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A simulation based case study for control of DSTATCOM.

Pradeep Kumar¹, Niranjan Kumar¹, A K Akella¹

¹Department of Electrical Engineering, National Institute of Technology Jamshedpur, Jharkhand 831014, India.

ISA Transactions

|March 25, 2014

Summary

This summary is machine-generated.

This study introduces a novel distribution static compensator (DSTATCOM) using a synchronous reference frame controller (SRFC) to enhance power quality by mitigating harmonics and improving the power factor in electrical distribution systems.

Keywords:

Custom power devices (CPD)Distribution static compensator (DSTATCOM)Synchronous reference frame (SRF)Voltage source converters (VSCs)

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Area of Science:

Electrical Engineering
Power Systems
Control Systems

Background:

Power quality issues, including harmonics and poor power factor, degrade the performance of three-phase four-wire distribution systems.
Nonlinear loads, whether current-source or voltage-source type, exacerbate these power quality problems.

Purpose of the Study:

To present a novel distribution static compensator (DSTATCOM) for improving power quality.
To address harmonics reduction and power factor correction in three-phase four-wire systems feeding nonlinear loads.

Main Methods:

Implementation of a DSTATCOM using a Pulse Width Modulation (PWM) current-controlled six-leg voltage source converter (VSC).
Generation of switching patterns via a synchronous reference frame controller (SRFC).
Validation through simulations of diode-rectifier and unbalanced R-L loads.

Main Results:

Significant reduction in harmonic spectrum of source current when DSTATCOM is applied.
Demonstrated effectiveness in power factor correction under various nonlinear load conditions.
Successful compensation of load current by the IGBT-based VSC.

Conclusions:

The SRFC-based DSTATCOM effectively improves power quality in three-phase four-wire distribution systems.
The proposed controller and VSC configuration provide a viable solution for mitigating harmonics and enhancing power factor.
The system's performance is validated for diverse nonlinear load scenarios.