EPE Association: EPE 1999 - Topic 02d: Emerging Topologies

EPE 1999 - Topic 02d: Emerging Topologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 02: POWER ELECTRONICS CONVERTER CIRCUITS > EPE 1999 - Topic 02d: Emerging Topologies

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   A 3-Phase Sinusoidal Current Rectifier with 3 Unidirectional Swit...
By D.O. Neacsu; C. Gitlan; L. Gitlan [View]
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Abstract: This paper introduces a new three-phase AC/DC converter equipped with three unidirectional switches, three diodes and one line transformer only. By a special connection of theline transformer, the current at each converter branch input is positive only. This reduces the power devices number to a transistor and a diode for each converter branch. the paper presents the converter design and describes both hardware and control particularities. the performance of the proposed converter is discussed in comparison with other tree-phase utility interfaces by the help of PSPICE simulations.

   A New Design of Commutation Cell for AC/AC Conversion
By T. Lequeu; J. Mathias; B. Cheron; L. Gonthier [View]
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Abstract: Single phase AC/AC converters need bi-directional forced commutation switches. This paper deals with a new concept for the design of a 'self-turn-on' switch and a low on-state voltage bi-controllable switch. Thus, the control is simplified and the power elements can be integrated in Power Integration Technology such as ASD (TM) products. Experimental result validate this new principle. Harmonics improvement can be realized because of the bi-controllable switch.

   A New Multilevel Inverter Topology with a Hybrid Approach
By B.-S. Suh; Y-H. Lee; D-S Hyun; T.A. Lipo [View]
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Abstract: This paper presents some novel cascade multilevel inverter approach for high voltage and high power inverter applications. It is based on the series connection of the half and full bridge inverter cells. With the conventional cascade H-bridge multilevel inverters composed of the only full bridge inverter cells, an even level-system can not be obtained, which may cause some limitation in selecting the switching devices and the number of inverter levels regarding maximum inverter output voltage magnitude. The proposed configuration allows any kinds of even-level inverters leading to utilizing all of the levels like the diode-clamped multilevel inverter circuit, having inherent advantages of the cascade H-bridge inverters. Structural and operational characteristics are discussed and also an effective carrierwave-based space vector PWM scheme is given for ac drive applications. Validity of the proposed circuit and effectiveness of the PWM method are verified by some simulation and experimental results.

   Novel Topology for Four Quadrant Converter
By P. Coulibaly; F. Iturriz; T. Meynard; F. Bordry; J.P. Burnet; A. Dupaquier [View]
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Abstract: Particle accelerators, like the LHC (Large Hadron Collider), make use of true bipolar power converters to feed superconducting magnets. Moreover, the LHC imposes that most converters must be installed underground. This constraint leads to the necessity of a high efficiency and a reduced volume for all the power converters. In this paper, the authors present a novel four-quadrant topology composed by an association of a ZVS-inverter and a ZCS-rectifier. This DC-AC-DC converter is fully reversible and a soft-switching operation mode is achieved for all switches over the full operating range. After a thorough analysis of the prototype design [±600A, ±10V], simulation and experimental results confirm the general performance of this power structure.

EPE 1999 - Topic 02d: Emerging Topologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 02: POWER ELECTRONICS CONVERTER CIRCUITS > EPE 1999 - Topic 02d: Emerging Topologies
	[return to parent folder]

	A 3-Phase Sinusoidal Current Rectifier with 3 Unidirectional Swit... By D.O. Neacsu; C. Gitlan; L. Gitlan	[View] [Download]
Abstract: This paper introduces a new three-phase AC/DC converter equipped with three unidirectional switches, three diodes and one line transformer only. By a special connection of theline transformer, the current at each converter branch input is positive only. This reduces the power devices number to a transistor and a diode for each converter branch. the paper presents the converter design and describes both hardware and control particularities. the performance of the proposed converter is discussed in comparison with other tree-phase utility interfaces by the help of PSPICE simulations.

	A New Design of Commutation Cell for AC/AC Conversion By T. Lequeu; J. Mathias; B. Cheron; L. Gonthier	[View] [Download]
Abstract: Single phase AC/AC converters need bi-directional forced commutation switches. This paper deals with a new concept for the design of a 'self-turn-on' switch and a low on-state voltage bi-controllable switch. Thus, the control is simplified and the power elements can be integrated in Power Integration Technology such as ASD (TM) products. Experimental result validate this new principle. Harmonics improvement can be realized because of the bi-controllable switch.

	A New Multilevel Inverter Topology with a Hybrid Approach By B.-S. Suh; Y-H. Lee; D-S Hyun; T.A. Lipo	[View] [Download]
Abstract: This paper presents some novel cascade multilevel inverter approach for high voltage and high power inverter applications. It is based on the series connection of the half and full bridge inverter cells. With the conventional cascade H-bridge multilevel inverters composed of the only full bridge inverter cells, an even level-system can not be obtained, which may cause some limitation in selecting the switching devices and the number of inverter levels regarding maximum inverter output voltage magnitude. The proposed configuration allows any kinds of even-level inverters leading to utilizing all of the levels like the diode-clamped multilevel inverter circuit, having inherent advantages of the cascade H-bridge inverters. Structural and operational characteristics are discussed and also an effective carrierwave-based space vector PWM scheme is given for ac drive applications. Validity of the proposed circuit and effectiveness of the PWM method are verified by some simulation and experimental results.

	Novel Topology for Four Quadrant Converter By P. Coulibaly; F. Iturriz; T. Meynard; F. Bordry; J.P. Burnet; A. Dupaquier	[View] [Download]
Abstract: Particle accelerators, like the LHC (Large Hadron Collider), make use of true bipolar power converters to feed superconducting magnets. Moreover, the LHC imposes that most converters must be installed underground. This constraint leads to the necessity of a high efficiency and a reduced volume for all the power converters. In this paper, the authors present a novel four-quadrant topology composed by an association of a ZVS-inverter and a ZCS-rectifier. This DC-AC-DC converter is fully reversible and a soft-switching operation mode is achieved for all switches over the full operating range. After a thorough analysis of the prototype design [±600A, ±10V], simulation and experimental results confirm the general performance of this power structure.