Advanced microcontroller based control .

Buck-Boost regulator wide input range.

Fuzzy based Maximum Power Point Tracking (MPPT).

Reverse polarities protection of PV and battery .

Battery overcharge and over discharge protection .

quick and safe charging for battery.

Temperature compensation.

Automatic cooling fan.

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There are four parameters that are monitored inputs to the fuzzy model:

1) The ,

2) The current flowing through the battery,

3) The analog control voltage that controls the duty cycle of the

PWM chip.

4) The battery voltage,

The output of the fuzzy model is a bipolar voltage signal that is

summed with the control signal to decrease, increase, or leave

unchanged the control voltage input to the PWM chip.

The input and output parameters were fuzzified into three

subsets each – low, medium and high, and triangular/trapezoidal

membership functions used for each variable.of 17

In any applications which PV module is energy source, MPPT solar charge controller is used to correct for detecting the variations in the current-voltage characteristics of solar cell and shown by I-V curve. •

MPPT solar charge controller is necessary for any solar power systems need to extract maximum power from PV module; it forces PV module to operate at voltage close to maximum power point to draw maximum available power. •

MPPT solar charge controller allows users to use PV module with a higher voltage output than operating voltage of battery system.

MPPT solar charge controller can be applied to other renewable energy sources such as small water turbines, wind-power turbines, etc.

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The fuzzy logic approach allows a smooth control surface to be established with a fast development time.

During charging, the solar panel’s operating point is adjusted

by modulating the duty cycle of the buck-boost converter’s switching Device using a fuzzy logic control algorithm to optimally charge the battery.

Discharge data on the batteries and current voltage characteristics of the solar cell will be presented and the fuzzy logic model development for the charge control will also be presented.

The current model is not optimized but provides a good initial model for the charge control.

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Microcontroller(dsPIC30f4013)

Buck-boost Converter(MAX1171)

Liquid Crystal display.

Temp Sensor(LM35)

Solar(PV) Panel.

Battery.

Charging circuit.

Cooling FANof 17

IDE for Microcontroller MPLAB IDE

Debugger and Programmer ICD-2

Programming Language Embedded C

Fuzzy Sets Algorithms Fuzzificztion The fuzzy rule Algorithm defuzzification

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12-bit ADCwith: 100 Ksps conversion rate Up to 13 input channels Conversion available during Sleep and Idle

Memory 48 Kbytes on-chip Flash program space. 2 Kbytes of on-chip data RAM.

four 16bit Compare/PWM output functions. Programmable Low Voltage Detection (PLVD) four 16-bit Capture input functions. five 16bit timers/counters. High current sink/source I/O pins:

25 mA/25 mA

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IDE: Integrated Development Environment

Software package that lets you assemble, compile, link, export and debug programs.

ICE: In Circuit Emulator:Hardware that allows you to test the developed

programs on non-real (emulated) hardware. To test ICE you need IDE.

Programmer:Is a piece of hardware, e.g. PICkit 2, PM3 that allow the export of executable .hex files (load) files to the PIC processor’s memory directly. It is driven by the IDE.

MPLAB IDE: Free integrated

development environment (IDE) from Microchip to implement code for PICs

Latest version 8.0 (recommended).

IDE and documentation (user guide) can be downloaded from the Microchip website

• To open MPLAB IDE– StartAll ProgramsMicrochipMPLAB IDE v8.00MPLAB IDE

90% Efficiency for 30mA to 2A Load

Currents 2V to 16.5V Input Range 110μA

(max) Supply Current.

5μA (max) Shutdown Current.

Preset 12V or Adjustable Output Voltage.

Current-Limited PFM Control Scheme.

Up to 300kHz Switching Frequency.

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Linear + 10.0 mV/°C scale factor. Rated for full −55° to +150°C range. 0.5°C accuracy guaranteable (at +25°C). Calibrated directly in ° Celsius (Centigrade). Suitable for remote applications. Operates from 4 to 30 volts. Low cost due to wafer-level trimming. Less than 60 μA current drain. Low self-heating, 0.08°C in still air. Nonlinearity only ±1⁄4°C typical. Low impedance output, 0.1 W for 1 mA load

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high contrast lcd supertwist display.

yellow/green with led backlight.

interface for 4- and 8-bit data bus.

power supply +5v or ±2.7v or ±3.3v.

operating temperature 0~+50°c.

led backlight y/g max. 150ma

no screws required: solder on in pcb only

ncl. hd 44780 or compatible controller

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