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1 vote

Determine voltage and current for given I-V curve

My question is, again, how can you tell what current\voltage the charge controller gets? It depends on how smart it is. Let's start with dumb. Suppose the battery is discharged, so the charge ...
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1 vote

Determine voltage and current for given I-V curve

Determine voltage and current for given I-V curve It depends what load is connected to it. Google "load line" for a method of graphically comparing the IV curve for the source (solar panel) ...
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2 votes

Matching Solar Panel to TP4056 Charge Controller

TP4056 is linear charging controller. That means it will dissipate power in order to regulate power that goes into battery. The higher input voltage and higher current the higher power is dissipated ...
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0 votes

If we change the PV panel, should we also change the MPPT controller block?

If your MPPT controller can control the load so it matches the rise in PV output impedance when shaded then your energy conversion will be optimal. This demands you regulate PV voltage with solar ...
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1 vote

Grid is capacitive in the evening

This is a new answer to an old question. simulate this circuit – Schematic created using CircuitLab If we simplify the grid feeder transmission lines with some mH/km and nF/km for each line, ...
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1 vote

Boost converting 0.5V PV output to charge a super capacitor

With all the PWM modules that exist nowadays, I can hardly imagine a better, cheaper and more efficient solution than something like this: DC-DC 1.3-36V 5A Digital Voltage Regulator Module XL4015E1 ...
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2 votes

Why a diode is in parallel with the current source in the equivalent circuit of a solar cell?

I know I'm four years late, but none of the other answers here acknowledges that the diode in the model actually is real. A conventional PV cell *IS* a giant PN diode, and the current source in the ...
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0 votes

If we change the PV panel, should we also change the MPPT controller block?

A lot of MPPT controllers have a voltage/current range where they perform optimally and a much wider range where they perform "somewhat". You may be operating in this wider range when the ...
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Can anyone explain the role of some of these blocks in this PV inverter system?

1)Battery Switches Relay protection for battery Charge (Ch) and Discharge (Dch) 2)Unipolar Switching I believe it is the port for modulating the DCAC inverter with an "Amplitude modulation ...
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Can anyone explain the role of some of these blocks in this PV inverter system?

The batteries can be charged or discharged. The switching selects this. The DC rail voltage needs to be converted to the mains peak voltage and be able to vary it. This is what the flyback converter ...
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