PVMD Olindo Isabella Delft University of Technology Plane of array - - PowerPoint PPT Presentation

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PVMD Olindo Isabella Delft University of Technology Plane of array - - PowerPoint PPT Presentation

Introduction to Electrical Conversion PVMD Olindo Isabella Delft University of Technology Plane of array PV modules irradiance Fluid-dynamic model q convection T ambient T sky q rad,sky q convection q sun Meteo data q rad,ground T module T


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SLIDE 1

PVMD

Delft University of Technology

Introduction to Electrical Conversion

Olindo Isabella

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SLIDE 2

Energy yield Surrounding landscape PV modules Meteo data Plane of array irradiance Fluid-dynamic model

Tmodule qconvection Tambient qconvection qsun qrad,ground qrad,sky as θM Tground Tsky

Balance of System

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SLIDE 3

Outline V chapter

DC-DC converter

  • 1. Introduction to electrical conversion
  • 2. Electrical components
  • 3. Topologies
  • 4. Efficiency of a buck-boost converter

DC-AC inverter

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SLIDE 4

Outline V chapter

DC-DC converter

  • 1. Introduction to electrical conversion
  • 1. Motivation
  • 2. Definitions
  • 3. Requirements
  • 2. Electrical components
  • 3. Topologies
  • 4. Efficiency of a buck-boost converter

DC-AC inverter

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SLIDE 5

Solar cell with a Resistive Load

Voltage [V] Current [A] V I

200 W/m2 400 W/m2 600 W/m2 1000 W/m2 800 W/m2

Operating points MPPs

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SLIDE 6

DC-DC Converter

VPV VL

VPV = VL

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SLIDE 7

DC-DC Converter

VPV VL

VPV = VL

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SLIDE 8

Implementing the MPPT

VPV VL IPV ILoad Other input Rmeas MPPT

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SLIDE 9

The Ideal DC-DC converter

VPV IPV ILoad Ideal DC-DC converter Ideal impedance transformer VL

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SLIDE 10

The Ideal DC-DC converter

t V VLoad

D ≜ Ton Ts ⇒ Ton = DTs Toff = (1 − D)Ts

TS Ton Toff VPV

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SLIDE 11

DC-DC Converter

Topologies:

  • Buck converter
  • Boost converter
  • Buck-Boost

Electronic circuit which converts a source of direct current (DC) from one voltage level to another