Do EV chargers introduce noise?

MikeCh

MikeCh

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We don't own an electric vehicle but plenty of my neighbors do! Does anyone know if the most common EV home/garage charging systems introduce noise on the grid? We sometimes hear stories about electrical noise introduction from things like welders in the neighborhood, noisy appliances, hairdriers, old cell phone technologies, etc. and how they can be bothersome to an audio system. Are these EV chargers isolated in some manner or could they too inject noise "from next door"?
 
That’s a great question, never thought about that. Wonder if an isolated sub panel would help.
 
In October of 23' i had a couple of Tesla Powerwalls installed in my garage to give me power outage protection. In August of 24' I had 8k of solar to go along with the battery back up. So, I've had a year or two to live with the effects of any solar and battery usage. As spring brings more sun in the NW I can start using solar during the day to run my house charge my car and use the stereo during the day and battery during the night. Solar charges my car and fills my Power walls. I've had friends over and would switch from the grid powering my system, switching on the fly to solar or battery. No one can hear the difference. Now, my power to my home and stereo room has had a lot of thought and upgrades to grounding, dedicated sub panel to the stereo room using all copper and quality audio grade cable and outlets, So, it's a system that runs very quiet and stable. But, just to give me more peace of mind I added a Vinshine power condition that is said to block EMI and DC interference. I use it for the PF Scion, LAiV DAC, uDDC and Oppo CD player. My Gryphon is straight to a wall outlet. Others may have different results.
 

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MikeCh said:
We don't own an electric vehicle but plenty of my neighbors do! Does anyone know if the most common EV home/garage charging systems introduce noise on the grid? We sometimes hear stories about electrical noise introduction from things like welders in the neighborhood, noisy appliances, hairdriers, old cell phone technologies, etc. and how they can be bothersome to an audio system. Are these EV chargers isolated in some manner or could they too inject noise "from next door"?
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Running your toaster probably creates more noise than your neighbors chargers.
 
Yes. Overall, they can add a bit of noise, but modern EV chargers are well-filtered. So you're unlikely to notice anything from your neighbor's installation.
 
There are two transmission paths for interreference; conducted through power lines and radiated through the air. EV chargers and solar controllers all have large switched mode power supplies (SMPS) that radiate and conduct RFI. The extent they do varies by manufacturer and model. As an amateur radio operator, these things create broadband inference up into the hundreds of megahertz, making it impossible to hear weak signals. Then again so do LED lights and shit Chinese power supplies.

Will this impact your stereo? It’s crap-shoot. It depends on proximity and the equipment you or your neighbors have installed and how resistant your stereo is to this kind of interference.
 
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