EPE Association: EPE 1993 - 02 - Lecture Session L1b: SOFT SWITCHING PWM AND HARMONICS

EPE 1993 - 02 - Lecture Session L1b: SOFT SWITCHING PWM AND HARMONICS
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   SILC: A NOVEL PHASE-SHIFTED PWM CONVERTER
By M. Legnani; P. Maranesi; G. Naummi [View]
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Abstract: A new phase-shifted power cell with its controller for the regulation of DC/DC converters is presented. The in-line disposition of the switches characterizes this topology, whence the name of Switch In-Line Converter (SILC). Besides the features of the phase-shifted converters already known, the SILC has some peculiar advantages duly illustrated in the paper. The experimental results of a prototype, which agree very well with the theoretical analysis, are reported.

   USE OF SOFT-SWITCHING PRINCIPLES IN PWM VOLTAGE INVERTERS DESIGN
By F. Forest; J. Gonzalez; F. Costa [View]
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Abstract: Soft-switching principles (ZCS-ZVS), classically used in DC-to-DC converters, are now introduced in voltage inverters, for medium or high frequency applications. This paper presents, in a first part, an attempt of state-of-the-art in this power conversion field where it appears that most of researchers are working on ZVS mode or mixed ZVS-ZCS mode. So, in the second part, authors propose ZCS solutions, allowing good operating conditions for devices such as IGBT. Experimental results on a 180A-20KHz inverter-leg supplied by 380V rectified mains with IGBT modules are presented. An original experimental test circuit allows a direct losses measurement and comparison between a classical PWM inverter-leg without snubber and the ZCS solution.

   State-Vector Feedback Control based High-Frequency Carrier PWM Power Conversion Amplifier with High-Precision Magnetic-Field Current-Tracking Scheme
By Hiroya Fukuda; Mutsuo Nakaoka [View]
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Abstract: This paper presents performance evaluations of a high-frequency (100kHz) carrier switched-mode PWM power conversion amplifier system for precise high-speed current-tracking control of electromagnetic circuit. lts computer-aided analysis and some design considerations are described on the basis of state-space averaging analysis and model matching method. The proposed power conditioning system technology is more acceptable for the current-regulated power supply of magnetic resonance imaging (MRI) machines, which requires analog-oriented unique highly-regulated power electronic circuit systems for the generation of magnetic-gradient fields.

EPE 1993 - 02 - Lecture Session L1b: SOFT SWITCHING PWM AND HARMONICS
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1993 - Conference > EPE 1993 - 02 - Lecture Session L1b: SOFT SWITCHING PWM AND HARMONICS
	[return to parent folder]

	SILC: A NOVEL PHASE-SHIFTED PWM CONVERTER By M. Legnani; P. Maranesi; G. Naummi	[View] [Download]
Abstract: A new phase-shifted power cell with its controller for the regulation of DC/DC converters is presented. The in-line disposition of the switches characterizes this topology, whence the name of Switch In-Line Converter (SILC). Besides the features of the phase-shifted converters already known, the SILC has some peculiar advantages duly illustrated in the paper. The experimental results of a prototype, which agree very well with the theoretical analysis, are reported.

	USE OF SOFT-SWITCHING PRINCIPLES IN PWM VOLTAGE INVERTERS DESIGN By F. Forest; J. Gonzalez; F. Costa	[View] [Download]
Abstract: Soft-switching principles (ZCS-ZVS), classically used in DC-to-DC converters, are now introduced in voltage inverters, for medium or high frequency applications. This paper presents, in a first part, an attempt of state-of-the-art in this power conversion field where it appears that most of researchers are working on ZVS mode or mixed ZVS-ZCS mode. So, in the second part, authors propose ZCS solutions, allowing good operating conditions for devices such as IGBT. Experimental results on a 180A-20KHz inverter-leg supplied by 380V rectified mains with IGBT modules are presented. An original experimental test circuit allows a direct losses measurement and comparison between a classical PWM inverter-leg without snubber and the ZCS solution.

	State-Vector Feedback Control based High-Frequency Carrier PWM Power Conversion Amplifier with High-Precision Magnetic-Field Current-Tracking Scheme By Hiroya Fukuda; Mutsuo Nakaoka	[View] [Download]
Abstract: This paper presents performance evaluations of a high-frequency (100kHz) carrier switched-mode PWM power conversion amplifier system for precise high-speed current-tracking control of electromagnetic circuit. lts computer-aided analysis and some design considerations are described on the basis of state-space averaging analysis and model matching method. The proposed power conditioning system technology is more acceptable for the current-regulated power supply of magnetic resonance imaging (MRI) machines, which requires analog-oriented unique highly-regulated power electronic circuit systems for the generation of magnetic-gradient fields.