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Xringer · 12-06-11, 07:49 AM

The goal was to:

A. keep the SSR off, until the PV charged the capacitor up to 144 volts. (Vmp of the array).
B. Then turn on the SSR to discharge the cap into a 10 ohm load. (But not discharge it below aprox 100v)
C. Repeat.

Without the SSR, the 800w array will typically only heat up the load to around 400w.
Because, the load resistance is so low, it drags the PV array down to 60v.

By allowing the cap to reach the max power point voltage of the array,
before discharging it into the load, more power is delivered to the load.

So, the goal is to harvest 800w from the 800w array..

12-06-11, 07:49 AM	#6
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	The goal was to: A. keep the SSR off, until the PV charged the capacitor up to 144 volts. (Vmp of the array). B. Then turn on the SSR to discharge the cap into a 10 ohm load. (But not discharge it below aprox 100v) C. Repeat. Without the SSR, the 800w array will typically only heat up the load to around 400w. Because, the load resistance is so low, it drags the PV array down to 60v. By allowing the cap to reach the max power point voltage of the array, before discharging it into the load, more power is delivered to the load. So, the goal is to harvest 800w from the 800w array.. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..