Could one of you explain what this feature is all about?
Buck or Boost DC to DC converter operation available in 2011.
It's listed as #29 on this list of features:
http://www.wholesalesolar.com/pdf.folder/controller%20pdf%20folder/MidniteSolarChargeControllerSpecs.pdf (http://www.wholesalesolar.com/pdf.folder/controller%20pdf%20folder/MidniteSolarChargeControllerSpecs.pdf)
A typical MPPT controller Buck converts (Down Converts) the Input voltage to match the battery voltage. The Classic will boost convert (up convert) the input voltage to a higher battery voltage.
WOW, I'd not seen the Boost mode mentioned for some time, so thought that it had been dropped.
Is all the hardware present in the first units, ie, only Firmware update needed ?
Or, will the early units need hardware mods/additions for Boost ?
Thanks again. Vic
Quote from: Vic on December 17, 2010, 10:21:28 PM
WOW, I'd not seen the Boost mode mentioned for some time, so thought that it had been dropped.
Is all the hardware present in the first units, ie, only Firmware update needed ?
Or, will the early units need hardware mods/additions for Boost ?
Thanks again. Vic
It's pretty much software, a lot of testing, then more software adjustments and then over again.
boB
how about a veg oil diesel runing on wvo 28 volts dc 7kw aircraft dc gen on it use to be on army ordnance APU 2cycl diesel Hazts and boost up to a 48 volt battery bank think it will work to might have to see if can make a automatic renewable energy control box for best combination of wind hydro,solar and vegoil power of coures being carefull not to let the smoke out fuse everything Cheers Mike
Quote from: boB on December 18, 2010, 03:14:51 AM
Quote from: Vic on December 17, 2010, 10:21:28 PM
WOW, I'd not seen the Boost mode mentioned for some time, so thought that it had been dropped.
Is all the hardware present in the first units, ie, only Firmware update needed ?
Or, will the early units need hardware mods/additions for Boost ?
Thanks again. Vic
It's pretty much software, a lot of testing, then more software adjustments and then over again.
boB
I observed the Classic 200 input/output voltages really close to each other - like 2V - in U-Set % mode. I believe this would not be possible without boost capability if the Classic was just a straight buck type down-converter. But I think currently, the other charging modes of the Classic currently assume that it's a buck converter so they sweep 6-8 Volts minimum above the battery voltage. Seems that the efficiency is higher when the array voltage is at least 6-8 Volts above the battery voltage.
Quote from: laszlo on July 26, 2011, 09:05:06 PM
Quote from: boB on December 18, 2010, 03:14:51 AM
Quote from: Vic on December 17, 2010, 10:21:28 PM
WOW, I'd not seen the Boost mode mentioned for some time, so thought that it had been dropped.
Is all the hardware present in the first units, ie, only Firmware update needed ?
Or, will the early units need hardware mods/additions for Boost ?
Thanks again. Vic
It's pretty much software, a lot of testing, then more software adjustments and then over again.
boB
I observed the Classic 200 input/output voltages really close to each other - like 2V - in U-Set % mode. I believe this would not be possible without boost capability if the Classic was just a straight buck type down-converter. But I think currently, the other charging modes of the Classic currently assume that it's a buck converter so they sweep 6-8 Volts minimum above the battery voltage. Seems that the efficiency is higher when the array voltage is at least 6-8 Volts above the battery voltage.
The input to output voltage differential can be extremely low. That is, if the Low-Max (LMX) feature is enabled (Tweaks/More). The lower the current, the lower the differential. I have even seen the input voltage slightly below the output voltage myself which even surprised me. Not much lower though, maybe 1/2 Volt and this was at basically 0 current.
boB