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

I have 6kw PV panel, in case of partial shading it's capacity reduces to 3kw. But, the MPPT tracker I designed it specifically for that 6kw rating, now because of partial shading the same MPPT tracker ...
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How to calculate efficiency of an MPPT Algorithm

My PV system with an MPPT algorithm is extracting about 97% power of the Maximum power that can be extracted from the panel. However, the matching of the load through converter did not happen as ...
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How to asses the performance of an MPPT algorithm?

I have a standalone pv system with PV Panel rating 6820W, a buck converter, 12V battery , DC resistance (load) of 8 ohm with Perturb and observe (P&O) as the control algorithm. Upon simulating, ...
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How to calculate the maximum load that a standalone PV system can handle?

I have a 6820W pv panel, a boost converter, a H-bridge inverter, a 48V 540Ah LI-ion battery, a 100ohm dc and a 100ohm ac load in my system. My question is what is the maximum load that this system can ...
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MPPT charge control voltage drop

What would explain a voltage drop on the load side of a MPPT solar charge controller? My power source is not actually a solar panel, but a 12v 300watt DC power supply. At present there is no battery ...
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Plugging an MPPT controller into another MPPT controller

I am installing a CTEK D250SE charger into my camper trailer. The D250SE contains an MPPT controller for charging from a regular solar panel. The catch is that my existing solar panels already have an ...
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Help designing a thing to do with micro wind generation MPPT

Firstly, be gentle with me - I'm about at the watts=voltsxamps level, I've had an idea but need help. Is there anyone with an interest in MPPT (more like MPP in fact) controllers? What I would like to ...
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Clear my confusion on PV or PQ nodes of power system with renewables?

A solar PV is connected to a node of the power system through a converter circuit. Is it possible to understand that the solar operating at maximum power point(MPP) be considered as a PQ node? or a PV ...
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SLA battery + MPPT use in a go kart

I'm building a hybrid PV/battery kart that is intended to weigh 120 kg with driver and average 30 km/h on a flat tarmac go kart track in full sun. I'm expecting that to require average power of 48 V x ...
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MPPT solar buck charger - how does it sense when to change charge stage/regime

I have a well-engineered MPPT buck solar charger that I am looking to repair; the schematic is unavailable. The charger is unstable, and randomly changes what charge regime it's in. Does anyone know (...
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Adding 12V power supply to existing Solar MPPT load circuit

I have a camper which has a small 12v power system consisting of a 50w solar panel, a generic 20ah LiFeP04 battery, an a 15A Victron MPPT controller whose 12v load output feeds directly to a fuse ...
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Parallel-series connection of an odd number of solar cells

I plan on having the following array in my system: Vmpp voltage at max. power point for each cell is 1.67 V Impp current at max. power point is 18.4 mA As the number of cells in the right "...
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Does use boost type converter for Photovoltaic MPPT tracking?

I was a developer of PV module. so, I know the electrical characteristic of PV cells and MPPT concepts well. I just wonder, Can I use the buck converter for MPPT? I saw that buck converter can be used ...
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Polarity protection for mppt solar battery controller

I have a cheap MPPT solar battery charge controller I use as a lab for high school students. It has no reverse battery polarity protection and wanted to add some protection because we've lost some ...
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Is it a good idea to charge multiple Li-Ion batteries using a single buck converter?

I am trying to implement a DIY MPPT into my solar tracker project and I wanted to know if it was possible to charge all of the three li-ion 3.7v batteries in series with just one feedback buck ...
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Using a boost converter controller in an MPPT application

I am hoping to use a standard synchronous boost converter (LTC3786) for MPPT controlled solar panel to battery. Nearly all applications I see make reference to adjusting the PWM DC to control input ...
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Connect Wind turbine to existing solar inverter with MPPT

Currently I am doing research on connecting a 3.5 kW wind turbine to an existing grid tie solar inverter with MPPT. It would be very nice to use the widely available PV inverters and connect a wind ...
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Can I use "ideal diode" in series in solar cells?

i have a small experimental solar panel system to gain knowledge before moving on large power systems. My system is 5 solar cells in series, each 5.8V 0,52A (peak power). So total is 29V 0,52A (about ...
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The purpose of solar MPPT? [duplicate]

I already know what a MPPT is supposed to do. It's basically a buck/boost converter connected to a solar panel that finds the ideal power output by changing (boosting or lowering) the voltage of the ...
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Solar charging a 18650 Battery ( MPPT vs TP4065 )

Most my solar project which includes ESP8266, a sensor and solar+ battery + MPPT charging module. In some tutorials I saw a use of TP4065 as in this tutorial While MPPT optimizes charge for varying ...
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Need help with maximum safe load on a C10 battery in a Solar power system

I have a solar system with 20Amps/12v MPPT, 150ah/12v C10 battery, 500watts/24v panel and 1000va inverter. I have a few questions. Can I use a 750w cloth iron on this for 30 minutes? As per my ...
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Power coefficient Cp of wind turbines

The power coefficient of wind turbine (ratio between useful mechanical power and the total wind power) varies when the tip-speed ratio varies. I know also that we tend to keep constant the power ...
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MPPT three-phase rectifier - BLDC generator project

I'm building a MCU controlled 3phase rectifier that allows voltage and current control. The generator is a BLDC motor (Kv=100, Imax=30A, poles arrangement=36N42P.) It will produce from 16V to 50V ...
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how to create electronic switch cut off PV from MPPT charger when no battery connection

MPPT chargers are sensitive if PV is connected without battery connection. MPPT will be destroyed. So I want put electronic switch on MPPT PV input in a relation with battery voltage . No voltage on ...
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PWM and MPPT charge controller on same solar panels

I have two identical solar panels in series that are connected to an MPPT controller (EPEver Tracer 1210A), which is currently charging two SLA batteries connected in parallel meant to power some ...
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MPPT charge controllers in series to handle high voltages

If I have 500v of solar power can I run 10 mppt charge controllers in series? So each mppt would only see 50v because I'd be using 10 cheap mppt controllers in series. From there it'd be charging a ...
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Solar cell input for LTspice

I am trying to send a solar input into the LT8390 in LTspice. I am having trouble finding example circuits in LTspice that I can implement. Any direction or LTspice model files would be very helpful.
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Getting most power from low voltage solar powers, each different angle

I have a specific problem. I have 10 small solar panels, each max 5.5V and 100mW power. Each one is at a different angle. I want to get the most power out of it. Cost is not really a problem, but I do ...
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Question about setting the MPPT on BQ24650

I have a question about the MPPT in BQ24650 chip. It has the MPPTSET pin that need to get 1.2v because the inside comparator. According to the datasheet, on ...
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MPPT power balance constraints [closed]

I am implementing an MPPT controller with a battery charging controller to charge a lead acid battery. The question has to do with my understanding of how MPPT works. From what I understand is that ...
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What's the use of the LODRV pin in the 2BQ24650 mppt batery charger circuit

I'm looking at the datasheet of the ic and I kind of understand what's going on. Apart from the typical sensing and signaling pins there are the HIDRV and LODRV pins which drive Q1 and Q2 respectively....
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Enhancement and MPP of a basic Al-air battery with saline electrolyte

I created a simple Al-air battery in oceans using Aluminum and graphite electrodes with ocean water as the electrolyte. There is no electrical separation between the electrodes due to design ...
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lead acid battery charger from solar input [closed]

Good day, I have a 12V 24ah lead Acid battery that I have to charge with a solar panel input. My initial solution to the problem was to implement a buck or a buck-boost DC-DC converter with MPPT and ...
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Understanding working of MPPT charger

I am trying to understand working of MPPT charger for LiPo battery (3.7V nominal) and 6V 2W solar ‎panel so that I can select right charger for my project. After searching and reading lot of related ...
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Some questions about the CN3722 solar charging IC and its MPPT setting

I'm currently working on a project, where I have to charge batteries by solar. For this reason I chose the CN3722 IC. Since I want to create my own PCB with all the necessary parts I had to read the ...
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Maximum Power Point Tracker (MPPT) charge controller - what drives the weight?

I'm having trouble finding any literature paper that studies this problem. What drives the weight of an MPPT charge controller? How would I go about reducing that weight if I had to design a custom ...
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Solar panel to battery, dc to dc converter question

I need to design an MPPT and the converter that uses it. the thing is: the Solar panel has a max voltage of 40V and the battery that is going to be charged is around 100V, the most easy thing would be ...
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DC converter use in solar cell MPPT

According to this project I saw many design use same principle by using MPPT to adjust PWM of buck converter. I totally get MPPT algorithms except the DC to DC converter part. Let's call solar panel ...
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Low voltage MPPT boost converter IC, constant input voltage

Following scenario: I have a bunch of Sunpower C50 unprocessed single solar cells. I'm trying to make a panel out of them for hiking. According to the datasheet each cell has 0.574 Vmpp an 5.65 Impp ...
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How to convert 240 VAC to 240 VDC [closed]

I have a few questions, namely: I aim to charge a 220 VDC battery pack with solar panels producing 240 VDC when open circuit using an MPPT charger. Where may I get such an MPPT charger? I'd like to ...
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MPPT buck converter vs Ordinary buck converter?

I’m building a small arduino project which is going to be powered using a small solar panel setup with a battery as it’s UPS for power backup during the dark. The setup is going to be like Solar ...
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overcharging issues in MPPT solar controller with NO output leads

My MPPT solar controller has no output leads. It contains only the (+,-)leads for battery and solar panel. Input is from the solar panel and output goes to battery.Therefore, I have to connect my load ...
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MPPT Reads Negative Amps

I have MPPSolar PCM5048 MPPT which is connected between the solar panels and the batteries. It was working well until yesterday as a sudden it reads negative amps on the battery current. it keeps ...
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Input/Output Impedance of DC/DC converters and Impedance matching

I am interested in understanding how do DC/DC converters achieve impedance matching for maximum power transfer applications. After visiting this entry, you can see in the "impedance matching" ...
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Is it safe to have two batteries in series on a solar panel system with 14.22v and 14.46v?

I have two batteries in series plugged to a solar panel system. In parallel they used to balance each other perfectly. But now i'm trying to have a 24v system and I have them in series. They ...
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What is the maximum voltage for MPPT/PWM to charge a X volt battery?

I currently have a PWM 12/24v (auto commute) with ~18V as input and a 12V battery in the output. I wanted to switch to 24V battery and I thought about going ~36v solar panel. (18V * 2) Then I saw ...
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Cable length and voltage drop in offgrid solar installation

I have connected my Lithium-ion battery pack(11.1v 100ah ) with my Epever MPPT charge controller using 5M length of 8 AWG cable. when i put load which consume around 12A , the charger controller shows ...
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Solar panel and power bank

I would like to charge a 20,000mAh power bank with a 18V 20W solar panel. The power bank has 8*18650 batteries in parallel. I came out with 3 options. The first one is to use a buck DC-DC converter ...
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How to tell if a solar regulator is MPPT or PWM

I have a solar cell charging a 12v battery via a maplin TPS 1230 solar charge regulator. By using some basic instrumentation and some simple maths (i.e. measuring the current and voltage on the input &...
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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 ...
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