EPE Association: EPE 2001 - Topic 01e: Device Characterization and Applications

EPE 2001 - Topic 01e: Device Characterization and Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2001 - Conference > EPE 2001 - Topic 01: DEVICES > EPE 2001 - Topic 01e: Device Characterization and Applications

   [return to parent folder]

   Commutation processes in a Zero Voltage Switching Hybrid DC Switch
By H. Polman; J.A. Ferreira; M. Kaanders; B. Evenblij; P. Van Gelder [View]
[Download]

Abstract: In a DC switch arcing is prevented by combining a semiconductor switch with the mechanical switch. A 600V/6kA switch has been designed and constructed. The hybrid switch is bi-directional and uses Zero Voltage Switching. In principle the ZVS topology consists of three parallel branches. The first contains the mechanical switch, the second a commutation semiconductor and the third an energy absorber. In this paper the commutation process in the hybrid switch is analysed. Three commutation intervals can be distinguished. Modelling and simulations of these three commutation intervals are presented. A prototype switch has been designed and built. The modelling and simulations are verified by experiments conducted on the prototype switch. The prototype shows substantially reduced arcing. The calculations and the simulations are in good agreement with the experimental results.

   Loss Analysis of Integrated Halfbridge Drivers
By G. Sauerlaender [View]
[Download]

Abstract: The losses of halfbridge drivers with integrated levelshifter have been analysed. The different loss mechanisms have been identified resulting in an empirical formula to predict the driver losses as a function of frequency, supply voltage, bus voltage and MOSFET parasitics. Four easily measurable indicators are proposed to compare the efficiency of different drivers.

   Measurement of Radial Cathode-Current-Distribution During IGCT-Turnoff
By E. U. Krafft; A. Steimel [View]
[Download]

Abstract: To investigate the radial cathode current distribution of an IGCT during the turnoff process a measurement adapter has been built, which enables to register the currents of the seperate rings of cathode islands by means of Rogowski coils. Measurements with different driving gate-cathode voltages are presented.

   Power Factor Correction IPM
By M. Seo; M. Iwasaki; H. Iwamoto; M. Honsberg [View]
[Download]

Abstract: Against the background of rising global environmental conservation the efforts to save energy by increasing power distribution efficiency and by reduction of power supply harmonic distortion have been assisted by the rapidly progressing development of semiconductors. An Power Factor Correction Intelligent Power Module (PFC-IPM) addresses the problems of both efficiency and power supply harmonic reduction, utilizing PAM (Pulse Amplitude Modulation) to meet the demands of the air conditioner market. The small size / low loss PFC-IPM using boost converter topology provides a high power factor and high efficiency by utilizing the latest Trench Gate IGBT technology is our approach to provide a compact and reliable solution to the white goods market.

   Traction Converter with 6.5kV IGBT Modules
By Mark Bakran; H. G. Eckel [View]
[Download]

Abstract: For traction applications the 3kV DC-line imposes the highest requirements on converters, needing a maximum dc-link voltage of more than 4kV. In the past only GTOs were available as 6.5kV devices. The newly developed 6.5kV / 600A IGBT modules allow a two-level IGBT converter for 3kV DC. First experiences with the IGBTs behavior, drive, overvoltage and losses will be explained. General aspects on converter design will be given.

   Understanding MBS turn-on behaviour in light dimmer applications
By R. Ferragut; D. Magnon; J.C. Lebunetel; L. Gonthier [View]
[Download]

Abstract: Nowadays, EMC standard compliance is part of the constraints that every electronic and electrical system must fulfil. Power device switching is the main cause of conducted electromagnetic interferences produced by power conversion systems. Studies and optimisations of switching waveforms are therefore of major concern in power electronics. Several works deal with this subject. They define relations between waveforms and conducted interferences. As a result, sinusoidal shaped switching waveform is shown to be the optimal one. In order to understand how to achieve such a waveform, the impact of MBS electrical parameters on switching waveforms should be investigated. This paper presents a simple electrical representation of MBS during turn-on in a resistive or low inductive load. Some conclusions on the influence of MBS electrical parameters on switching waveforms are drawn from it.

EPE 2001 - Topic 01e: Device Characterization and Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2001 - Conference > EPE 2001 - Topic 01: DEVICES > EPE 2001 - Topic 01e: Device Characterization and Applications
	[return to parent folder]

	Commutation processes in a Zero Voltage Switching Hybrid DC Switch By H. Polman; J.A. Ferreira; M. Kaanders; B. Evenblij; P. Van Gelder	[View] [Download]
Abstract: In a DC switch arcing is prevented by combining a semiconductor switch with the mechanical switch. A 600V/6kA switch has been designed and constructed. The hybrid switch is bi-directional and uses Zero Voltage Switching. In principle the ZVS topology consists of three parallel branches. The first contains the mechanical switch, the second a commutation semiconductor and the third an energy absorber. In this paper the commutation process in the hybrid switch is analysed. Three commutation intervals can be distinguished. Modelling and simulations of these three commutation intervals are presented. A prototype switch has been designed and built. The modelling and simulations are verified by experiments conducted on the prototype switch. The prototype shows substantially reduced arcing. The calculations and the simulations are in good agreement with the experimental results.

	Loss Analysis of Integrated Halfbridge Drivers By G. Sauerlaender	[View] [Download]
Abstract: The losses of halfbridge drivers with integrated levelshifter have been analysed. The different loss mechanisms have been identified resulting in an empirical formula to predict the driver losses as a function of frequency, supply voltage, bus voltage and MOSFET parasitics. Four easily measurable indicators are proposed to compare the efficiency of different drivers.

	Measurement of Radial Cathode-Current-Distribution During IGCT-Turnoff By E. U. Krafft; A. Steimel	[View] [Download]
Abstract: To investigate the radial cathode current distribution of an IGCT during the turnoff process a measurement adapter has been built, which enables to register the currents of the seperate rings of cathode islands by means of Rogowski coils. Measurements with different driving gate-cathode voltages are presented.

	Power Factor Correction IPM By M. Seo; M. Iwasaki; H. Iwamoto; M. Honsberg	[View] [Download]
Abstract: Against the background of rising global environmental conservation the efforts to save energy by increasing power distribution efficiency and by reduction of power supply harmonic distortion have been assisted by the rapidly progressing development of semiconductors. An Power Factor Correction Intelligent Power Module (PFC-IPM) addresses the problems of both efficiency and power supply harmonic reduction, utilizing PAM (Pulse Amplitude Modulation) to meet the demands of the air conditioner market. The small size / low loss PFC-IPM using boost converter topology provides a high power factor and high efficiency by utilizing the latest Trench Gate IGBT technology is our approach to provide a compact and reliable solution to the white goods market.

	Traction Converter with 6.5kV IGBT Modules By Mark Bakran; H. G. Eckel	[View] [Download]
Abstract: For traction applications the 3kV DC-line imposes the highest requirements on converters, needing a maximum dc-link voltage of more than 4kV. In the past only GTOs were available as 6.5kV devices. The newly developed 6.5kV / 600A IGBT modules allow a two-level IGBT converter for 3kV DC. First experiences with the IGBTs behavior, drive, overvoltage and losses will be explained. General aspects on converter design will be given.

	Understanding MBS turn-on behaviour in light dimmer applications By R. Ferragut; D. Magnon; J.C. Lebunetel; L. Gonthier	[View] [Download]
Abstract: Nowadays, EMC standard compliance is part of the constraints that every electronic and electrical system must fulfil. Power device switching is the main cause of conducted electromagnetic interferences produced by power conversion systems. Studies and optimisations of switching waveforms are therefore of major concern in power electronics. Several works deal with this subject. They define relations between waveforms and conducted interferences. As a result, sinusoidal shaped switching waveform is shown to be the optimal one. In order to understand how to achieve such a waveform, the impact of MBS electrical parameters on switching waveforms should be investigated. This paper presents a simple electrical representation of MBS during turn-on in a resistive or low inductive load. Some conclusions on the influence of MBS electrical parameters on switching waveforms are drawn from it.