EPE Association: EPE 2011 - LS4d: Topic 16: Converter Control in FACTS Applications

EPE 2011 - LS4d: Topic 16: Converter Control in FACTS Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 16: Power electronics in transmission and distribution > EPE 2011 - LS4d: Topic 16: Converter Control in FACTS Applications

   [return to parent folder]

   A review on synchronization methods for grid-connected three-phase voltage-source converters under unbalanced and distorted grid conditions
By Maialen BOYRA, Jean-Luc THOMAS [View]
[Download]

Abstract: The requirements for grid-connected voltage source converters (VSC) are increasing with the evolution towards smartgrids. In this context, synchronization methods for VSC have become a key feature for a fast and reliable control. The first synchronization methods, which were originally dedicated for communication applications have been gradually adapted to power systems applications and, today, an extensive collection of techniques exist. Although partial reviews and comparisons exist, a comprehensive classification of these approaches is needed. This paper presents an all-embracing survey of synchronization methods for grid-connected series and shunt VSC applications.

   Critical Evaluation of FBD, PQ and Generalized Non-Active Power Theories
By Fan XU, Leon TOLBERT, Yan XU [View]
[Download]

Abstract: Due to the widespread use of non-sinusoidal, non-periodic loads and the existence of distortedvoltages, many definitions of non-active power for non-sinusoidal and non-periodic waveforms havebeen formulated. This paper investigates the major similarities and discrepancies of three non-activepower theories which are widely used in control algorithms for shunt compensation systems. The threeapproaches are FBD, PQ and generalized non-active power theories. The evaluation and comparisonof these three theories as the non-active power compensation strategies for single-phase system, threephasesystem with unbalanced load, sub-harmonic load, and distorted system voltage will be includedin this paper. The conclusions are based on both the simulation and the experimental results ofdifferent compensation objectives.

   FREQUENCY SWITCHING ANALYSIS OF AN iUPQC WITH HARDWARE IN-THE-LOOP DEVELOPMENT TOOL
By Bruno FRANÇA, Mauricio AREDES, Luis Guilherme ROLIM [View]
[Download]

Abstract: This paper presents a frequency switching analysis of an interchanging topology of the Unified Power Quality Conditioner (iUPQC). It includes simulations with hardware-in-the-loop development tool, which allows the control code development (embedded in an actual fixed-point DSP) directly working in a simulated iUPQC (PSCAD/EMTDC simulator). The aim is to reduce the frequency switching of both series and shunt compensators, thus allowing the power rating increase of the converter with the same harmonic mitigation performance. Experimental results are provided for 10 kHz and 3 kHz frequency switching operation.

EPE 2011 - LS4d: Topic 16: Converter Control in FACTS Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 16: Power electronics in transmission and distribution > EPE 2011 - LS4d: Topic 16: Converter Control in FACTS Applications
	[return to parent folder]

	A review on synchronization methods for grid-connected three-phase voltage-source converters under unbalanced and distorted grid conditions By Maialen BOYRA, Jean-Luc THOMAS	[View] [Download]
Abstract: The requirements for grid-connected voltage source converters (VSC) are increasing with the evolution towards smartgrids. In this context, synchronization methods for VSC have become a key feature for a fast and reliable control. The first synchronization methods, which were originally dedicated for communication applications have been gradually adapted to power systems applications and, today, an extensive collection of techniques exist. Although partial reviews and comparisons exist, a comprehensive classification of these approaches is needed. This paper presents an all-embracing survey of synchronization methods for grid-connected series and shunt VSC applications.

	Critical Evaluation of FBD, PQ and Generalized Non-Active Power Theories By Fan XU, Leon TOLBERT, Yan XU	[View] [Download]
Abstract: Due to the widespread use of non-sinusoidal, non-periodic loads and the existence of distortedvoltages, many definitions of non-active power for non-sinusoidal and non-periodic waveforms havebeen formulated. This paper investigates the major similarities and discrepancies of three non-activepower theories which are widely used in control algorithms for shunt compensation systems. The threeapproaches are FBD, PQ and generalized non-active power theories. The evaluation and comparisonof these three theories as the non-active power compensation strategies for single-phase system, threephasesystem with unbalanced load, sub-harmonic load, and distorted system voltage will be includedin this paper. The conclusions are based on both the simulation and the experimental results ofdifferent compensation objectives.

	FREQUENCY SWITCHING ANALYSIS OF AN iUPQC WITH HARDWARE IN-THE-LOOP DEVELOPMENT TOOL By Bruno FRANÇA, Mauricio AREDES, Luis Guilherme ROLIM	[View] [Download]
Abstract: This paper presents a frequency switching analysis of an interchanging topology of the Unified Power Quality Conditioner (iUPQC). It includes simulations with hardware-in-the-loop development tool, which allows the control code development (embedded in an actual fixed-point DSP) directly working in a simulated iUPQC (PSCAD/EMTDC simulator). The aim is to reduce the frequency switching of both series and shunt compensators, thus allowing the power rating increase of the converter with the same harmonic mitigation performance. Experimental results are provided for 10 kHz and 3 kHz frequency switching operation.