out of service after testing the N channels for about 6 hours, it is headed back to bench testing for no power on the P channels.

More soon, focusing on maximum output from 14 standard solar panels and making this inverter run things daily.

More soon

 

[GridWorks Green Solar]

Stability issues, have had it working better previously may be haunted by a batch of cheap 100K potentiometers for channel output or the boards need remounted in the cases what ever it takes I will chase out the bugs and stay focused on the permanently on aspect. The two FET inverters Dead P channels not working due to blown 5 amp solar PV glass fuse. Unknown cause for the fault but likely to unstable operation of the clock signal.

May take a while to recover to what I have had working previously, more soon

 

[GridWorks Green Solar]

Baby steps forward replacement of 100K P channel potentiometer with expensive part and instantaneous fixed for P channel stability

Going to do the same for N channel and replace the cheap 100K potentiometer, a full week of sunny days ahead.

Going to get it done this week.

More soon

 

[GridWorks Green Solar]

New test two FET P & N inverter, sun is just starting to rise 60Hz signal good, Looking for midday sun to loads testing.

Purple board original two FET inverter V1.2 .

Small heater running plus two lights waiting on noon or later to test the big heater. Around 200 watts running very smooth at 10AM.little heater is on high, induction Fan motors running good.

More real soon.

 

[GridWorks Green Solar]

Noon test, AC voltage a bit low but able to run everything just fine, test is a success.

Continuing to run small heater on high in the back hallway, Noticeably warmer on this cool 60 degrees Fahrenheit day, after adjustment of the inverter voltage just a touch higher I will soon retest again.

Final picture both heaters running on low 4amp draw on 5Amp glass fuse, everything can be adjusted higher.



More soon

 

[GridWorks Green Solar]

Small compact circuit board inverter and solar panels make the system. Needs case,fan,fuses ect.

Can easily run Lithium Ion Battery chargers for example lawn equipment.


Simple catch the sun when it is available and turn it into 60Hz/50Hz AC power to use anyway you can think of.

Current system is running the 60Hz timing signal from a 12VDC battery that also simulates another 12VDC solar panel.

Low maintenance, no batteries, no charge controller, although currently not using one for this testing a ISO transformer is recommended for output power safety. Epoxy dip a working board up to the FET leads to make it weather proof and extremely durable.

Next test going to adjust upward both P and N channels to 125VAC on the inverter output with 100watt load and retest all again. This testing starting on 120VAC base line with 25watt load balanced output and consider it successful but could use a small voltage boost, very happy with today's testing.

More soon

 

[GridWorks Green Solar]

Just pushed up the voltage on the two FET inverter from a balanced 91VAC to 103VAC balanced while under load.

Small heater and two lamps running great will turn off heater at 5PM and just let it fade out for the night. Over 6 hours today of good sun produced power.

New concept will continue to be expanded on and used daily depending on sun conditions.

Final picture both heaters on low and everything lit up, this thing could push a ton of LED lighting

More tomorrow

 

[GridWorks Green Solar]

Off to a good start today but realized from testing that another purple board previously made can probably push more amperage.

The word permanent means to me best build possible in a closed inverter case, No wire nuts if possible.

I am going to put the inverter on the bench and make it happen.

More later

 

[GridWorks Green Solar]

Have a ball of green LEDs that light up when the sun shines on the solar panels, thinking of using a LED driven optic coupler to turn on the 60Hz signal for the sun driven two FET inverter daily

Also using a voltage controlled relay and delay timer can protect the inverter by dropping the loads during passing clouds and overload conditions.

Impressed with heater output in warming up the laundry area/ back hallway of the house, 7 standard 12VDC panels B1 input 140VDC, 7 standard panels B2 input 140VDC, one standard 12VDC panel to run the 555timer 60Hz clock circuit.


Inverter is on the bench for upgrades to daily usage standards.

More soon

 

[GridWorks Green Solar]

Working on purple board original inverter V1.2 - V1.6 on Github, going with large solar input capacitors to smooth the power of the 50% duty cycle inverter, adding small high purity copper wires to the circuit board to boost amperage flow, the high quality FETs can handle it.

More soon

 

[GridWorks Green Solar]

Sorry so long just got the new inverter build to pass dual 24VDC bench testing to proceed with dual 140VDC solar input testing, 12VDC regulated input power to the 555timer is crucial for long term operations ( the problem is a spike in 12 VDC voltage can trigger a fault in a inverter adjusted for maximum voltage output, the difference between a freshly recharged 12VDC battery and 70% charged battery caused a fault on the previous board.) Phase overlap.

Also built a 8X10 metal shed kit looks like wood with about 300 screws, also a ton of seasonal yard work.

Best wishes More soon

 

[GridWorks Green Solar]

Big step forward with 12VDC power supply for the 555timer 60Hz circuit, Found a modern 12VDC regulator power supply and added a large capacitor and blue LED indicator light for the power input to the inverter timer signal, the wall wart will be powered from the UPS that drives the project power system

Best part is no money spent on the fix old DIY transformer power supply 12vdc just did not meet the regulated voltage requirement.

As soon as I get a balanced response 120VAC from the inverter output the permanent cover goes on and Daily power production and testing begins.

Will take a couple photos before the cover goes on standard two FET board (purple) Version 1.2 on get hub. V1.6 should be stronger/more amps but is not been tested as of yet.

On to something big here, wish others were helping. 320 watts continuous midday power 120VAC 60Hz from a direct solar drive Inverter.

7+7 standard solar panels 12VDC small low cost circuit board

 

[GridWorks Green Solar]

Final stage of bench testing, open case/closed case views. Easy to build easy to fix Mosfets can be tested while soldered to the circuit board single channel direct drive. Self draining capacitors will discharge 140VDC in minutes after turning off PV panels.

Optic coupler isolation from DC power makes for easy control and adds safety.