Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [mppt]

Maximum power point tracking is a technique that grid connected inverters, solar battery chargers and similar devices use to get the maximum possible power from one or more photovoltaic devices, typically solar panels, though optical power transmission systems can benefit from similar technology.

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A naive solar panel maximum power point control circuit

I am fooling around with a solar panel, just to try stuff and learn in the process (not trying to produce something I would actually use). Its placement is very far from optimal - vertically behind a window pointing south-west. In the late…
Mishony
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Understanding the working of an MPPT solar charger

I am trying to understand the working of an MPPT charger for a Li-po battery (3.7 V nominal) and a 6 V, 2 W solar ‎panel so that I can select the right charger for my project. After searching and reading a lot of related material on the net, my…
Zeni
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Achieving MPPT of a solar panel with an LM2596

I'm having some trouble with DC converters in a solar power system. I have a solar panel of 21 V (Voc) and 1.33 A (Isc). I have reaf that using a DC buck converter with input regulation (feedback loop taken from the input) would result in a fixed…
MDuarte
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How does an MPPT charge controller control the input voltage?

I understand how buck/boost converters change the output voltage, but how is an MPPT converter able to control the input voltage/current while keeping the same output voltage? I understand the theory of MPPT, but not the implementation, and every…
Daffy
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How do MPPT charge controllers curtail the power if the load is less than the solar generation?

I am trying to understand how MPPT charge controllers work when the load is less than the solar power generation. Let's assume an off-grid system with battery backup and no dump load. In my understanding, the following situations can happen: solar…
Noman Bashir
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How do SolarEdge power optimizers work? Can I use them to charge battery pack directly?

When looking for some MPPT solutions for a solar car, one of the things I have considered were these wonderful small "Solar Optimizer" modules provided by SolarEdge. However, they are clearly intended to be connected to their SolarEdge household…
Power Max
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Different Wattage Solar Panels for Home [different Voltage/Ampere]

My current solar system for home 12V 100W polycrystalline Solar Panel. 12V 75Ah Lead Acid solar tubular Battery. PWM 12V 10A Solar Charge Controller. 12V Input and 200VA Output Inverter. Current Problem Battery not getting charged fully daily…
Rajesh Nayak
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Cathode to cathode diodes in schematics

I'm trying to understand the following circuits for an MPPT, and I do have some questions: Why there is a capacitor C6 in parallel with R2 for the voltage divider for analog reading, and how was the value of 0.1µF selected? Why are (D11,D12) and…
dxtr
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Voltage drop on Solar Cell MPPT

I'm trying to build my own MPP Tracker on Solar Cell, here's my schematics Explanation : PA6, PB0, PB1, PB2,PA3 : I/O Pin PA 7 : PWM Pin PA4 : Used to measure voltage PA0 and PA1 : Differential ADC to measure current The problem with this circuit…
duck
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Confusion about solar cells and MPPT

Pardon the potentially silly question. I have been reading about photovoltaic (PV) cells and max power point tracking (MPPT). From what I understand, a MPPT module can use a DC-DC converter to change the voltage on the PV's terminals to its…
superkittens
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How to properly drive MOSFET in MPP tracking duty cycle above 50% for a synchronous buck regulator at 50-100V input?

I'm currently building a 10W high voltage (~50V-100V) Maximum Power Point Tracking (MPPT) buck regulator on the side for educational purposes. For the time being, the output is tied to a load. Things are working well, and the circuit properly tracks…
TRISAbits
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I have a schematic where the bases of two transistors are connected with each other. I don't understand how it is supposed to perform any function

I'm reverse engineering a MPPT charge controller. I looked at its PCB and I drew the schematic from it and I've been as thorough as I can (checking and cross-checking many times). I know the "Intermediate circuit" schematic is jumbled up, and this…
xrosaber
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How is the output of an MPPT solar charge controller connected to a battery?

I have some confusion about how the output of an MPPT solar charge controller should behave. In my head, I'm thinking of a perturb and observe system where the output should oscillate around the Maximum Power Point (MPP). Let's say I'm using a 12…
Microcontroller Enjoyer
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New DIY project try to understand MPPT

I got used battery MODULE with the next specs "40V 18.4AH 736WH build of ninety six A123-26650 LITHIUM LIFEPO4 cell " Cell specs: Nominal Capacity: 2300mAh Voltage(nominal,V): 3.3V Internal impedance(1kHz AC typical,mΩ): 6 HPPC 10 Sec Discharge…
Hosamsad
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MPPT Buck converter query

I am looking at prototyping a buck based MPPT solar cell system but am mainly confused by how the solar cell I-V characteristics are manipulated by the buck converter to give the optimum power to the load. I believe it is essentially an impedance…
Hart22
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