EPE Association: Pelincec 2005 - 24: WATAB III

Pelincec 2005 - 24: WATAB III - Ph.D. Student Forum
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > Pelincec 2005 > Pelincec 2005 - 24: WATAB III - Ph.D. Student Forum

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   Investigations on the Controllability and the Design of DC/DC Converters connected to PV - Generators
By Christian P. Dick, Klaus Rigbers, Harald Radermacher, Rik W. De Doncker [View]
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Abstract: This paper presents analytical and computer aided investigations on photovoltaic (PV) - generators connected to DC/DC converters for module integrated inverters. It shows the controllability and describes how to design the converters regarding requirements such as a wide variable input voltage range, a constant output voltage and a variable transferred power, depending on temperature, solar radiation and the PVgenerator itself. Due to the high non-linearity of the PVgenerator's characteristic, a mathematic model is presented in a basic form and it is applied to several real systems showing the controllability and important information on the design.

   IMPROVED PLL STRUCTURES FOR SINGLE-PHASE GRID INVERTERS
By Mihai Ciobotaru, Remus Teodorescu, Frede Blaabjerg [View]
[Download]

Abstract: Phase, amplitude and frequency of the utility grid are critical information for the operation of the grid-connected power conditioning equipments. In such applications, an accurate and fast detection of the phase angle of the utility voltage is essential to assure a correct generation of the reference signals. This paper presents two improved phase-locked-loop (PLL) methods for single-phase grid connected systems. The investigated PLL methods are based on a transport delay method and an inverse Park transformation method. The improvements in the case of using the delay-based PLL are: non-frequency dependent and better filtering of the harmonics. For the other investigated PLL method based on inverse Park transformation the improvement consists of better filtering of the harmonics. Experimental results validate the effectiveness of the two proposed methods.

   Analysis of IGCT Turn-On Transients in Circuit Configurations With Series Connected Diodes
By Sven Tschirley, Steffen Bernet [View]
[Download]

Abstract: This paper describes the effect of series connected diodes and their balancing networks in the clamp circuit in IGCT converters. It is shown, that the balancing of the clamp diodes has other requirements than the balancing of the series connected freewheeling diodes in the switch cell. The dynamic and static balancing of the clamp diodes is analyzed in detail.

   An application of PSIM to rapid prototyping of DSP controlled power electronics converters.
By Bartlomiej Kamiñski, Krzysztof Wejrzanowski, Wlodzimierz Koczara [View]
[Download]

Abstract: The paper presents power electronics research opportunities provided by PSIM simulation software and high performance floating point DSP controller. Advantages of PSIM C/C++ modeling capabilities are shown by modeling of DSP controller runtime environment(RTE). Thanks to this feature source code of control algorithm targeted for the DSP can be embedded in power electronics circuit simulation. Therefore, more detailed system description can be built. As a proof of this idea, simulation as well as experimental results of sensorless active rectifier control are provided.

Pelincec 2005 - 24: WATAB III - Ph.D. Student Forum
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > Pelincec 2005 > Pelincec 2005 - 24: WATAB III - Ph.D. Student Forum
	[return to parent folder]

	Investigations on the Controllability and the Design of DC/DC Converters connected to PV - Generators By Christian P. Dick, Klaus Rigbers, Harald Radermacher, Rik W. De Doncker	[View] [Download]
Abstract: This paper presents analytical and computer aided investigations on photovoltaic (PV) - generators connected to DC/DC converters for module integrated inverters. It shows the controllability and describes how to design the converters regarding requirements such as a wide variable input voltage range, a constant output voltage and a variable transferred power, depending on temperature, solar radiation and the PVgenerator itself. Due to the high non-linearity of the PVgenerator's characteristic, a mathematic model is presented in a basic form and it is applied to several real systems showing the controllability and important information on the design.

	IMPROVED PLL STRUCTURES FOR SINGLE-PHASE GRID INVERTERS By Mihai Ciobotaru, Remus Teodorescu, Frede Blaabjerg	[View] [Download]
Abstract: Phase, amplitude and frequency of the utility grid are critical information for the operation of the grid-connected power conditioning equipments. In such applications, an accurate and fast detection of the phase angle of the utility voltage is essential to assure a correct generation of the reference signals. This paper presents two improved phase-locked-loop (PLL) methods for single-phase grid connected systems. The investigated PLL methods are based on a transport delay method and an inverse Park transformation method. The improvements in the case of using the delay-based PLL are: non-frequency dependent and better filtering of the harmonics. For the other investigated PLL method based on inverse Park transformation the improvement consists of better filtering of the harmonics. Experimental results validate the effectiveness of the two proposed methods.

	Analysis of IGCT Turn-On Transients in Circuit Configurations With Series Connected Diodes By Sven Tschirley, Steffen Bernet	[View] [Download]
Abstract: This paper describes the effect of series connected diodes and their balancing networks in the clamp circuit in IGCT converters. It is shown, that the balancing of the clamp diodes has other requirements than the balancing of the series connected freewheeling diodes in the switch cell. The dynamic and static balancing of the clamp diodes is analyzed in detail.

	An application of PSIM to rapid prototyping of DSP controlled power electronics converters. By Bartlomiej Kamiñski, Krzysztof Wejrzanowski, Wlodzimierz Koczara	[View] [Download]
Abstract: The paper presents power electronics research opportunities provided by PSIM simulation software and high performance floating point DSP controller. Advantages of PSIM C/C++ modeling capabilities are shown by modeling of DSP controller runtime environment(RTE). Thanks to this feature source code of control algorithm targeted for the DSP can be embedded in power electronics circuit simulation. Therefore, more detailed system description can be built. As a proof of this idea, simulation as well as experimental results of sensorless active rectifier control are provided.