EPE Association: EPE 2017 - LS5b: Converter Design and Optimization

EPE 2017 - LS5b: Converter Design and Optimization
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2017 ECCE Europe - Conference > EPE 2017 - Topic 02: Power Converter Topologies and Design > EPE 2017 - LS5b: Converter Design and Optimization

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   Bidirectional Buck AC/DC Converters for Compact Size and High Efficiency
By Masaki OKUDA [View]
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Abstract: The authors have proposed the single-stage bidirectional buck AC/DC converter. This paper presents comparison of loss and volume between the proposed single-stage buck AC/DC converter and the conventional two-stage AC/DC converter. The effectiveness of the proposed single-stage buck AC/DC converter is verified by experiments.

   Heatsink-less quasi 3-level flying capacitor inverter based on low voltage SMD MOSFETs
By Mario SCHWEIZER [View]
[Download]

Abstract: Outstanding efficiencies can be achieved by the utilization of the latest technology of low voltage, SMD-packaged Si- or GaN- based semiconductors. These devices allow a heatsink- and fan-less converter design, thus lightweight and high power density converters are typically derived. This paper investigates the advantages of using these relatively low cost SMD-packaged devices in medium power industrial applications. A Quasi 3-level Flying-Capacitor topology is proposed. A cost-performing map is presented in order to verify the benefits of designing this system with low voltage Si- or GaN-based MOSFETs against the latest 650 V IGBTs and 900 V SiC MOSFETs. Finally, a heatsink-less 3.3 kW single-phase inverter prototype implementing 150 V SMD-packaged Si MOSFETs was designed and successfully tested.

   Multiphase Hybrid Buck-Boost Converter with Wide Conversion Ratio
By Folker RENKEN [View]
[Download]

Abstract: This paper presents an interleaved multiphase hybrid buck-boost DC/DC converter. This converter type provides high efficiency and can be used for applications with wide voltage conversion ratio. At the beginning, the circuit function and the design of a single-phase converter is described. With a multiphase design, the filter circuit effort can be significantly reduced. In these circuits the different phases of the converter are controlled with a time offset. The design for a multiphase converter is described in detail. The mathematical analyses of the circuits are proven by simulations and several practical measurements of a realized two-phase converter. Additional, the efficiency measurements of the hybrid buck-boost converter are presented.

   Volume Optimization of a 30 kW Boost PFC Converter Focusing on the CM/DM EMI Filter Design
By Jonas WYSS [View]
[Download]

Abstract: PFC converters are widely used in industrial drive systems. The modulation scheme and the topology of the converter have a considerable impact not only on the switching losses, but also on the volume of the passive components, i.e. the EMI filter (CM and DM) and the DC link capacitors. In order to evaluate this impact, different modulation schemes for 2L and 3L topologies are analysed in this paper based on comprehensive converter optimizations. In these optimizations also a model for the EMI filter is included and the optimal converter volume including the EMI filter is evaluated for the different topologies and modulation schemes. Thus, significant differences in the converter volume can be observed for the different modulation schemes. Also the impact of SiC semiconductors on the system performance is analysed. The \emph{3L-NPB} modulation scheme with a NPC topology offers the best compromise of heat sink, EMI filter and DC link capacitor volume.

EPE 2017 - LS5b: Converter Design and Optimization
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2017 ECCE Europe - Conference > EPE 2017 - Topic 02: Power Converter Topologies and Design > EPE 2017 - LS5b: Converter Design and Optimization
	[return to parent folder]

	Bidirectional Buck AC/DC Converters for Compact Size and High Efficiency By Masaki OKUDA	[View] [Download]
Abstract: The authors have proposed the single-stage bidirectional buck AC/DC converter. This paper presents comparison of loss and volume between the proposed single-stage buck AC/DC converter and the conventional two-stage AC/DC converter. The effectiveness of the proposed single-stage buck AC/DC converter is verified by experiments.

	Heatsink-less quasi 3-level flying capacitor inverter based on low voltage SMD MOSFETs By Mario SCHWEIZER	[View] [Download]
Abstract: Outstanding efficiencies can be achieved by the utilization of the latest technology of low voltage, SMD-packaged Si- or GaN- based semiconductors. These devices allow a heatsink- and fan-less converter design, thus lightweight and high power density converters are typically derived. This paper investigates the advantages of using these relatively low cost SMD-packaged devices in medium power industrial applications. A Quasi 3-level Flying-Capacitor topology is proposed. A cost-performing map is presented in order to verify the benefits of designing this system with low voltage Si- or GaN-based MOSFETs against the latest 650 V IGBTs and 900 V SiC MOSFETs. Finally, a heatsink-less 3.3 kW single-phase inverter prototype implementing 150 V SMD-packaged Si MOSFETs was designed and successfully tested.

	Multiphase Hybrid Buck-Boost Converter with Wide Conversion Ratio By Folker RENKEN	[View] [Download]
Abstract: This paper presents an interleaved multiphase hybrid buck-boost DC/DC converter. This converter type provides high efficiency and can be used for applications with wide voltage conversion ratio. At the beginning, the circuit function and the design of a single-phase converter is described. With a multiphase design, the filter circuit effort can be significantly reduced. In these circuits the different phases of the converter are controlled with a time offset. The design for a multiphase converter is described in detail. The mathematical analyses of the circuits are proven by simulations and several practical measurements of a realized two-phase converter. Additional, the efficiency measurements of the hybrid buck-boost converter are presented.

	Volume Optimization of a 30 kW Boost PFC Converter Focusing on the CM/DM EMI Filter Design By Jonas WYSS	[View] [Download]
Abstract: PFC converters are widely used in industrial drive systems. The modulation scheme and the topology of the converter have a considerable impact not only on the switching losses, but also on the volume of the passive components, i.e. the EMI filter (CM and DM) and the DC link capacitors. In order to evaluate this impact, different modulation schemes for 2L and 3L topologies are analysed in this paper based on comprehensive converter optimizations. In these optimizations also a model for the EMI filter is included and the optimal converter volume including the EMI filter is evaluated for the different topologies and modulation schemes. Thus, significant differences in the converter volume can be observed for the different modulation schemes. Also the impact of SiC semiconductors on the system performance is analysed. The \emph{3L-NPB} modulation scheme with a NPC topology offers the best compromise of heat sink, EMI filter and DC link capacitor volume.