EPE Association: NORpie 2006 - Topic 01: Converters

NORpie 2006 - Topic 01: Converters
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2006 > NORpie 2006 - Topic 01: Converters

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   A Compact High-Current DC Motor Drive
By T. Tahlman; E. Tahlman [View]
[Download]

Abstract: This paper details the design process and the stages of construction of a 12V 5.5A DC motor drive on a very small 1.5 inches by 1.5 inches printed circuit board. The relatively smallsize but high power dc motor drive may open door to a wide spectrum of industrial electronic applications. The tiny size was made possible by the latest technology in power electronics for integrated dc motor drive technology and was aimed to improve overall efficiency of the dc motor drive circuit. A laboratory prototype was built and loading tests and measurements were conducted. The results of these tests and measurements will also be presented in this paper.

   A 500-W Transformer-Less Efficient Universal Wide-Range Power Factor Preregulator
By A. Jensen; L. Petersen; M.A.E. Andersen [View]
[Download]

Abstract: This paper introduces the Transformer-Less E- cient Wide-Range PFC converter. An analysis is given, highlighting the component stresses to be expected and describing advantages over other traditionally employed topologies. Components are selected, and a control system is chosen for controlling the switch operation. Practical performance is tested experimentally and turns out to satisfy requirements.

   A small-signal model of the hysteretic comparator in linear-carrier self-oscillating switch-mode controllers
By M.C.W. Høyerby; M.A.E. Andersen [View]
[Download]

Abstract: This paper presents a small-signal model for the hysteretic comparator, a vital but not very well-understood component often used in controllers for high-performance switching power converters. It will be shown that comparator/power stage delay is the key limiting factor on loop gain in linear-carrier hysteretic controllers, which is ideally infinite at DC. The reasoning behind the model is explained, and the model is verified against simulated and measured gain-phase plots. The presented model allows precise calculation of the LF loop gain in the linear-carrier class of self-oscillating hysteretic controllers, which is particularly useful in the design of switching amplifiers.

   Grid-connected Z-source inverter with resonant controller
By J. Rabkowski [View]
[Download]

Abstract: The paper presents a single-phase Z-source inverter operating as an interface between DC voltage source and supply network. Basic issues of the new type of inverter are described with respect to selection of DC voltages levels. New control scheme for Z-source inverter is introduced: parallel structure of the resonant controller is used to obtain sinusoidal AC current. The paper provides both simulation and laboratory test results of grid connected single-phase Z-source inverter.

   A Novel EMI Reduction Design Scheme for Continuous Mode PFC Converters
By S. Basu; T. M. Undeland [View]
[Download]

Abstract: This paper explores the effect of radiated fields from the boost inductor on the overall EMI performance of a CCM PFC converter. By making extensive measurements on a 100 W prototype PFC Converter operating at about 70 kHz, a novel design approach is proposed by which it is possible to significantly reduce conducted EMI.

NORpie 2006 - Topic 01: Converters
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2006 > NORpie 2006 - Topic 01: Converters
	[return to parent folder]

	A Compact High-Current DC Motor Drive By T. Tahlman; E. Tahlman	[View] [Download]
Abstract: This paper details the design process and the stages of construction of a 12V 5.5A DC motor drive on a very small 1.5 inches by 1.5 inches printed circuit board. The relatively smallsize but high power dc motor drive may open door to a wide spectrum of industrial electronic applications. The tiny size was made possible by the latest technology in power electronics for integrated dc motor drive technology and was aimed to improve overall efficiency of the dc motor drive circuit. A laboratory prototype was built and loading tests and measurements were conducted. The results of these tests and measurements will also be presented in this paper.

	A 500-W Transformer-Less Efficient Universal Wide-Range Power Factor Preregulator By A. Jensen; L. Petersen; M.A.E. Andersen	[View] [Download]
Abstract: This paper introduces the Transformer-Less E- cient Wide-Range PFC converter. An analysis is given, highlighting the component stresses to be expected and describing advantages over other traditionally employed topologies. Components are selected, and a control system is chosen for controlling the switch operation. Practical performance is tested experimentally and turns out to satisfy requirements.

	A small-signal model of the hysteretic comparator in linear-carrier self-oscillating switch-mode controllers By M.C.W. Høyerby; M.A.E. Andersen	[View] [Download]
Abstract: This paper presents a small-signal model for the hysteretic comparator, a vital but not very well-understood component often used in controllers for high-performance switching power converters. It will be shown that comparator/power stage delay is the key limiting factor on loop gain in linear-carrier hysteretic controllers, which is ideally infinite at DC. The reasoning behind the model is explained, and the model is verified against simulated and measured gain-phase plots. The presented model allows precise calculation of the LF loop gain in the linear-carrier class of self-oscillating hysteretic controllers, which is particularly useful in the design of switching amplifiers.

	Grid-connected Z-source inverter with resonant controller By J. Rabkowski	[View] [Download]
Abstract: The paper presents a single-phase Z-source inverter operating as an interface between DC voltage source and supply network. Basic issues of the new type of inverter are described with respect to selection of DC voltages levels. New control scheme for Z-source inverter is introduced: parallel structure of the resonant controller is used to obtain sinusoidal AC current. The paper provides both simulation and laboratory test results of grid connected single-phase Z-source inverter.

	A Novel EMI Reduction Design Scheme for Continuous Mode PFC Converters By S. Basu; T. M. Undeland	[View] [Download]
Abstract: This paper explores the effect of radiated fields from the boost inductor on the overall EMI performance of a CCM PFC converter. By making extensive measurements on a 100 W prototype PFC Converter operating at about 70 kHz, a novel design approach is proposed by which it is possible to significantly reduce conducted EMI.