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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Solar: a very interesting subject !!!Posted by Romy the Cat on: 7/25/2018
 PurePower wrote:
After over a year, the customer finally disclosed that he had a full solar installation with inverters attached to his home, generating extremely high harmonics.  Had we known he had a solar install, we would have had a solution almost immediately instead of trying to find a fix for something that wasn’t broken inside the PurePower unit.
 
By the way - we have provided a number of sucessful solar power installs to improve solar power inverter power for audio systems.
Richard, leaving aside the debate about customer satisfaction and how presence of a solar installation might be related to the PP internal buzzing I would like point out something interesting. I do feel that multiple PP regenerators in the same household do impact sound destructively. At least I clearly heard it in my old listening room. I did not makes those experiments in my new listening room. The rooms are different from electrical standpoint. The old room had 100A power feed and was more or less in an urban environment. The current listed in room has 400A feed and in very much rural setting, my town has no stores or traffic lights. I do think I need to try the second regenerator in another room to see how it will work.  
 
Saying that I do have a few APS regenerator in house running, including some commercial on-line 2kW regenerator, which is from electrical perspective the same PP. I also have 13kW solar system. The inverter of the solar system is the same PP generator. I did not use micro-inverters as I was afraid that they return back more noise than a good single SolarEdge inverter with optimizers. Now, I do not make claim that my solar installation do not impact sound adversely, I think it should as much as second PP would as the SolarEdge inverter is not different then PP inverter. It might be different inverters react to each other different in case the use different sampling frequencies. I think PP works at 25kHz and I wonder of the other inverters use the same and how it impact the sound. This all would be a good to test but frankly for 2 years that we live here, even my setup is up and running it is not up to the level of the satellites when I would be able to pick up any single electrical fart. Also, with 3 small kids and the rest of the things that are going on I have enough on my plate now to be busy and even I have a lot of curiosity on the subject I do not do a lot of practical experiments lately.  
 
So, my question is: what is you beef with solar installations and what solution you offer to rectify it? If it possible then can you in subjective term describe the problem with Sound you heard, or your customer heard, in context of solar installations. I was sitting on fence for very long time with solar and the sonic objectives was my main objections but last year wify made me to do it, primary because Trump and her green paranoia. So, I would be very welcome to have a conversation about solar systems impact to sound.

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