EPE Association: NORpie 2008 - Topic 02: INDUSTRIAL APPLICATIONS

NORpie 2008 - Topic 02: INDUSTRIAL APPLICATIONS
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2008 > NORpie 2008 - Topic 02: INDUSTRIAL APPLICATIONS

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   Design of Master Control Unit for Laboratory Prototype of Traction Converter for Locomotives
By Jan Å½Ã¡k, ZdenÄ›k Peroutka, Seppo J. Ovaska [View]
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Abstract: This paper deals with the prototype of a main traction converter with medium-frequency transformer for AC trolley wire-fed locomotives. The attention is paid to the new master control and diagnostic unit. The designed master control unit has been implemented in the LabVIEW environment. Our master control unit ensures an effective human interface between a user and the control hardware. In this case, the master unit makes possible both extensive control and diagnostic operations of the laboratory prototype of the traction converter. The master unit was tested extensively by experiments performed on a designed traction converter prototype of 12-kW rated power.

   Reference Signal Generator for Active Power Filters Using MGP-FIR filter Designed by Evolutionary Programming
By TomÃ¡Å¡ Komrska, Seppo J. Ovaska [View]
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Abstract: This paper describes a high-performance reference signal generator for active power filters extracting the fundamental signal component from distorted current signals. In order to achieve high-quality output as well as computationally effective algorithm, the generator employs an adaptive and predictive MGP-FIR (Multiplicative General Parameter) bandpass filter designed by evolutionary programming. Detailed procedures of MGP-FIR filtering and evolutionary optimization are first discussed; theoretical conclusions are verified by illustrative simulation results.

   Designing Maximum Length Sequence Signal for Frequency Response Measurement of Switched Mode Converters
By Matti Vilkko, Tomi Roinila [View]
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Abstract: Switched mode power converters are extensively used in powering consumer products. Requirements of short time-to-market and low bill of materials set new challenges to designers. The designers should efficiently create stable and robust designs using low-cost components with high parameter variations. Methods to test statistically the dynamical properties of final design would enable the designers to evaluate control design before production ramp-up. However, currently available testing methods require intervention into internal circuitry or are time consuming and too laborious. This paper describes how Maximum Length Binary Sequences can be used to obtain a high through-put frequency response measurement method to analyze the dynamics of switched mode converters. Some well known computational methods for the frequency response calculation are listed and the design of an appropriate maximum length excitation signal is presented. The proposed signal design procedure takes time-aliasing effect, noise reduction, and the disturbing harmonics generated by pulse width modulation of the converter controller into consideration. The results are verified by experimental measurements from a high-frequency switched mode converter.

NORpie 2008 - Topic 02: INDUSTRIAL APPLICATIONS
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2008 > NORpie 2008 - Topic 02: INDUSTRIAL APPLICATIONS
	[return to parent folder]

	Design of Master Control Unit for Laboratory Prototype of Traction Converter for Locomotives By Jan Å½Ã¡k, ZdenÄ›k Peroutka, Seppo J. Ovaska	[View] [Download]
Abstract: This paper deals with the prototype of a main traction converter with medium-frequency transformer for AC trolley wire-fed locomotives. The attention is paid to the new master control and diagnostic unit. The designed master control unit has been implemented in the LabVIEW environment. Our master control unit ensures an effective human interface between a user and the control hardware. In this case, the master unit makes possible both extensive control and diagnostic operations of the laboratory prototype of the traction converter. The master unit was tested extensively by experiments performed on a designed traction converter prototype of 12-kW rated power.

	Reference Signal Generator for Active Power Filters Using MGP-FIR filter Designed by Evolutionary Programming By TomÃ¡Å¡ Komrska, Seppo J. Ovaska	[View] [Download]
Abstract: This paper describes a high-performance reference signal generator for active power filters extracting the fundamental signal component from distorted current signals. In order to achieve high-quality output as well as computationally effective algorithm, the generator employs an adaptive and predictive MGP-FIR (Multiplicative General Parameter) bandpass filter designed by evolutionary programming. Detailed procedures of MGP-FIR filtering and evolutionary optimization are first discussed; theoretical conclusions are verified by illustrative simulation results.

	Designing Maximum Length Sequence Signal for Frequency Response Measurement of Switched Mode Converters By Matti Vilkko, Tomi Roinila	[View] [Download]
Abstract: Switched mode power converters are extensively used in powering consumer products. Requirements of short time-to-market and low bill of materials set new challenges to designers. The designers should efficiently create stable and robust designs using low-cost components with high parameter variations. Methods to test statistically the dynamical properties of final design would enable the designers to evaluate control design before production ramp-up. However, currently available testing methods require intervention into internal circuitry or are time consuming and too laborious. This paper describes how Maximum Length Binary Sequences can be used to obtain a high through-put frequency response measurement method to analyze the dynamics of switched mode converters. Some well known computational methods for the frequency response calculation are listed and the design of an appropriate maximum length excitation signal is presented. The proposed signal design procedure takes time-aliasing effect, noise reduction, and the disturbing harmonics generated by pulse width modulation of the converter controller into consideration. The results are verified by experimental measurements from a high-frequency switched mode converter.