EPE Association: NORpie 2000 - Topic 05: POWER CONVERTERS AND CONTROL I

NORpie 2000 - Topic 05: POWER CONVERTERS AND CONTROL I
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2000 > NORpie 2000 - Topic 05: POWER CONVERTERS AND CONTROL I

   [return to parent folder]

   Comparison of different Converters with Sinusoidal Line Currents suited for a 15 kW Permanent Magnet Integral Motor
By K. Kretschmar; H.-P. Nee [View]
[Download]

Abstract: In this paper three different converter topologies are compared concerning their usability for permanent magnet integral motors. In the analysis special attention is payed to the efficiency of each converter topology, since the volume of the converter is highly dependent on the cooling requirements. Aspects of power factor correction of the line currents are also included in this paper. Only two of the three converter topologies fulfill the EMC standards. The line-side switch-mode rectifier and the Vienna rectifier. Both have a satisfactory efficiency but the line-side switch-mode rectifier provides also a regenerative braking possibility

   Zero Voltage Switching Converters
By Per Karlsson; Martin Bojrup; Mats Alaküla; Lars Gertmar [View]
[Download]

Abstract: In this paper zero voltage switching converters are investigated. The investigation starts by discussing the RCD charge-discharge snubber. The concept of resonant and quasi-resonant DC link converters is discussed. One of the most promising quasi-resonant DC links reported in the literature is implemented and tested in a battery charger application. Simulated resonant link voltage and current waveforms are analysed. IGBT switching waveforms under zero voltage conditions are investigated. Measured waveforms are shown and the converter and the overall battery charger efficiency are measured.

   Improved Voltage and Frequency Restoration in Parallel Connected Three Phase Power Converters
By U. B. Jensen; F. Blaabjerg; J. K. Pedersen [View]
[Download]

Abstract: In parallel-connected converter systems load sharing is often achieved by adjusting the voltage amplitude and the frequency depending on the load. Due to this adjustment the steady state frequency and voltage amplitude differ from their reference depending on the load. This paper presents a new method that provides load sharing in the transient phase with restoration of the steady state values. The method is proved both by simulation and experiments in a 400 Hz AC system.

NORpie 2000 - Topic 05: POWER CONVERTERS AND CONTROL I
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > NORpie - Proceedings > NORpie 2000 > NORpie 2000 - Topic 05: POWER CONVERTERS AND CONTROL I
	[return to parent folder]

	Comparison of different Converters with Sinusoidal Line Currents suited for a 15 kW Permanent Magnet Integral Motor By K. Kretschmar; H.-P. Nee	[View] [Download]
Abstract: In this paper three different converter topologies are compared concerning their usability for permanent magnet integral motors. In the analysis special attention is payed to the efficiency of each converter topology, since the volume of the converter is highly dependent on the cooling requirements. Aspects of power factor correction of the line currents are also included in this paper. Only two of the three converter topologies fulfill the EMC standards. The line-side switch-mode rectifier and the Vienna rectifier. Both have a satisfactory efficiency but the line-side switch-mode rectifier provides also a regenerative braking possibility

	Zero Voltage Switching Converters By Per Karlsson; Martin Bojrup; Mats Alaküla; Lars Gertmar	[View] [Download]
Abstract: In this paper zero voltage switching converters are investigated. The investigation starts by discussing the RCD charge-discharge snubber. The concept of resonant and quasi-resonant DC link converters is discussed. One of the most promising quasi-resonant DC links reported in the literature is implemented and tested in a battery charger application. Simulated resonant link voltage and current waveforms are analysed. IGBT switching waveforms under zero voltage conditions are investigated. Measured waveforms are shown and the converter and the overall battery charger efficiency are measured.

	Improved Voltage and Frequency Restoration in Parallel Connected Three Phase Power Converters By U. B. Jensen; F. Blaabjerg; J. K. Pedersen	[View] [Download]
Abstract: In parallel-connected converter systems load sharing is often achieved by adjusting the voltage amplitude and the frequency depending on the load. Due to this adjustment the steady state frequency and voltage amplitude differ from their reference depending on the load. This paper presents a new method that provides load sharing in the transient phase with restoration of the steady state values. The method is proved both by simulation and experiments in a 400 Hz AC system.