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8/12/2019 Improvement of Power Quality of a Distributed Generation Power With Dc Storage and Svpwm Technique
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IMPROVEMENT OF POWER QUALITY O
DISTRIBUTED GENERATION POWER W
DC STORAGE AND SVPWM TECHNIQU
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ABSTRACT:
The aim of this work is to improve the power quality for dis
generation (DG) with power storage system. Here DG is assumed to
wind power generation (WG) and fuel cells (FC), etc. Advantages
system are constant power supply, constant voltage magnitude, abs
harmonics in supply voltage, un-interrupted power supply by using DC
and SVPWM technique. In this project the electric power qualities in tw
will be compared.
Case I: With the storage battery when it is introduced.
Case ii: Without the storage battery.
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INTRODUCTIONOne of the major concerns in electricity industry today is
quality problems to sensitive loads. Presently, the majority of power
problems are due to different fault conditions.
These conditions cause : Voltage sag
a. Tripping
b. Shutdown
c. Miss process of drive system
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1. Wind generator:
2. Fuel cell module:
3.Energy storage unit:
4. SVPWM inverter:
5. Voltage source converter (VSC):
6. Dc/dc converter:
7. Passive filters:
8. 3-phase voltage injection transformers:
THE PROPOSED SYSTEM CONSISTS
FOLLOWING MAIN SECTIONS:
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BLOCK DIAGRAM OF PROPOSED SYS
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THREE PHASE VOLTAGE SOURCE INV
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Space vector pulse width
modulation
Valid switching states
VSI
OPERATION OF VOLTAGE SOURCE INVE
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SPACE VECTOR MODULATION OUTPUT
Output voltage vector in the pla
Output line voltages in time
domain
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MATLAB MODELLING & SIMULATION R
1. Simulation models: with storage
battery2. Simulation mod
storage bat
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SIMULATION RESULTS
Variations in the load
voltage with
fluctuating rlc load
Output wave forms of
voltages when battery
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CONCLUSION
Based on the analysis of test system, it is suggested that volt
are major factors in estimating the DC storage value. The effectiveness
system mainly depends upon the rating of DC storage rating and th
voltage sag. The major role play is that it can be supply constant pow
loads, sag is reduced completely, THD of the system is very less. Th
implementation can be applied to various kinds of loads and systems in f
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Thankyou