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Solar Regulators and Inverters To Avoid
- Solar Regulators and Inverters To Avoid
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Solar Regulators and Inverters To Avoid
VK3ZAZ > 16-11-2023, 03:01 PM
Renogy and Rego Multipoint Tracking.
Kings MPPT aka other names. Evert etc. spurs all over 2M bsnd and opens mute on multiple fm channels.
Victron MPPT series. White crackles on six,
Any cheap Chinese.
Qrm on 28 -50-144
Rego inverters. Crap on hf unless you filter it with major surgery.
What works
Redarc pwm
Morning star TriStar pwm ts-60.
Imam told mppt does but unproven.
Save yourself some $
Victron. Noisy on six -
RE: Solar Regulators and Inverters To Avoid
VK5PJ > 17-11-2023, 12:04 PM
any solar regulator from Jaycar... wide band pulsing noise all the way up to 432 MHz is what I found here, as the author said, Victron MPPT regulators unless you are prepared to put some substantial chokes into the feed from the Solar panels as this seems to be the radiation path for RF interference, then they seem to be acceptable for HF and use on SIX once choked.
for those who might want learn more about filtering the Solar panel DC feed, have a look here: https://www.eenewseurope.com/en/dc-filte...r-noise-2/ I cannot find the links I had for filters that were available in VK but will keep looking for them, filtering the Solar panel feed gave the best results for me ( I ended up using a pair of ferrite cores would with some heavy wire ). -
RE: Solar Regulators and Inverters To Avoid
VK4ADC > 17-11-2023, 01:08 PM
Just an aside here :
I fitted an ECO 20A MMPT solar regulator into our caravan as a replacement for the originally-fitted PWM device back in 2017 Obviously that was done to improve the battery charging system. A side issue was the thought that I might have to "quieten" it to enable me to operate HF or VHF portable from the van whilst away travelling.
The original PWM device 'roared', the MPPT was not quite as bad as just-connected-in-lieu and nothing else added. The incoming solar charger leads were then fed through a heavy duty rocker switch then via a large powdered-iron toroid, one for each lead (+ve and -ve), and that made a large difference. I then filtered the outgoing DC leads in the same way, and the QRN was reduced further. The addition of a 470uF 50V electro on both the input pair after the filtering toroid (ie directly on the regulator connection terminals), and the output as well dropped the QRN levels even further. A high-ish value ceramic disc cap was added in parallel with each of the 470uF caps and now there is virtually no solar regulator hash evident.
I can work HF or VHF using antenas mounted off the caravan's structure (so very close physically) and you would think that if there was going to be QRN, there would be. The in-from-the-panel switch is useful in disconnecting the charge current when confirming/isolating any noise sources, and I have found other caravans in van parks generating lots but switching off the incoming current to my regulator makes nil or slight difference only.
These days I just set up the van as usual when we arrive on-site, eventually unload my "portable box", connect either AC or DC power and the antenna-of-choice-for-today, and I realised just then that I don't even bother to see if there is any van-based QRN affecting the setup - there just isn't anything significant. So you can apply simple hash-reducing methods and get substantial improvement at little cost. Try it.
Doug