EPE Association: EPE-PEMC 2008 - Topic: Integration Technologies in Power Converters

EPE-PEMC 2008 - Topic: Integration Technologies in Power Converters
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2008 - Conference > EPE-PEMC 2008 - Topic: Integration Technologies in Power Converters

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   A Novel Digital Control Method for DC-DC Converter
By Fujio Kurokawa [View]
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Abstract: The purpose of this paper is to present a novel control method for the digitally controlled dc-dc converter and to improve the dynamic characteristics using the proposed simple control circuit. The feature is that the derivative control in the time-domain is combined to the FIR filter in the frequency-domain. As a result, it is clarified that the transient time and overshoot of the reactor current are suppressed to within 1.43 ms and 1.4 A and that these result is approximately 60\% smaller than the conventional minimum phase FIR filter method, respectively. Moreover, it is revealed that the number of parts of the digital control circuit is 15\% smaller than that of the analog control circuit and the cost is also 5\% smaller.

   A Novel Single/Three-phase Matrix Converter for High Power Integration
By Makoto Saito [View]
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Abstract: This paper deals with a three-phase to singlephase power conversion system using a matrix converter topology. In order to compensate for instantaneous power unbalance occurring between three-phase circuits and singlephase circuits, a small reactor is installed into a matrix converter. The proposed circuit and control diagrams as well as some important simulation results are described herein.

   An Effective Design Method for High Power Density Converters
By Yusuke Hayashi [View]
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Abstract: Energy Semiconductor Electronics Research Laboratory in AIST has developed an integration design methodology for high power density converters. A part of this work, a novel converter loss estimation method based on Power Converter Platform Concept was proposed. The proposed method estimates the converter loss exactly under real circuit operation condition, by taking the correlation among converter parameters into account. The availability of the proposed method was shown, and the design consideration was carried out for the power conditioner of the photovoltaic solar generation.

   Discussion of Internal and External High Frequency Common Mode Noise Current on a Chopper Circuit
By Tetsuya Mitani, Keiji Wada, Toshihisa Shimizu and Hiromichi Ohashi [View]
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Abstract: The mechanism of common-mode noise current in control and gate-drive circuits on a chopper circuit is discussed. For high power density configurations, common-mode noise current flows not only in the main circuit, but also in the control and gate-drive circuits. This noise current increases the risk of control circuit misoperation, and might flow out from control and gate-drive circuits and interfere in a utility line, etc. The factors for the generation of noise currents and the propagation paths of these noise currents are examined. The influence of this noise current on the EMI noise is shown from the experimental results.

   Interaction Between Thermal Impedance and Parasitics in Power Sections
By Stefan Förster [View]
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Abstract: Considerations refer to thermal optimisation and its coherence with the appearance of electrical parasitics in power electronic systems. Analytical and finite element simulation assisted analysis of thermal resistance depending on geometry of layered assemblies is discussed. Resulting approach provides a basis for considerations on parasitics applying partial element equivalent circuit method (PEEC).

EPE-PEMC 2008 - Topic: Integration Technologies in Power Converters
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2008 - Conference > EPE-PEMC 2008 - Topic: Integration Technologies in Power Converters
	[return to parent folder]

	A Novel Digital Control Method for DC-DC Converter By Fujio Kurokawa	[View] [Download]
Abstract: The purpose of this paper is to present a novel control method for the digitally controlled dc-dc converter and to improve the dynamic characteristics using the proposed simple control circuit. The feature is that the derivative control in the time-domain is combined to the FIR filter in the frequency-domain. As a result, it is clarified that the transient time and overshoot of the reactor current are suppressed to within 1.43 ms and 1.4 A and that these result is approximately 60\% smaller than the conventional minimum phase FIR filter method, respectively. Moreover, it is revealed that the number of parts of the digital control circuit is 15\% smaller than that of the analog control circuit and the cost is also 5\% smaller.

	A Novel Single/Three-phase Matrix Converter for High Power Integration By Makoto Saito	[View] [Download]
Abstract: This paper deals with a three-phase to singlephase power conversion system using a matrix converter topology. In order to compensate for instantaneous power unbalance occurring between three-phase circuits and singlephase circuits, a small reactor is installed into a matrix converter. The proposed circuit and control diagrams as well as some important simulation results are described herein.

	An Effective Design Method for High Power Density Converters By Yusuke Hayashi	[View] [Download]
Abstract: Energy Semiconductor Electronics Research Laboratory in AIST has developed an integration design methodology for high power density converters. A part of this work, a novel converter loss estimation method based on Power Converter Platform Concept was proposed. The proposed method estimates the converter loss exactly under real circuit operation condition, by taking the correlation among converter parameters into account. The availability of the proposed method was shown, and the design consideration was carried out for the power conditioner of the photovoltaic solar generation.

	Discussion of Internal and External High Frequency Common Mode Noise Current on a Chopper Circuit By Tetsuya Mitani, Keiji Wada, Toshihisa Shimizu and Hiromichi Ohashi	[View] [Download]
Abstract: The mechanism of common-mode noise current in control and gate-drive circuits on a chopper circuit is discussed. For high power density configurations, common-mode noise current flows not only in the main circuit, but also in the control and gate-drive circuits. This noise current increases the risk of control circuit misoperation, and might flow out from control and gate-drive circuits and interfere in a utility line, etc. The factors for the generation of noise currents and the propagation paths of these noise currents are examined. The influence of this noise current on the EMI noise is shown from the experimental results.

	Interaction Between Thermal Impedance and Parasitics in Power Sections By Stefan Förster	[View] [Download]
Abstract: Considerations refer to thermal optimisation and its coherence with the appearance of electrical parasitics in power electronic systems. Analytical and finite element simulation assisted analysis of thermal resistance depending on geometry of layered assemblies is discussed. Resulting approach provides a basis for considerations on parasitics applying partial element equivalent circuit method (PEEC).