Presentation glyndwr ch stu 2

Maximum power point tracker

for PV applications

Chernigiv State Technological UniversityOleksandr Veligorskyi

Ruslan ZarovskyiMaksim Khomenko

2

World energy consumption

© BP Statistical Review of World Energy 2011

3

Renewable Energy Share

© Renewables 2011 Global Status Report. 2011.

4

Top 10 by solar PV capacity

© Renewables 2011 Global Status Report. 2011.

5

Advantages of the solar energy

complementarities with traditional and other renewable energy sources,

flexibility (mobile, roof- or ground-mounted), environmental-friendly (no produces noise), little need of maintenance (PV system have

no move or rotate parts), lifetimes – up to 30 years.

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PV World Capacity vs. Papers

1996

1998

2000

2002

2004

2006

2008

2010

2012

0

10

20

30

40

50

60

70 PV Exist. World Cap., GW Papers MPPT, pcs

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Main applications of PV

Stand-alone (off-grid) Uses: remote region (remote wireless sensors,

small chargers, navigation lights, etc) or when on-grid connection is unnecessary.

Contains: storage battery and converter (DC-DC, DC-AC), maximum power point tracker (MPPT).

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Main applications of PV

Grid-connected (on-grid) Uses: connected to local electricity network. Contains: converter (DC-AC), may not have

storage, maximum power point tracker (MPPT).

Fed-in tariff (0.2…0.48 €/kWh, biggest tariff in the world – 0.48 €/kWh in Ukraine).

© Ernő Paál, Zoltán Tatai. 2010.

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Maximum power point of the PV

0.1

0.2

0.3

IPV, A

0 4 8 12 VPV, V P, W

1

2

3

0 4 8 12 VPV, V

1/RL1

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Current-voltage dependence of the PV

0.1

0.2

0.3

IPV, A

MPP

0 4 8 12 VPV, V

S=1000 W/m2, Т=25°С

S=500 W/m2, Т=25°С

S=100 W/m2, Т=25°С

P, W

1

2

3

0 4 8 12 VPV, V

S=1000 W/m2, Т=25°С

S=500 W/m2, Т=25°С

S=100 W/m2, Т=25°С

0.1

0.2

0.3

IPV, A

4 8 12 VPV, V

S=1000 W/m2, Т=25°С

S=1000 W/m2, Т=45°С

S=1000 W/m2, Т=65°С

0.1

0.2

0.3

IPV, A

4 8 12 VPV, V

S=1000 W/m2, Т=25°С

S=1000 W/m2, Т=45°С

S=1000 W/m2, Т=65°С

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Maximum power point tracker

Buck-converter

MPPT controller

VPV

IPV

PWM

MPPT

Load PV-array

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Let’s start!

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Schematic design

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Simulation in progress

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PCB 2D design

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PCB 3D design

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Exposure

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Chemical operations

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In-operation control

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Development

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Final quality verification

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Mounting holes drilling

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In the storage room

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Soldering equipment

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Soldering

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We’ve made it!

Pin spacing – 0.5 mm!!!

Pin width – 0.3 mm!!!

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Boards are completed!

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Installation in progress

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Tuning

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Useful stuff

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Coding and debugging

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Development of the control program

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Load characteristic (Vout vs. Iout) of the buck-converter

0 2 4 6 8

5

10

15

20

Iout, A

Vo

ut,

V

Vout=5 VVout=14 VVout=20 V

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Efficiency characteristics of the buck-converter

0 2 4 6 80.4

0.5

0.6

0.7

0.8

0.9

1

Iout, A

Effi

cie

ncy

Vout=5 VVout=14 VVout=20 V

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Efficiency characteristics of the buck-converter

0 200 400 600 800 1000 1200 14000.6

0.65

0.7

0.75

0.8

0.85

0.9

0.95

1

Frequency, kHz

Effi

cie

ncy

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We appreciate your help!

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Final presentation

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Awarding certificates

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Special thanks to:

Our supervisor - Yuriy Vagapov. Staff – Roy Harper and Dez Adams. International Centre – Olga Edvards and

other staff.