22
APPENDIX PV MODULE SELECTION
Find the following PV panel parameters first, and calculate to see if it meets the product
’s acceptable
spec range (See
Technical Specification
section).
PV Panel Parameters
Description
Corresponding Product Spec
Pmax
Max. output power (W)
Max. input power (W)
Vmp
Max. power voltage (V)
Optimal operating voltage range (V)
Imp
Max. power current (A)
Charging current (A)
Voc
Open-circuit voltage (V)
Max. PV input voltage (V)
Isc
Short-circuit current (A)
Max. PV input current (A)
Please consider below requirements:
(a) Total Voc < Product
’s max. PV input voltage
(b) Vmp falls within Product
’s optimal operating voltage range
If one PV module cannot meet this requirement, connect multiple PV modules in series to
increase the total voltage.
Example for CPD1200EO12LCD
After considering Voc of PV module not exceeds 40VDC and Max. Vmp within 15~18VDC, we can
choose PV module with below specification.
Pmax
85W
Max. PV module numbers in series
1
→
18VDC÷17.6
Vmp
17.6V
Imp
4.83A
Max. PV module numbers in parallel
10
→
50A÷4.83
Total PV module numbers is 1×10=10
Voc
21.6V
Isc
5.03A
Example for CPD2200EO24LCD
After considering Voc of PV module not exceeds 55VDC and Max. Vmp within 30~36VDC, we can
choose PV module with below specification.
Summary of Contents for CPD1200EO12LCD
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