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1. MPPT
BY: 17MSE004

2. Solar cells have a complex relationship between temperature and total
resistance that produces a non-linear output efficiency which can be
analysed based on the I-V curve.It is the purpose of the MPPT system to
sample the output of the PV cells and apply the proper resistance (load)
to obtain maximum power for any given environmental conditions.

3. FUNDAMENTALS

4. (1.)MAXIMUM POWER
TRANSFER THEOREM
In electrical engineering, the maximum power transfer
theorem states that, to obtain maximum external power from a
source with a finite internal resistance, the resistance of the load
must equal the resistance of the source as viewed from its output
terminals.
𝑰 =
𝑽
𝑹 𝒔+𝑹𝒍
, 𝑷 = 𝑰 𝟐
𝑹 𝑳 =
𝑽 𝟐
𝑹𝒔 𝟐
𝑹 𝑳
+𝟐𝑹 𝒔+𝑹 𝑳
𝑫/𝑫𝑹𝒍
𝑹𝒔 𝟐
𝑹 𝑳
+ 𝟐𝑹 𝒔 + 𝑹 𝑳 =−𝑹𝒔 𝟐/𝑹 𝑳
𝟐
+1
𝑹𝒍= 𝑹 𝒔

5. Converters
DC to AC
Inverters
DC to DC
Buck
Boost
Buck Boost
(MPPT)
AC to AC
Voltage
controller
Frequency
Cycloconverters

6. (2.)BUCK BOOST
𝑽 𝒐
𝑽 𝒊
=
−𝑫
𝟏−𝑫
𝑹𝒊𝒏 = 𝑹 𝒐
𝟏−𝑫 𝟐
𝑫 𝟐

7. (3.)MPPT
ALGORITHMS