EPE Association: EPE 1989 - 00 - Keynotes: SURVEY PAPERS

EPE 1989 - 00 - Keynotes: SURVEY PAPERS
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1989 - Conference > EPE 1989 - 00 - Keynotes: SURVEY PAPERS

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   RECENT DEVELOPMENTS IN HIGH-FREQUENCY QUASI-RESONANT AND MULTI-RESONANT CONVERTER TECHNOLOGIES
By Fred C. Lee; Wojciech A. Tabisz; Milan M. Jovanovic [View]
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Abstract: Resonant-switch topologies operating under the principle of zero-current switching and zero-voltage switching are introduced to minimize switching losses, stresses and noises. Employing the resonant-switch concept, the family of quasi-resonant converters (QRCs) and the family of multiresonant converters (MRCs) are derived from the conventional PWM converters. They are capable of operating in megahertz range, with a significant improvement in performance and power density. Characteristics of these QRCs and MRCs are reviewed and their relative merits and limitations are assessed.

   LARGE ADJUSTABLE SPEED AC-DRIVES
By N. Kleinsorge; U. Putz; H. Stemmler [View]
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Abstract: Electric motor adjustable speed drives have established themselves firmly in the market as prime movers for large process machinery . There are only very few known applications where such drives cannot be used . This paper presents the technical concepts, typical hardware solutions, and application examples of all major AC adjustable speed drive systems in use today, both for synchronous and asynchronous (induction) motors. The emphasis is on large drives of high speed and power rating and on drives for turbo machines.

   AC SERVO DRIVES
By W. Wyss; H. Gierse; B. Dupré-Latour [View]
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Abstract: This publication gives a survey on a specific part of electronic power conversion: AC servo drives as they are used for machine tool and handling applications. The point of view of control theory and signal flow which is a good way to approach the diversity and complexity of the whole field, has been choosed. Definitions are given to help a comparaison between trapezoidal and sine wave current drives. To illustrate further aspects of AC servo drives, some special advanced developements in this technology are presented. Particular transducers, servomotors and CNC control solutions for machine tool with higher productivity are discussed.

EPE 1989 - 00 - Keynotes: SURVEY PAPERS
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1989 - Conference > EPE 1989 - 00 - Keynotes: SURVEY PAPERS
	[return to parent folder]

	RECENT DEVELOPMENTS IN HIGH-FREQUENCY QUASI-RESONANT AND MULTI-RESONANT CONVERTER TECHNOLOGIES By Fred C. Lee; Wojciech A. Tabisz; Milan M. Jovanovic	[View] [Download]
Abstract: Resonant-switch topologies operating under the principle of zero-current switching and zero-voltage switching are introduced to minimize switching losses, stresses and noises. Employing the resonant-switch concept, the family of quasi-resonant converters (QRCs) and the family of multiresonant converters (MRCs) are derived from the conventional PWM converters. They are capable of operating in megahertz range, with a significant improvement in performance and power density. Characteristics of these QRCs and MRCs are reviewed and their relative merits and limitations are assessed.

	LARGE ADJUSTABLE SPEED AC-DRIVES By N. Kleinsorge; U. Putz; H. Stemmler	[View] [Download]
Abstract: Electric motor adjustable speed drives have established themselves firmly in the market as prime movers for large process machinery . There are only very few known applications where such drives cannot be used . This paper presents the technical concepts, typical hardware solutions, and application examples of all major AC adjustable speed drive systems in use today, both for synchronous and asynchronous (induction) motors. The emphasis is on large drives of high speed and power rating and on drives for turbo machines.

	AC SERVO DRIVES By W. Wyss; H. Gierse; B. Dupré-Latour	[View] [Download]
Abstract: This publication gives a survey on a specific part of electronic power conversion: AC servo drives as they are used for machine tool and handling applications. The point of view of control theory and signal flow which is a good way to approach the diversity and complexity of the whole field, has been choosed. Definitions are given to help a comparaison between trapezoidal and sine wave current drives. To illustrate further aspects of AC servo drives, some special advanced developements in this technology are presented. Particular transducers, servomotors and CNC control solutions for machine tool with higher productivity are discussed.