Three Phase Grid Connected PV SystemElijah
Toppo(P12EL002)Guide:Prof. Janak J. PatelPresentation Outline2 of
49World Energy Consumption, 1990 2040International Energy Outlook
2013Joules3 of 493
Renewables 2011Global Status Report4 of 49International Energy
Agency (2011)the development of affordable, inexhaustible and clean
solar energy technologies will have huge longer-term benefits. It
will increase countries energy security through reliance on an
indigenous, inexhaustible and mostly import-independent resource,
enhance sustainability, reduce pollution, lower the costs of
mitigating climate change, and keep fossil fuel prices lower than
otherwise. These advantages are global. Hence the additional costs
of the incentives for early deployment should be considered
learning investments; they must be wisely spent and need to be
widely shared5 of 49Typical Grid Connected PV system
6 of 49Photovoltaic Cell
7 of 49
PV Cell Equivalent Model
8 of 49
Photovoltaic Array9 of 49Effect of Irradiation
10 of 49Effect of Irradiation
11 of 49Effect of Temperature
12 of 49Effect of Temperature
13 of 49Boost Converter
14 of 49Maximum Power Point TrackingPower depends on Irradiance,
temperature, shadowing conditions, etc.Non-linear characteristicLow
Power conversion ratioMaximum Power Transfer (Impedance
matching)AlgorithmsConstant Voltage TrackingPerturb and ObserveHill
ClimbingIncremental Conductance
15 of 49Maximum Power Point Tracking
16 of 49Incremental Conductance Method
17 of 49Incremental Conductance Method
18 of 4918
Incremental Conductance Method19 of 49Simulation of MPPT
20 of 49Results of simulation
21 of 49Grid SynchronizationFrequency and Phase of Grid
VoltageQuick response to changes in utility phaseRejection of noise
and higher order harmonicsExamples: ZCD, arc tan function, PLL
22 of 49Synchronous Reference Frame - PLL
23 of 49Synchronous Reference Frame - PLL
24 of 49DC-link Voltage Control
25 of 49Current Control
Decoupling Control block26 of 49Current Decoupling
27 of 49Current Decoupling Block
28 of 49Space Vector Modulation
29 of 49Space Vector Modulation
30 of 49Hardware Implementation31 of 49Hardware Setup Solar
Panel
32 of 49Hardware Setup Boost Converter
33 of 49MATLAB Graphical User Interface
34 of 49Block Diagram of Grid Side Inverter Control
35 of 49Image of Hardware Setup
36 of 49Hardware Setup Power Supply PCB
37 of 49Hardware Setup Gate Driver
38 of 49Voltage Sensing Circuit
39 of 49Current Sensing Circuit
40 of 49Flowchart of Program
41 of 49Results Sensed Voltage
42 of 49Results SRF PLL
43 of 49Results SVM
44 of 49Results Transformer Primary Voltages
45 of 49Future WorkIntegrating the PV system (Panel, Boost
Converter with MPPT) and the Grid-side inverterSophisticated grid
synchronization methods which work with unbalanced grids, high
harmonic content, etc.Feeding only active power into the grid, i.e.
at unity power factorIslanding techniquesProtection systemDifferent
operating mode for handling grid faultsRuggedized product with
Human Machine Interface (HMI) for commercial purpose46 of
49References
47 of 49References
48 of 49References
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