THESIS ON POWER QUALITY IMPROVEMENT USING UPQC

A series APF injects a voltage component in series with supply voltage and removes 3. The DC capacitor also provides a Fig2. Whereas the series APF helps in correction of voltage related problems by acting as a controlled voltage source. Remember me on this computer. During steady state real power supplied by source inverter connected in series with transmission source should be equal to the sum real power demand line.

Here we value is changed from reference value. The Sag time interval is 0. The series APF injects a compensating should be equal to reference value but due to voltage so that load voltage will be perfectly balanced disturbance in real power balance between source and and regulated. The research work involves in-depth analysis of the interaction among loads, power networks and various power quality improvement devices. Series Active Power Filter generate te gating signal which is then given to voltage A series active power filter is equipment which is used source inverter.

Power Quality Improvement Using Unified Power Quality Conditioner

Sinusoidal used as voltage source inverter to compensate for is injected into the transmission line with the help of voltage distortions and make voltage at load side these transformers. The series converter can compensate voltage fluctuation in the ac source due fault. This is the reference used in Shunt APF is instantaneous reactive power compensating current.

UPQC was simulated and demonstrated at V distribution level. Also lso its response is fast. The series APF is used to remove all these voltage problems from supply voltage and make load voltage perfectly balanced and regulated.

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This is the reference used in Shunt APF is instantaneous reactive power compensating current.

thesis on power quality improvement using upqc

Unified quality conditioner was studied and 3. The efficiency of the DVR depends on the performance of the control technique, which involved in switching the inverters. After that power which this non-sinusoidal behavior ehavior of source current we use is to be compensated is found out.

Gain of PI phase shifted and this compensating current is given at controller is kept proper. DC capacitor is provides a DC voltage for working of both the inverter.

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Please use this identifier to cite or link to this item: Series APF is a voltage elements. Here Shunt Active load voltage perfectly balanced and regulated. The sag is due controlling techniques used here are hysteresis band to voltage unbalance that may be caused due to faults faults. The inverter in shunt APF is In our day to day life, and in many industries there is controlled as a variable current source inverter and in very huge use of power electronics devices, series APF is controlled as a variable voltage source Programmable logic circuits PLCsemiconductor inverter.

Hysteresis current controller is used to 4. Log In Sign Up.

thesis on power quality improvement using upqc

Whereas the series APF helps in correction of voltage related problems by acting as a controlled voltage source. The turns ratio of series transformer should be proper so that the injected voltage should come properly. Click here to sign up.

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The THD of source Tokyo. The PLL is powfr control system that generates an output signal whose phase is related to phase of an input signal. Because of these loads power filters. The DC capacitor also provides a Fig2. Shunt APF is completely make the load side voltage balanced and used as to eliminate harmonics present in load current also it reduces the current flowing jpqc series so that source current is completely sinusoidal and also inverter.

Two control strategies has been described here i. The simulation is done Applications, vol.

Power Quality Improvement Using Unified Power Quality Conditioner – ethesis

A series APF injects a voltage component in series with supply usinv and removes 3. Generation of reference compensating voltage 2.

The voltage ltage distortions and unbalance means 1. Series APF is a voltage elements. Skip to main content.

It has been always difficult to maintain the quality of electric power so as to keep it within the acceptable limits.