EPE Association: Pelincec 2005 - 23: WATAB II

Pelincec 2005 - 23: WATAB II - Ph.D. Student Forum
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > Pelincec 2005 > Pelincec 2005 - 23: WATAB II - Ph.D. Student Forum

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   Double Inverter as a Multilevel Converter: Circuit Topology, Modulation Strategies and Applications
By D. Casadei, G. Grandi, A. Lega, C. Rossi [View]
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Abstract: A way to achieve a multilevel converter using two standard three-phase two-level inverters is presented in this paper. In order to obtain the typical multilevel voltage waveforms it is necessary to synchronize the commutations of the two inverters by a proper modulation strategy. Two modulation strategies are presented: the first one allows only generating the characteristic multilevel line-to-line voltages; the second one allows controlling the power flows from the two inverters too. The proposed converter topology can be applied in the automotive and naval fields.

   Digitally Controlled Interface Between Supercapacitor Energy Storage and DC Link
By Roman Barlik, Juliusz Hildebrandt, Mieczyslaw Nowak, Jacek Rabkowski [View]
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Abstract: In the paper specification of a complex converter designed as an interface between a supercapacitor energy storage battery and other DC auxiliary links, with emphasis on its control system, and some laboratory investigation results, are presented. The converter applied in the solution contains a DC/DC power controller and a DC/AC/DC medium frequency intermediate link with a transformer, permitting good voltage matching. Specific control of both cooperating converters in accordance with the proposed solution gives the possibility of synchronized and phase controlled operation of DC/DC and DC/AC converters resulting in the impact on the AC current wave shape. In this way, energy loss of AC link switching and conducting minimization and the improving of interface efficiency have been emphasized.

   Current Controller Design for a Rotor Flux Controlled High Speed Induction Motor Drive Applying Two-Level Voltage Source Converter with Sine LC-Filter
By K. Jalili, M. Malinowski, S. Bernet [View]
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Abstract: This paper describes the field oriented control of a High Speed Induction Motor (HSIM) with a Two-Level Voltage Source Converter (2L-VSC) and an LC-filter for a 420V low voltage high speed drive. The filter design procedure to reduce the torque ripple as well as the model of LC-filter combined with the HSIM in rotor flux oriented frame is presented. A modified decoupling circuit and the corresponding current regulator parameters are proposed to improve the dynamic performance of a high speed drive connected to a 2L-VSC via an LC-filter. The overall system consisting of HSIM, 2L-VSC, LC-filter and a discrete control system is simulated to study the performance of the current and speed control loops.

   Direct Power and Torque Control for AC/DC/AC converter with reduced dc-link capacitor
By M. Jasinski [View]
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Abstract: Direct Power and Torque Control- Space Vector Modulated (DPT-SVM) are presented. This strategy leads to good dynamic and static behaviors of the proposed control system. Additional power feedforward (PF) loop from a motor to voltage source rectifier VSR control side improves dynamic of the power flow control. As a result, better input-output energy matching allows decreasing the size of the DC-link capacitor.

Pelincec 2005 - 23: WATAB II - Ph.D. Student Forum
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > Pelincec 2005 > Pelincec 2005 - 23: WATAB II - Ph.D. Student Forum
	[return to parent folder]

	Double Inverter as a Multilevel Converter: Circuit Topology, Modulation Strategies and Applications By D. Casadei, G. Grandi, A. Lega, C. Rossi	[View] [Download]
Abstract: A way to achieve a multilevel converter using two standard three-phase two-level inverters is presented in this paper. In order to obtain the typical multilevel voltage waveforms it is necessary to synchronize the commutations of the two inverters by a proper modulation strategy. Two modulation strategies are presented: the first one allows only generating the characteristic multilevel line-to-line voltages; the second one allows controlling the power flows from the two inverters too. The proposed converter topology can be applied in the automotive and naval fields.

	Digitally Controlled Interface Between Supercapacitor Energy Storage and DC Link By Roman Barlik, Juliusz Hildebrandt, Mieczyslaw Nowak, Jacek Rabkowski	[View] [Download]
Abstract: In the paper specification of a complex converter designed as an interface between a supercapacitor energy storage battery and other DC auxiliary links, with emphasis on its control system, and some laboratory investigation results, are presented. The converter applied in the solution contains a DC/DC power controller and a DC/AC/DC medium frequency intermediate link with a transformer, permitting good voltage matching. Specific control of both cooperating converters in accordance with the proposed solution gives the possibility of synchronized and phase controlled operation of DC/DC and DC/AC converters resulting in the impact on the AC current wave shape. In this way, energy loss of AC link switching and conducting minimization and the improving of interface efficiency have been emphasized.

	Current Controller Design for a Rotor Flux Controlled High Speed Induction Motor Drive Applying Two-Level Voltage Source Converter with Sine LC-Filter By K. Jalili, M. Malinowski, S. Bernet	[View] [Download]
Abstract: This paper describes the field oriented control of a High Speed Induction Motor (HSIM) with a Two-Level Voltage Source Converter (2L-VSC) and an LC-filter for a 420V low voltage high speed drive. The filter design procedure to reduce the torque ripple as well as the model of LC-filter combined with the HSIM in rotor flux oriented frame is presented. A modified decoupling circuit and the corresponding current regulator parameters are proposed to improve the dynamic performance of a high speed drive connected to a 2L-VSC via an LC-filter. The overall system consisting of HSIM, 2L-VSC, LC-filter and a discrete control system is simulated to study the performance of the current and speed control loops.

	Direct Power and Torque Control for AC/DC/AC converter with reduced dc-link capacitor By M. Jasinski	[View] [Download]
Abstract: Direct Power and Torque Control- Space Vector Modulated (DPT-SVM) are presented. This strategy leads to good dynamic and static behaviors of the proposed control system. Additional power feedforward (PF) loop from a motor to voltage source rectifier VSR control side improves dynamic of the power flow control. As a result, better input-output energy matching allows decreasing the size of the DC-link capacitor.