New high efficiency solar concept no battery

**GridWorks Green** · 10-17-2022, 11:28 PM

If I can take car charging off the main battery system and run the mini split when the car is not charging off the new system the flooded batteries might last a bit longer, I like having new batteries just bites to pay and maintain them.
Was testing a 1600 watt version of the new power system at 10AM was running a dual tube quartz heater on Hi and the house lights circuit, ran the heck out of an electric leaf blower, only car charging made it fail, after 10 seconds of car charging four of the eight FETs melted on the 2000 watt board, betting doubling the FETs will lead to successfull car charging, 20 FETs on the way early November.

**GridWorks Green** · 10-18-2022, 12:42 PM

Have been working daily on the sun sensor to improve it's function, now winter weather has moved in and noticably thicker clouds than previous days, sun sensor calling for grid power only.
As a test I reduced the lights down to about 200 watts and added a bypass switch for the sun sensor, surprise the lights are back on nice and bright, this new power system maintains 122-126 voltage even in very low light levels just don't expect too many watts running this way.

**GridWorks Green** · 10-18-2022, 02:37 PM

I really like what is going on right now with low light operation of the power board, instead of running into the complexity of a multi level sun sensor think what is needed is a timed override like 2-4 hours on the sun sensor then it returns to normal or just a plain switch like now suddenly I need a project box for the sun sensor relays.

Now I have an adjustment knob and switch on the face of a multiple relay box called the sun sensor to build.

**GridWorks Green** · 10-18-2022, 06:03 PM

faulted at 5PM (regular shutdown time) and I put the sun sensor switch back to normal, switcher went to grid, ready for the next day.
Simply amazing what can be done with these power boards.

Under heavy overcast sky, 5 LED bulbs,1 ceiling fan and 3 security cameras 10AM to 5PM.
Running 9 panels 800watt configuration, on the 1600 watt version you could expect twice that or more even on bad solar day we did not get precipitation today but it did snow in the mountains.

**GridWorks Green** · 10-18-2022, 10:30 PM

It is almost finished version 4 of the sun sensor will update drawing tomorrow just put in a nice bypass switch and 50 ohm adjustable volume control, still can't upload pictures/attachments have a nice picture of the controller box.

**GridWorks Green** · 10-19-2022, 04:28 PM

Today was a total opposite of yesterday clear blue skies, on a day like today I can power most anything

**GridWorks Green** · 10-21-2022, 11:54 AM

Information at the end of the other thread include: solar sensor details version 4, R2 reverse relay detail, How to attach arms to the actuators to trip the micro switches, helpful assembly tips.

Another wonderful solar day.

On the other Gopower IC3000 system the side by side fridge switcher is performing better than expected long term runs on solar (Timed 9:30AM to 3:30PM + Sun sensor) 6 hours most days. Only uses 4 - 15 amp micro switches and performs flawless, trick is to space them properly and keep the switches and actuators factory clean.

**GridWorks Green** · 10-24-2022, 04:18 PM

Not yet $40 but getting there $65.49 this month.last month $80 neighbor across the street previous month $300.
New power system and switchers at work you do the math.

**GridWorks Green** · 10-26-2022, 05:15 PM

Just occurred to me how to use rechargeable batteries if you want with the new power system, I have been doing this all along by charging the green lawn mower batteries but not thinking about it in the right way.

First a flow diagram (Solar PV 180volts DC to power board 120VAC to Isolation transformer 120VAC to LI-ION battery charger, LI-ION batteries to inverter, Inverter to second isolation transformer to the second power source on the switcher unit.)

This is how you can run 24/7 on a single or double new power system using batteries.

**SunEagle** · 10-26-2022, 05:23 PM

Originally posted by GridWorks Green

Just occurred to me how to use rechargeable batteries if you want with the new power system, I have been doing this all along by charging the green lawn mower batteries but not thinking about it in the right way.

First a flow diagram (Solar PV 180volts DC to power board 120VAC to Isolation transformer 120VAC to LI-ION battery charger, LI-ION batteries to inverter, Inverter to second isolation transformer to the second power source on the switcher unit.)

This is how you can run 24/7 on a single or double new power system using batteries.

It still comes down to how many kWh you use in a 24 hour period and what a battery can safely provide without shorting it's life.

Some people can do it and others not. I use about 70kWh a day due to living in Florida and requiring AC to keep the wife happy. Others can live off of less then 30kWh a day.

**jflorey2** · 10-26-2022, 10:42 PM

Originally posted by GridWorks Green

First a flow diagram (Solar PV 180volts DC to power board 120VAC to Isolation transformer 120VAC to LI-ION battery charger, LI-ION batteries to inverter, Inverter to second isolation transformer to the second power source on the switcher unit.)

Lot of losses in that string of many conversions! Making some conservative assumptions, you'll get less than 50% of the energy out at the end of that chain.

**GridWorks Green** · 10-26-2022, 11:08 PM

The first two parts of the chain are scary efficient, bet most users will be surprised with the performance of this chain.
All depends on how big the battery array is and solar input, I envision a second system to top off batteries for night time use/ charged two lawn mower batteries at the same time in less than two hours.
Both systems will feed the same output of the switcher depending on the sun input that day, expect most people reaction to be somewhere between "Thats impressive" to "Heck yeah"

**SunEagle** · 10-28-2022, 10:19 AM

Originally posted by GridWorks Green

The first two parts of the chain are scary efficient, bet most users will be surprised with the performance of this chain.
All depends on how big the battery array is and solar input, I envision a second system to top off batteries for night time use/ charged two lawn mower batteries at the same time in less than two hours.
Both systems will feed the same output of the switcher depending on the sun input that day, expect most people reaction to be somewhere between "Thats impressive" to "Heck yeah"

just be careful you don't kill off those lawn mower batteries before next season when you will need to cut the grass.

**GridWorks Green** · 10-28-2022, 11:44 AM

Only large LI-ION batteries I own, use flooded deep cycle in the house for safety reasons on the older system.

Adapting a damaged 1000 watt pure sine board into a secondary mimic for the 2000 watt power board, both boards will reside in the same old inverter case for a total of 3000 watts combined, still a few weeks away from getting the FETs and retesting EV car charging, need success this time around to advance to the next big step with the new power systems.
Figure max power to be 1700 watts continuous on the 3000 watt power board for car charging.
Plan on keeping the original 800/1600 watt system no battery.
Would consider it an honor to have someone do a dual directly driven system with batteries and chase out the bugs.

**GridWorks Green** · 10-30-2022, 07:22 PM

I have an opertunity in the upcoming car charger test to setup a three thousand watt pure sine power board with three strings of 9 solar panels in parallel for max power of 2600 watts vs 1700 watts max with two strings of 9.

I plan to put in the extra work to exceed the need of the car charger instead of just making it work during the next test.

New high efficiency solar concept no battery

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