Differences

This shows you the differences between two versions of the page.

--- electrical:solar:output [2020/05/17 19:42]
frater_secessus [panel tilt]
+++ electrical:solar:output [2020/05/20 11:30]
frater_secessus [charge controller type]
@@ Line 10: / Line 10: @@
 ===== charge controller type =====
-Due to their design, [[electrical:solar:charge_controller#pwm|PWM]] and [[electrical:solar:charge_controller#shunt|shunt]] charge controllers will very rarely allow the panel to run at max output for given conditions.  The lower the battery voltage (Vbatt) the lower the panel voltage (Vpanel), therefore the lower the power output.((Vpanel * ~Imp = P))
+Due to their design, [[electrical:solar:charge_controller#pwm|PWM]] and [[electrical:solar:charge_controller#shunt|shunt]] charge controllers will very rarely allow the panel to run at max output for given conditions.  The lower the battery voltage (Vbatt) the lower the panel voltage (Vpanel), therefore the lower the power output.((Vpanel * ~Imp = P))  The output can be increased somewhat by [[electrical:solar:pwm_tweaking|tweaking battery voltages higher]].
 [[electrical:solar:charge_controller#mppt|MPPT]] controllers can run the panel at max output when needed, but are much more expensive.
@@ Line 107: / Line 107: @@
 ===== panel tilt =====
-Insolation figures are given for flat surfaces((like flat-mounted panels)) but you can increase yield by keeping the panel more perpendicular to the sun.  The downsides are setup time/effort, and (with van-mounted panels) the requirement to park the van at a particular angle in the campsite.
+Insolation figures are given for flat surfaces((like flat-mounted panels)) but you can increase yield by keeping the panel more perpendicular to the sun.  The downsides are setup and takedown time/effort, and (with van-mounted panels) the requirement to park the van at a particular angle in the campsite.   Tilt might be more practical for people who stay in one place for longer periods rather than moving every couple of days.
 **Optimum aiming** involves both tracking the suns elevation above the horizon (zenith) and tracking the sun's east-to-west travel (azimuth).  Doing both can increase yield ~30% but requires frequent repositioning.
-**Leaving panel tilt in a reasonable default** is more common and has milder yield improvments.  In this approach the panel is aimed at true((not magnetic)) south((in the northern hemisphere)) at a particular angle above the horizon depending on time of year and latitude.
+**Leaving panel tilt in a reasonable default** is more common and has milder yield improvments.  In this approach the panel is aimed at true((not magnetic)) south((in the northern hemisphere)) at a particular angle from perpendicular((ie, flat panel)) depending on time of year and latitude.
 Tilt angles calculated by [[https://www.solarpaneltilt.com/|solarpaneltilt.com]]:

RV and vandwellers wiki

User Tools

Site Tools

Differences

Page Tools