EPE Association: EPE 2005 - Topic 15-4b

EPE 2005 - Topic 15-4b - DS: HVDC, FACTS
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 15: POWER ELECTRONICS IN TRANSMISSION AND DISTRIBUTION OF ELECTRICAL ENERGY > EPE 2005 - Topic 15-4b - DS: HVDC, FACTS

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   Application of A New Partly Unsymmetrical PWM Technique in Harmonic Compensators
By BRAUN Michael; ZHANG Hui [View]
[Download]

Abstract: AbstractIn this paper a new PWM technique with Optimized Pulse Pattern using Unsymmetrical Switching angles (OPUS) for low switching frequency is introduced. The calculation scheme of the OPUS technique and the control range of harmonics are presented. The technique is designed for use in an active power filter, by using as parallel compensation of the harmonic current or series compensation of the harmonic voltage separately. The successful operation is demonstrated by the simulation of a parallel compensator and a series compensator. The simulation results illustrate a good performance of the harmonics compensation. The technique is further validated by FFT analysis.

   Controlled active- and reactive-power flow unsing a DIPFC
By EBNER Guenter; HEROLD Gerhard [View]
[Download]

Abstract: In this paper a Dynamic Interphase Power Flow Controller (DIPFC) is described with a fundamental-component based model. The full expanded version of this FACTS- (Flexible Alternating Current Transmission System) type allows a decoupled exchange of active and reactive power between two arbitrary network nodes of the same voltage level. In a concrete example two 20 kV network nodes are coupled with a DIPFC, which is connected with two cables of 5 km length each. The results show the capability of power exchange in the case of a load angle of 60 degree between the termination points.

   Design, Analysis and Comparison of Multilevel Topologies for DSTATCOM Applications
By RODRIGUEZ Miguel ANgel; MARROYO Luis; BARRENA Jon Andoni; AURTENECHEA Sergio; CANALES Jose MariA [View]
[Download]

Abstract: The aim of this paper is to present a design method of two different DSTATCOM multilevel topologies which are suitable to be used connected to the distribution grid. These devices have been classically commutated at fundamental line-frequencies, but the evolution of Power Semiconductors has allowed to increase switching frequencies and the power ratings of these devices, permitting the use of PWM modulation techniques. This paper mainly focuses the design issues of the NPC and Cascaded H-bridge multilevel topologies for DSTATCOM applications, presenting a method for the dimensioning of the different elements that compose the device, paying special attention to the DC Bus capacitor sizing and output filter inductance sizing.

   Dynamic Damping in power electronics: Industrial cases
By DE PREVILLE Guillaume [View]
[Download]

Abstract: This paper presents the concept of dyamic damping of AC filter with the help of power electronics. From two industrial cases, (railways aplication and D-STATCOM applications) the dynamic damping is presented and extended to generalised AC filterings. It shows that the dynamic damping with the power electronics does not alter the filter's efficiency contrary to passive damping and the damping could be done with losses recovery thus with minimzing damping losses. The control of dynamic damping is also extended and the tuning of the AC filter could be automatically adjusted with the help of the voltage source converter. The paper present the concept of hybrid no resonant capacitor bank and hybrid dynamically damped low loss AC filter. Power electronics associated to AC fitler will bring the fucntions of damping with losses recovery and adjustment of the tuned frequency, giving birth to a new AC fitlering generation.

   High Efficiency SVG System using Open-Winding Transformer and Two Space Vector Modulated Inverters
By KAWABATA Takao; KAWABATA Yoshitaka; FUJII Yosuke [View]
[Download]

Abstract: This paper proposes a new high efficiency SVG system. In this proposed system, it is possible to realize good efficiency by combining a low switching frequency 3-level inverter, which supplies about 3/4 of the output power, and a high switching frequency 2-level inverter, which controls the waveforms.

   Hybrid Simulator of Cheju-Haenam HVDC System and Its Dynamic Performance Study
By LEE Hah; BYEON; KIM Cha; CHOO Ji [View]
[Download]

Abstract: This paper deals with the development of the simulator Cheju - Haenam HVDC system and its dynamic performance study and verify the control characteristics of the HVDC system. It discusses the simulator development requirement and criteria. It provides guidelines for developing the simulator and presents the results of the simulator.

EPE 2005 - Topic 15-4b - DS: HVDC, FACTS
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 15: POWER ELECTRONICS IN TRANSMISSION AND DISTRIBUTION OF ELECTRICAL ENERGY > EPE 2005 - Topic 15-4b - DS: HVDC, FACTS
	[return to parent folder]

	Application of A New Partly Unsymmetrical PWM Technique in Harmonic Compensators By BRAUN Michael; ZHANG Hui	[View] [Download]
Abstract: AbstractIn this paper a new PWM technique with Optimized Pulse Pattern using Unsymmetrical Switching angles (OPUS) for low switching frequency is introduced. The calculation scheme of the OPUS technique and the control range of harmonics are presented. The technique is designed for use in an active power filter, by using as parallel compensation of the harmonic current or series compensation of the harmonic voltage separately. The successful operation is demonstrated by the simulation of a parallel compensator and a series compensator. The simulation results illustrate a good performance of the harmonics compensation. The technique is further validated by FFT analysis.

	Controlled active- and reactive-power flow unsing a DIPFC By EBNER Guenter; HEROLD Gerhard	[View] [Download]
Abstract: In this paper a Dynamic Interphase Power Flow Controller (DIPFC) is described with a fundamental-component based model. The full expanded version of this FACTS- (Flexible Alternating Current Transmission System) type allows a decoupled exchange of active and reactive power between two arbitrary network nodes of the same voltage level. In a concrete example two 20 kV network nodes are coupled with a DIPFC, which is connected with two cables of 5 km length each. The results show the capability of power exchange in the case of a load angle of 60 degree between the termination points.

	Design, Analysis and Comparison of Multilevel Topologies for DSTATCOM Applications By RODRIGUEZ Miguel ANgel; MARROYO Luis; BARRENA Jon Andoni; AURTENECHEA Sergio; CANALES Jose MariA	[View] [Download]
Abstract: The aim of this paper is to present a design method of two different DSTATCOM multilevel topologies which are suitable to be used connected to the distribution grid. These devices have been classically commutated at fundamental line-frequencies, but the evolution of Power Semiconductors has allowed to increase switching frequencies and the power ratings of these devices, permitting the use of PWM modulation techniques. This paper mainly focuses the design issues of the NPC and Cascaded H-bridge multilevel topologies for DSTATCOM applications, presenting a method for the dimensioning of the different elements that compose the device, paying special attention to the DC Bus capacitor sizing and output filter inductance sizing.

	Dynamic Damping in power electronics: Industrial cases By DE PREVILLE Guillaume	[View] [Download]
Abstract: This paper presents the concept of dyamic damping of AC filter with the help of power electronics. From two industrial cases, (railways aplication and D-STATCOM applications) the dynamic damping is presented and extended to generalised AC filterings. It shows that the dynamic damping with the power electronics does not alter the filter's efficiency contrary to passive damping and the damping could be done with losses recovery thus with minimzing damping losses. The control of dynamic damping is also extended and the tuning of the AC filter could be automatically adjusted with the help of the voltage source converter. The paper present the concept of hybrid no resonant capacitor bank and hybrid dynamically damped low loss AC filter. Power electronics associated to AC fitler will bring the fucntions of damping with losses recovery and adjustment of the tuned frequency, giving birth to a new AC fitlering generation.

	High Efficiency SVG System using Open-Winding Transformer and Two Space Vector Modulated Inverters By KAWABATA Takao; KAWABATA Yoshitaka; FUJII Yosuke	[View] [Download]
Abstract: This paper proposes a new high efficiency SVG system. In this proposed system, it is possible to realize good efficiency by combining a low switching frequency 3-level inverter, which supplies about 3/4 of the output power, and a high switching frequency 2-level inverter, which controls the waveforms.

	Hybrid Simulator of Cheju-Haenam HVDC System and Its Dynamic Performance Study By LEE Hah; BYEON; KIM Cha; CHOO Ji	[View] [Download]
Abstract: This paper deals with the development of the simulator Cheju - Haenam HVDC system and its dynamic performance study and verify the control characteristics of the HVDC system. It discusses the simulator development requirement and criteria. It provides guidelines for developing the simulator and presents the results of the simulator.