EPE Association: EPE 1999 - Topic 10c: Power Conditioning, Power Factor Correction

EPE 1999 - Topic 10c: Power Conditioning, Power Factor Correction
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 10: SYSTEMS ENGINEERING > EPE 1999 - Topic 10c: Power Conditioning, Power Factor Correction

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   Active AC Line Conditioner for a Cogeneration System
By D. Casadei; G. Grandi; U. Reggiani; C. Rossi [View]
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Abstract: This paper deals with a cogeneration system which can produce electric energy from low pressure saturated steam or natural gas. The system consists of a high speed turbine coupled to a synchronous generator, which is connected to the A.C.-line by a power conditioning system. In this paper, a novel control strategy is proposed in order to provide not only the active power obtained from the mechanical side, but reactive power as well. In this way, the power conditioning system can also be efficiently used as active filter. This new feature reduces the pay back time without increasing the investment cost. The theoretical analysis of the control system is confirmed by computer simulations.

   Power Factor Compensation Techniques in Three Phase Four Wire Sys...
By J. Balcells; E. Aklabas; P. rodriguez; J.L. Romeral [View]
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Abstract: First, a geometrical interpretation of the Clarke transformation between abc and aB0 reference axes for voltages and currents is presented. Following, two possible power factor compensation strategies for three phase four wire non-sinusoidal unbalanced systems. The convenience of using abc or aB0 are discussed and the physical meaning of different power terms is discussed.

   Railway Passenger Coach Multi-System Feeding Converter
By A. Magzan; S. Marijan; J. Ungarov [View]
[Download]

Abstract: The paper deals with the requirements on multi-system converters concerning the supply network and with the concept of the developed multi-system converter. The operation of modern railway passenger coaches with respect to their influence on the supply network during steady state and dynamic condition is discussed. The paper presents the possibility to increase the input impedance and power factor. The concept of main controller unit hardware as well as the software environment for application program development is decribed.

   Single Phase 25 HZ Converter for New York Subway
By S.R. Jones; A. Mirzaian; P. Manuelle; C.B. Patel; E. Fish, [View]
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Abstract: The article will describe a static frequency converter;60Hz, three phase to 25Hz, single phase. This IGBT based converter supplies a signalling network used in the New York transit system and must be capable of withstanding various operational restraints such as, 25Hz signalling network short-circuits, non-linear loads and parallel operation with other sources.

   TCR Based Reactive Power Compensator with Low Harmonic Injection
By J.M. Cano; G.A. Orcajo; M.F. Cabanas; M.G. Melero [View]
[Download]

Abstract: Reactive power compensators have been extensively used from the start, in the history of electrical transmission and distribution. Nowadays, the rigid traditional capacitor banks are incorporating electronic systems that provide flexible reactive power flow. Thyristor Controlled Reactors have become popular in this context, not only in distribution systems but also at utility level. These nonlinear topologies produce harmonic distortion, which should be limited according to power transmission quality. A new topology with reduced harmonic injection is proposed and evaluated once the state of existing technology is reviewed.

EPE 1999 - Topic 10c: Power Conditioning, Power Factor Correction
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 10: SYSTEMS ENGINEERING > EPE 1999 - Topic 10c: Power Conditioning, Power Factor Correction
	[return to parent folder]

	Active AC Line Conditioner for a Cogeneration System By D. Casadei; G. Grandi; U. Reggiani; C. Rossi	[View] [Download]
Abstract: This paper deals with a cogeneration system which can produce electric energy from low pressure saturated steam or natural gas. The system consists of a high speed turbine coupled to a synchronous generator, which is connected to the A.C.-line by a power conditioning system. In this paper, a novel control strategy is proposed in order to provide not only the active power obtained from the mechanical side, but reactive power as well. In this way, the power conditioning system can also be efficiently used as active filter. This new feature reduces the pay back time without increasing the investment cost. The theoretical analysis of the control system is confirmed by computer simulations.

	Power Factor Compensation Techniques in Three Phase Four Wire Sys... By J. Balcells; E. Aklabas; P. rodriguez; J.L. Romeral	[View] [Download]
Abstract: First, a geometrical interpretation of the Clarke transformation between abc and aB0 reference axes for voltages and currents is presented. Following, two possible power factor compensation strategies for three phase four wire non-sinusoidal unbalanced systems. The convenience of using abc or aB0 are discussed and the physical meaning of different power terms is discussed.

	Railway Passenger Coach Multi-System Feeding Converter By A. Magzan; S. Marijan; J. Ungarov	[View] [Download]
Abstract: The paper deals with the requirements on multi-system converters concerning the supply network and with the concept of the developed multi-system converter. The operation of modern railway passenger coaches with respect to their influence on the supply network during steady state and dynamic condition is discussed. The paper presents the possibility to increase the input impedance and power factor. The concept of main controller unit hardware as well as the software environment for application program development is decribed.

	Single Phase 25 HZ Converter for New York Subway By S.R. Jones; A. Mirzaian; P. Manuelle; C.B. Patel; E. Fish,	[View] [Download]
Abstract: The article will describe a static frequency converter;60Hz, three phase to 25Hz, single phase. This IGBT based converter supplies a signalling network used in the New York transit system and must be capable of withstanding various operational restraints such as, 25Hz signalling network short-circuits, non-linear loads and parallel operation with other sources.

	TCR Based Reactive Power Compensator with Low Harmonic Injection By J.M. Cano; G.A. Orcajo; M.F. Cabanas; M.G. Melero	[View] [Download]
Abstract: Reactive power compensators have been extensively used from the start, in the history of electrical transmission and distribution. Nowadays, the rigid traditional capacitor banks are incorporating electronic systems that provide flexible reactive power flow. Thyristor Controlled Reactors have become popular in this context, not only in distribution systems but also at utility level. These nonlinear topologies produce harmonic distortion, which should be limited according to power transmission quality. A new topology with reduced harmonic injection is proposed and evaluated once the state of existing technology is reviewed.