انجام پروژه متلب | متلبی

کد مقاله g199
عنوان مقاله:

Design and Simulation of three phase Inverter for grid connected Photovoltic systems

سال ارائه:  2012       نوع مقاله: ژورنال                                  گزارش فارسی: دارد
کلید واژه : VSI Inverter, PLL, d-q refrance frame, grid connected system

Abstract— Grid connected photovoltaic (PV) systems feed
electricity directly to the electrical network operating parallel to
the conventional source. This paper deals with design and
simulation of a three phase inverter in MATLAB SIMULINK
environment which can be a part of photovoltaic grid connected
systems. The converter used is a Voltage source inverter (VSI)
which is controlled using synchronous d-q reference frame to
inject a controlled current into the grid. Phase lock loop (PLL) is
used to lock grid frequency and phase. The design of low pass
filter used at the inverter output to remove the high frequency
ripple is also discussed and the obtained simulation results are
presented.
Keywords- VSI Inverter, PLL, d-q refrance frame, grid
connected system

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کد مقاله g93
عنوان مقاله:

SIMULATION OF D-STATCOM AND DVR IN POWER SYSTEMS

سال ارائه:  2007       نوع مقاله: ژورنال                                     گزارش فارسی: ندارد

کلید واژه:D-Statcom, DVR, voltagedips, swells,interruption,power quality, VSC, پروژه متلب , شبیه سازی با متلب ,

ABSTRACT
A Power quality problemis an occurrence manifestedas a nonstandard voltage, current or frequency that results
ina failure or a mis-operation ofend user equipments. Utilitydistribution networks, sensitive industrial loads and critical
commercialoperations suffer fromvarious types of outages and service interruptionswhich can costsignificantfinancial
losses. Withthe restructuringof power systems and with shifting trend towards distributed and dispersed generation, the
issue ofpower quality is goingto takenewer dimensions. In developing countries like India, where the variationof power
frequency and manysuch other determinants of power quality are themselves a seriousquestion, it is very vital totake
positive steps inthis direction .Thepresent work is toidentify the prominent concernsin this area and hence the measures
that can enhance the quality ofthe power are recommended.
This work describes the techniques ofcorrectingthe supply voltagesag,swell andinterruption in a distributed
system. At present, a wide range of veryflexible controllers, which capitalize on newly available power electronics
components, are emerging for custompower applications. Among these, the distribution staticcompensator and the
dynamic voltage restorerare mosteffective devices, both of thembased on the VSC principle. A DVR injects a voltage in
series with the systemvoltage anda D-STATCOMinjectsacurrentintothe systemtocorrectthe voltage sag, swell and
interruption. Comprehensive results are presented to assessthe performance of each device as a potential custompower
solution.
Keywords: D-Statcom, DVR, voltagedips, swells,interruption,power quality, VSC.

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کد مقاله g124

عنوان اصلی مقاله :

Analysis and Simulation of a D-STATCOM for Voltage Quality Improvement

تجزیه و تحلیل و شبیه سازی D-STATCOM برای بهبود کیفیت ولتاژ

سال ارائه:  2011       نوع مقاله:journal        گزارش فارسی: دارد 

کلید واژه:

Power Quality, Energy Storage System (ESS), D-STATCOM, Voltage Flicker, Synchronous Reference Frame (SRF)., پروژه متلب , شبیه سازی با متلب ,

Abstract:Voltage flicker is a major power quality concern for both power companies and customers.
This paper discusses the dynamic performance of a (D-STATCOM) with ESS for mitigation of voltage
flicker. The (D-STATCOM) is intended to replace the widely used static var compensator (SVC). A
Distribution Static Synchronous Compensator (D-STATCOM) is used to regulate voltage on a 25-kV
distribution network. The (D-STATCOM) protects the utility transmission or distribution system from
voltage sag and /or flicker caused by rapidly varying reactive current demand. The (D-STATCOM)
regulates bus voltage by absorbing or generating reactive power. This voltage is provided by a voltage
sourced PWM inverter. The simulation is carried out using MATLAB/SIMULINK and the simulation
results illustrate the performance of (D-STATCOM) in mitigation of voltage flicker.
Key words:Power Quality, Energy Storage System (ESS), D-STATCOM, Voltage Flicker,
Synchronous Reference Frame (SRF).

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کد مقاله g136
عنوان مقاله:

A D-STATCOM Scheme using Power Quality Improvement in Power System

سال ارائه:  2012                 نوع مقاله: ژورنال                            گزارش فارسی: دارد

کلید واژه :  D-STATCOM, PWM Inverter, SVC, Power Quality., پروژه متلب , شبیه سازی با متلب ,

Abstract- D-STATCOM (Distribution Static Compensator) is a
play vary vital role in a Distribution system. D-STATCOM
used for reactive power compensation and load balancing and
it’s including power factor (PF) correction, voltage regulation,
and harmonic filtering in distribution network. Thispaper pre
sent the analysis of reactive power compensate, D-STATCOM
is based on power electronic equipment at the reliable opera
tion and power quality improving with power flowsin large
voltage distribution system using D-STATCOM. An electronics
-based PWM inverter control operation has been developed the
voltage and current measurements and reactive power meas
urements are required. The operation of the reactive power
control is presented for D-STATCOM.
Keywords: D-STATCOM, PWM Inverter, SVC, Power Quality.

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