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Yes my own 90v to 180v dc input 5Kw "Warpverter".

One potential method not mentioned would be to use a very heavy suspended weight and a pulley. This need not be expensive, if you just happen to have a disused vertical mine shaft or a suitable cliff edge nearby. It might work something like a lift well. If you have a VERY long steep slope...

Here is a picture of my version two circuit board in the final stages of completion, showing the two small SM-12 power supplies in the middle. I used plug in screw terminal blocks, which makes it very easy to swap in another board or change mosfets very quickly, without needing to use a...

Have to agree. You cannot impose morality on people, it is a product of upbringing and culture, and the spirit within.

People in cold climates have been building homes like this for hundreds if not thousands of years. Place a massive stone fireplace and stone chimney right in the middle of a smallish house, extending up through a second floor. Holds heat for days and heats every room.

Agree with previous posters to use the fence as a wind break. Sure you cannot attach anything to the fence, but you can move your array up to within a foot of the fence. Once the wind gets underneath those panels, they are going to be toast. If it has to be completely exposed, put another...

Pretty simple really, Design a really good 100% efficient device, give the customer a ten year unconditional guarantee regardless of what he/she does to it, and provide a 200 page service and operators manual with glossy pictures in 32 different languages. You should be able to do all of that...

Using a battery to directly drive an inverter without using a low frequency isolation transformer is begging for trouble. If the inverter blows up, it will very likely put high voltage dc direct into your household appliances killing anything that has a transformer or an induction motor. That...

If I had a solar system capable of 200 amps, I would not be using just a single 200 amp solar controller. It would be much more practical to use multiple lower powered controllers. They are much easier to design and build, and offer some very useful redundancy. If the requirement is for a...

Low voltage rated mosfets win hands down when run at low voltages. The "on" resistance is so very low, nothing else even comes close for conduction losses and speed. But as the voltage rating of the mosfet increases, the "on" resistance rises much faster. High voltage mosfets are pretty...

The whole world is laughing at America these days.

When I first built my east/west arrays, I assumed that performance in winter would be pretty poor, because the sun is mostly low in the sky to the north, and the days are very short (southern hemisphere). I was pleasantly surprised that in very poor cloudy conditions it contributed just as much...

There are quite a few hidden features in all of this, that may not be immediately obvious. Firstly its not too difficult to see how switching the primaries generate the required three level rectangular voltage waveforms in the secondaries, and how the series connected secondaries all add these...

It certainly does, but that has a lot less of an effect than most people have been led to believe. I have been thinking about all this for years, and I just had to try the idea. Once you have a means of easily adjusting the actual operating point up and down manually with a potentiometer, you...

Just found this thread. A super simple cheap no frills mppt controller is fairly easy to make, but there are those pedantics that are never happy with a simple solution. Basically what we must do is control the electrical loading on the panels, so that the voltage at the panel stays pretty much...

Or just completely shun any equipment that requires any kind of internet connection to work.

MY HEAD HURTS.

Sorry, but that is technically quite wrong, you have been taken in by sales mumbo jumbo. Oh by the way, I am a retired power electronics design engineer. I will go into discussing the electronics as deeply as you wish, its what I do. Before retirement I used to design this type of equipment for...

Human civilization has existed for thousands of years without the internet. Why does everything now need to have full connectivity and software licenses ? The way its going, even an electric toothbrush needs to have a colour touch screen display, wifi, and be able to be controlled remotely via...

This is hilarious. Its like asking how can I make myself completely explosion proof ? Well first you need to ask what kind of explosion, something a mile away, fifty feet away, or a fire cracker going off in your shorts. Anything can be blown up. And anything can be totally destroyed by EMP...

Just found this thread. A super simple cheap no frills mppt controller is fairly easy to make, but there are those pedantics that are never happy with a simple solution. Basically what we must do is control the electrical loading on the panels, so that the voltage at the panel stays pretty much...

WTF ? People have been successfully designing and building their own home built inverters and MPPT solar controllers for decades. You are really on the wrong Forum for that my friend. People here only seem to be interested in connecting up cheap Chinese boxes. Try The Back Shed Forum. Take a...

Yes, that is it EXACTLY.

One thing you should know about an EMP attack. The idea is to hit an enemy, than wait for a time until the enemy has repaired much of his equipment, using up any available spare parts. Then hit again. This time no further repairs are possible.... Then its back to the middle ages without...

Yes it does, its the usual way that it is done. N1 must equal P1, this is usually very easy to do because the connections are usually short and symmetrical. N0 and P0 can be any length and do not need to be the same.

Yes, Xantrex and Trace make inverters of this type, its nothing really new. Theirs have three inverters, which is entirely adequate with probably around 3% THD. I went a bit further with four inverters, but the principle is exactly the same. Its not a method as widely known about as it should...

You have this all wrong. Amp hour capacity is a rating, like saying a two gallon bucket of water holds two gallons. What you are suggesting is a cheap two gallon bucket may only hold one gallon. And a very expensive premioum quality two gallon bucket may hold three gallons. Its either a two...

From what I have read, there are two potential issues with charging to the higher voltages. The first is that usually, the battery as a whole is charged to some total final voltage, and we cannot be certain that some cells in the series strings are not reaching much higher voltages than we...

I believe all those companies have some kind of relationship as ownership changed hands. I built my first inverter of this type quite independently over forty years ago, about the same time Trace built their first version, although I knew nothing about Trace at the time. I quickly realised it...

It certainly does have massive surge capability, fully protected on the ac side with just a normal C curve thermal/magnetic circuit breaker. Its also fully bi directional. Really nasty highly reactive loads can bounce out of phase current right back onto the dc bus. All the Warpverters now...