Questions tagged [solar-energy]

Form of renewable energy emitted by the Sun, coming in two flavours: photovoltaic and thermal. The former, especially, relates closely to electrical engineering since it is traditionally harnessed through semiconductor devices and converted to AC in order to feed the electric grid or individual users' homes.

Filter by
Sorted by
Tagged with
5
votes
1answer
102 views

Can a solar inverter be damaged if installed capacity is much larger than demand?

I had a dispute with my fellow. In his opinion, a power inverter can be damaged if the load is much lower (e.g 100W) than installed capacity (e.g. 10kW) of the solar system. I am of the opinion that ...
3
votes
1answer
3k views

Modeling a solar panel for simulations

I need to simulate a power conversion system (using SIMetrix/SIMPLIS) in which solar energy is captured by a solar panel, which is then connected to an inverter for supplying current to the grid. ...
4
votes
2answers
578 views

How does a residential grid-tied solar system work exactly?

Ok.. so I know how solar panels are connected to a combiner box & tied into a charge controller/inverter. I also know that the AC from the inverter must be in phase with the line/mains power. ...
3
votes
2answers
323 views

LT3652 Inductor Selection

First question here In my system, a LT3652 IC should drive a solar panel with these specifications: Voc = 9,94V Vp = 8,54V Vmp = 7,95V Isc = 0,90A Wp = 7,15W to charge a 3,7v Li-Ion battery at ...
2
votes
3answers
96 views

Problem with a relay decoupling voltage

I made a simple circuit to alternate its output between two inputs: a photovoltaic panel and a 12V DC voltage source. The schematic: The step source represents the photovoltaic panel and the two ...
0
votes
1answer
379 views

What is needed to change in this SparkFun solar charger module to reach 2A of current?

This open source product from Sparkfun (named Sunny Buddy) features Linear Instruments LT3652 MPPT li-ion/li-poly battery charger IC that can support up to 2A charging current. Unfortunately, the ...
0
votes
0answers
61 views

Using Constant Current Power Supply to control Load Output of a Grid-Tie Inverter

tldr: How do I adjust the power being dumped by my grid tie inverter? Is it possible to use a constant-current power supply to do so? I am planning create a PV system that will help reduce my ...
0
votes
1answer
295 views

Is is safe to let my PWM charge my 12V battery at 14.8V?

I have a 12V battery linked to my solar panels. In the middle I have a PWM charge controller, that is configured by default to charge the battery if Voltage if lower than 14.8. At night, battery ...
0
votes
1answer
71 views

12V - How to activate an electric item if battery is full

I have a solar system 12V connected to a PWM controller 20A and a lead-acid battery 80Ah deep cycle. What kind of setup should I make to activate a pump (12V) if the battery is full ( >13.8V ) ?
0
votes
0answers
744 views

Grounding Neutral Off Grid Solar

Is it recommended to ground the neutral line in an off grid solar system? A nonisolated inverter would be by definition wired this way, right? I believe that in home electrical systems neutral is ...
0
votes
2answers
2k views

18V/5W solar panel to trickle charge a 12V car battery?

I'm running a small Arduino project out of an old 12V car battery (that was on my car since 2008 till 2015). I also have a 18V/5W solar panel. Can I connect them together so the solar panel charges ...
-1
votes
2answers
334 views

Battery bank system for a load of 1600 Watts

How many batteries of 12 V x 125 Ah needed to continuously run a load of 1600 Watts using an inverter of 24 VDC x 120 VAC that uses a battery bank as primary source? For a load of 1600 W , at least ...