EPE Association: NORpie 1998 - Topic 01: HIGH FREQUENCY POWER CONVERTERS

NORpie 1998 - Topic 01: HIGH FREQUENCY POWER CONVERTERS
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 1998 > NORpie 1998 - Topic 01: HIGH FREQUENCY POWER CONVERTERS

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   VIENNA Rectifier III - A Novel Three-Phase Single-Stage Buck-Derived Unity Power Factor AC-to-DC Converter System
By Johann W. Kolar; Uwe Drofenik; Hans Ertl; Franz C. Zach [View]
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Abstract: In the area of ACDC converters with low effects on the mains single-stage rectifier systems gain more and more importance. The basic characteristic of these systems is the direct integration of a high-frequency isolation of the output circuit into the converter topology. This makes possible the matching of the output and mains voltage levels besides the sinusoidal guidance of the mains currents and a highly dynamic control of the output voltage. Also, higher efficiency and a lower realization effort as compared to a two-stage, i.e., ACDC-DCDC engergy conversion results. In this paper the topology of a novel single-stage three-phase PWM rectifier system with impressed output current is developed starting from a two-stage converter concept. After the description of the basic function of the circuit (called VIENNA Rectifier 111) the conduction states and the current space vectors available for forming the input currents are determined; a simple multi-loop control of the converter is proposed which also guarantees a symmetric transformer magnetization based on pre-control signals. Furthermore, the theoretical considerations are verified by digital simulation and the current stresses on the power semiconductor devices are calculated in analytically closed form. Finally, a short preview on the planned continuation of the research is given.

   Properties of DC/DC Converters Operating in Discontinuous Capacitor Voltage Mode
By Vlad Grigore; Jorrna Kyyra [View]
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Abstract: DC/DC converters operating in Discontinuous Capacitor Voltage Mode have inherent power factor correction capability and continuous input current. The aim of this paper is to find the topology best suited for power factor correction and having minimum switch stress. First, the Discontinuous Capacitor Voltage Mode is presented and the most advantageous topology is identified. A detailed analysis of this topology is made, leading to design criteria. Finally, design example and simulation results are presented.

   Zero-Current Soft Switching High-Frequency Inverter for Induction-Heating Using SI Device
By H. Ogiwara; M. Nakaoka [View]
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Abstract: This paper presents a new circuit configuration of resonant type high- frequency inverter using Static Induction(S1) device. The proposed high- frequency resonant inverter circuit is composed of a half-bridge topology of two soft switching sub- circuits with common DC input power source, which can operates at a soft-switching mode over the wide load range in power regulation process under constant frequency mode. The trially- produced new resonant prototype inverter using Bipolar- Mode Static Induction Transistor(B- SIT) is originally - tested with a high- frequency induction- heating load with parallel tuned tank circuit.

   A Microcontroller Implementation of a Vector Controlled Current-Source PWM-Rectifier
By Mika Salo; Heikki Tuusa [View]
[Download]

Abstract: In this paper the microcontroller implementation of a vector controlled current-source PWM-rectifier is presented. The control system is realised in the line-voltage-oriented reference frame where the sinusoidal variables appear as dc quantities enabling very simple control method of active and reactive power and compensation of a reactive power drawn by the line filter. The control system is realized using a single-chip Motorola MC68HC916Yl-microcontroller. Some experimental results are also shown.

NORpie 1998 - Topic 01: HIGH FREQUENCY POWER CONVERTERS
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 1998 > NORpie 1998 - Topic 01: HIGH FREQUENCY POWER CONVERTERS
	[return to parent folder]

	VIENNA Rectifier III - A Novel Three-Phase Single-Stage Buck-Derived Unity Power Factor AC-to-DC Converter System By Johann W. Kolar; Uwe Drofenik; Hans Ertl; Franz C. Zach	[View] [Download]
Abstract: In the area of ACDC converters with low effects on the mains single-stage rectifier systems gain more and more importance. The basic characteristic of these systems is the direct integration of a high-frequency isolation of the output circuit into the converter topology. This makes possible the matching of the output and mains voltage levels besides the sinusoidal guidance of the mains currents and a highly dynamic control of the output voltage. Also, higher efficiency and a lower realization effort as compared to a two-stage, i.e., ACDC-DCDC engergy conversion results. In this paper the topology of a novel single-stage three-phase PWM rectifier system with impressed output current is developed starting from a two-stage converter concept. After the description of the basic function of the circuit (called VIENNA Rectifier 111) the conduction states and the current space vectors available for forming the input currents are determined; a simple multi-loop control of the converter is proposed which also guarantees a symmetric transformer magnetization based on pre-control signals. Furthermore, the theoretical considerations are verified by digital simulation and the current stresses on the power semiconductor devices are calculated in analytically closed form. Finally, a short preview on the planned continuation of the research is given.

	Properties of DC/DC Converters Operating in Discontinuous Capacitor Voltage Mode By Vlad Grigore; Jorrna Kyyra	[View] [Download]
Abstract: DC/DC converters operating in Discontinuous Capacitor Voltage Mode have inherent power factor correction capability and continuous input current. The aim of this paper is to find the topology best suited for power factor correction and having minimum switch stress. First, the Discontinuous Capacitor Voltage Mode is presented and the most advantageous topology is identified. A detailed analysis of this topology is made, leading to design criteria. Finally, design example and simulation results are presented.

	Zero-Current Soft Switching High-Frequency Inverter for Induction-Heating Using SI Device By H. Ogiwara; M. Nakaoka	[View] [Download]
Abstract: This paper presents a new circuit configuration of resonant type high- frequency inverter using Static Induction(S1) device. The proposed high- frequency resonant inverter circuit is composed of a half-bridge topology of two soft switching sub- circuits with common DC input power source, which can operates at a soft-switching mode over the wide load range in power regulation process under constant frequency mode. The trially- produced new resonant prototype inverter using Bipolar- Mode Static Induction Transistor(B- SIT) is originally - tested with a high- frequency induction- heating load with parallel tuned tank circuit.

	A Microcontroller Implementation of a Vector Controlled Current-Source PWM-Rectifier By Mika Salo; Heikki Tuusa	[View] [Download]
Abstract: In this paper the microcontroller implementation of a vector controlled current-source PWM-rectifier is presented. The control system is realised in the line-voltage-oriented reference frame where the sinusoidal variables appear as dc quantities enabling very simple control method of active and reactive power and compensation of a reactive power drawn by the line filter. The control system is realized using a single-chip Motorola MC68HC916Yl-microcontroller. Some experimental results are also shown.