296 Results for "MPPT"

Overview of MPPT algorithm modelling
Log from ARDUINO MPPT SOLAR CHARGE CONTROLLER
Panel model consists of a simple step-wise linear model of a solar panel.See the above figure.1. Constant Current : up to 18 volts 2. Constant Power : between 18 and 19 volts 3. Power decline linearly to zero : between 19 and 21 volts 4. Zero Current...

7/15/2020 Designed MPPT
Log from solar powered boat
I have designed and built my own working MPPT. A few notable differences:a) free software and hardware design. b) all ceramic capacitors. This slightly increases efficiency as electrolytic capacitors are often a weak link and...

Web-connected MPPT Solar Charge Controller
Log from Arduino MPPT Solar Charge Controller
The most convenient way to communicate with a device on a network is through a web browser. The Raspberry Pi runs a Lighttpd web server which serves the web pages. This leads to the question of device access to the charge controller which is easily solved...

Testing the Hardware MPPT Approach
Log from Hardware MPP Tracking
I finally got a chance to try the hardware MPP approach in a working converter. I used the prototype for my Solar Charger. I had to remove one of the SEPIC cores to make room and hack a few changes into the backplane. The MPP control loop is similar...

PWM or MPPT: That is the question
Log from Solar MPPT Charger for 24/7 "IOT" devices
Twelve-volt solar charging systems have a long history. Before charge controllers panels were connected directly to the battery through a blocking diode to prevent battery discharge by the panel at night. The panels were sized so that...

Manual MPPT Solar Charging at Work !
Log from Arduino MPPT Solar Charge Controller
I got pretty good results today. The 4 Watt panel delivered 4 Watts at full sunlight and the battery is being charged at 3.5 Watts, about 88% efficiency.That is almost a Watt more than the previous solution where I simply placed a Drok buck converter...

08/31/2020 rework MPPT circuitboard
Log from solar powered boat
I have improved the MPPT by adding 5 filter capacitors.These capacitors greatly stabilize the voltage and current readings. This allows for quicker peak power tracking, although the algorithm sometimes gets confused if the light level is increasing...

MPPT Solar Charger from Buck Converter-Fail
Log from Solar Charge Controller MPPT Test Facility
I tried to build an MPPT solar charge controller by just using an inexpensive buck converter which you can get on Amazon for $10. The idea is to use the potentiometer on the buck converter that sets the maximum (constant) current to set the current to...

8/28/2020 Greatly improved mppt sketch
Log from solar powered boat
Superior filtering and actual maximum power point tracking. Solar panels' maximum power point is usually about the same in widely varying light conditions. Normally the duty cycle should be adjusted so that the voltage of the panel remains...

MPPT Solar Panel Controller : Android App
Log from Low cost solar panel solution (MPPT + sun tracker)
The Android App is simply used to monitor and control the ESP32 firmware. This App is written in Basic4Android. This language is very close to .Net language and offer a really powerful way to write Android (or IOS) application in no time. The full...

Software requirements for MPPT controller V3.1
Log from ARDUINO MPPT SOLAR CHARGE CONTROLLER
Software requirements for MPPT controller V3.1Draft by Keith Hungerford, updated 12th September 2015Charging statesThe charger operates in one of several charging states, depending on the sunlight level.Charger OFF stateAt nil or low sunlight levels,...

7/22 Initial sketch working on mppt controller.
Log from solar powered boat
It uses a fixed duty cycle of 80%. This is a proof of concept that I could get more power from the panels than a regular controller or direct battery connection. The array of ceramic capacitors have a large inrush current, much more...

LRMS MPPT Solar Power Module - Test and Characterization
Log from LoRa End Node & Remote Monitoring System
R1 used with a INA3221 voltage and current monitor as a prototype model for revision 2. Prototype for revision 2:Weather conditions: 2022/09/22 : Sunny with occasional high thin clouds 2022/09/23 : Early morning thin overcast followed Sun...

perrinboys
Hacker in USA
Working on Solar MPPT charger

597619388
Hacker in China
PV MPPT

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