EPE Association: EPE 2015 - DS3d: Advanced Power Converter Topologies

EPE 2015 - DS3d: Advanced Power Converter Topologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 02: Power Converter Topologies and Design > EPE 2015 - DS3d: Advanced Power Converter Topologies

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   A Novel Modulation Strategy Providing Loss Balancing and Neutral Point Potential Balancing for Three-Level Active Neutral-Point-Clamped Converter
By Bo ZHANG [View]
[Download]

Abstract: This paper proposes a novel PWM strategy for three-level active neutral-point-clamped (ANPC) converter, this strategy can balance the power losses of all semiconductors and eliminate the fluctuation in the neutral point voltage over full range of converter output voltage and for all load power factors of ANPC converter. The performance of this modulation approach and its benefits are verified through simulation and experiments.

   Analysis and Control of Single-to-Three-Phase Direct AC/AC Modular Multilevel Converters with Integrated Split Battery Energy Storage for Railway Interties
By Michail VASILADIOTIS [View]
[Download]

Abstract: This paper presents a global hierarchized control method for railway interties based on the direct single-to-three-phase AC/AC Modular Multilevel Converter with integrated split battery energy storage. The power and voltage decoupling between the converter submodules and the batteries is achieved through non-isolated dedicated DC/DC converters. The control objectives include submodule capacitor voltage and battery state of charge balancing. All possible converter operation modes are investigated by means of simulations. Moreover, potential three-phase grid asymmetries are considered and studied. In the latter, the integrated storage elements can be utilized to transfer the necessary active power to the railway network side irrespectively from three-phase grid faults.

   Comparison of losses in different topologies of step-up/step-down inverters
By Lucas HERNANDEZ [View]
[Download]

Abstract: Standard Voltage Source Inverters (VSI) operates with a DC voltage source greater than the peak voltage of the AC source and Current Source Inverters (CSI) with a DC voltage source lower than the peak voltage of the AC source. This paper shows how several topologies of reversible AC/DC buck-boost inverters which do not suffer from such constraints can be compared on the basis of semi-conductor and inductor losses. The main quantities in these converters, such as average current, RMS current, etc. are derived from an analytical analysis and they are combined to semiconductor loss models to derive losses and efficiency of each topology for different working conditions.

   From a Voltage Divider to a Voltage Doubler for a Large DC Gain Converter
By Kerui LI [View]
[Download]

Abstract: A classical step-down switched-capacitor cell is transformed into a step-up cell. By inserting it in a boost converter, a single-switch, low voltage stress, non-pulsating input current, large dc gain hybrid converter is proposed. The theoretical, simulation and experimental results prove the merits of the simple new solution in comparison with the available ones.

   Matrix Converter Modulation minimizing switching losses and including the 6 rotating vectors of the Space Vector representation
By Francois GRUSON [View]
[Download]

Abstract: This paper presents an innovative Low Losses Modulation of the Matrix Converter. Its principle is to minimize the cumulated switched voltage in each cell by increasing and decreasing progressively the output potential of each matrix cell. This modulation can be applied to all conversion matrices previously proposed for the matrix converter modulation and can be easily implemented with a triangular carrier based modulator adapted for matrix converter cells. The proposed modulation involves the use of all vectors present in the matrix converter space vector approach, including the 6 rotating vectors. Simulations verify the losses decreasing, but also reveal a significant reduction of the output voltages THD, and a very slightly increasing of the input currents THD.

   New High Availability Four Quadrant Converter [600A; 10V] for LHC
By Vicente Raúl HERRERO [View]
[Download]

Abstract: High availability in four quadrant (4-quadrant) converters is crucial in Large Hadron Collider (LHC) operation. The level of radiation will increase, and higher availability is required for each system. To get this aim, a new redundant 4-quadrant linear converter is developed modifying the control strategy of current converters in LHC. Applied characteristics and experimental results are exposed in this paper.

   Research on the Control Strategy of Modular Multilevel Converter for Feeding Three-phase Machines
By Yang YU [View]
[Download]

Abstract: Modular Multilevel Converter (MMC) is mainly used in the high frequency field especially in the HVDC system. This contribution presents a control strategy of modular multilevel converter, whichallows the converters to feed the three-phase machine from 0Hz to 50Hz. Experiments are provided and the drive system has a good performance.

EPE 2015 - DS3d: Advanced Power Converter Topologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 02: Power Converter Topologies and Design > EPE 2015 - DS3d: Advanced Power Converter Topologies
	[return to parent folder]

	A Novel Modulation Strategy Providing Loss Balancing and Neutral Point Potential Balancing for Three-Level Active Neutral-Point-Clamped Converter By Bo ZHANG	[View] [Download]
Abstract: This paper proposes a novel PWM strategy for three-level active neutral-point-clamped (ANPC) converter, this strategy can balance the power losses of all semiconductors and eliminate the fluctuation in the neutral point voltage over full range of converter output voltage and for all load power factors of ANPC converter. The performance of this modulation approach and its benefits are verified through simulation and experiments.

	Analysis and Control of Single-to-Three-Phase Direct AC/AC Modular Multilevel Converters with Integrated Split Battery Energy Storage for Railway Interties By Michail VASILADIOTIS	[View] [Download]
Abstract: This paper presents a global hierarchized control method for railway interties based on the direct single-to-three-phase AC/AC Modular Multilevel Converter with integrated split battery energy storage. The power and voltage decoupling between the converter submodules and the batteries is achieved through non-isolated dedicated DC/DC converters. The control objectives include submodule capacitor voltage and battery state of charge balancing. All possible converter operation modes are investigated by means of simulations. Moreover, potential three-phase grid asymmetries are considered and studied. In the latter, the integrated storage elements can be utilized to transfer the necessary active power to the railway network side irrespectively from three-phase grid faults.

	Comparison of losses in different topologies of step-up/step-down inverters By Lucas HERNANDEZ	[View] [Download]
Abstract: Standard Voltage Source Inverters (VSI) operates with a DC voltage source greater than the peak voltage of the AC source and Current Source Inverters (CSI) with a DC voltage source lower than the peak voltage of the AC source. This paper shows how several topologies of reversible AC/DC buck-boost inverters which do not suffer from such constraints can be compared on the basis of semi-conductor and inductor losses. The main quantities in these converters, such as average current, RMS current, etc. are derived from an analytical analysis and they are combined to semiconductor loss models to derive losses and efficiency of each topology for different working conditions.

	From a Voltage Divider to a Voltage Doubler for a Large DC Gain Converter By Kerui LI	[View] [Download]
Abstract: A classical step-down switched-capacitor cell is transformed into a step-up cell. By inserting it in a boost converter, a single-switch, low voltage stress, non-pulsating input current, large dc gain hybrid converter is proposed. The theoretical, simulation and experimental results prove the merits of the simple new solution in comparison with the available ones.

	Matrix Converter Modulation minimizing switching losses and including the 6 rotating vectors of the Space Vector representation By Francois GRUSON	[View] [Download]
Abstract: This paper presents an innovative Low Losses Modulation of the Matrix Converter. Its principle is to minimize the cumulated switched voltage in each cell by increasing and decreasing progressively the output potential of each matrix cell. This modulation can be applied to all conversion matrices previously proposed for the matrix converter modulation and can be easily implemented with a triangular carrier based modulator adapted for matrix converter cells. The proposed modulation involves the use of all vectors present in the matrix converter space vector approach, including the 6 rotating vectors. Simulations verify the losses decreasing, but also reveal a significant reduction of the output voltages THD, and a very slightly increasing of the input currents THD.

	New High Availability Four Quadrant Converter [600A; 10V] for LHC By Vicente Raúl HERRERO	[View] [Download]
Abstract: High availability in four quadrant (4-quadrant) converters is crucial in Large Hadron Collider (LHC) operation. The level of radiation will increase, and higher availability is required for each system. To get this aim, a new redundant 4-quadrant linear converter is developed modifying the control strategy of current converters in LHC. Applied characteristics and experimental results are exposed in this paper.

	Research on the Control Strategy of Modular Multilevel Converter for Feeding Three-phase Machines By Yang YU	[View] [Download]
Abstract: Modular Multilevel Converter (MMC) is mainly used in the high frequency field especially in the HVDC system. This contribution presents a control strategy of modular multilevel converter, whichallows the converters to feed the three-phase machine from 0Hz to 50Hz. Experiments are provided and the drive system has a good performance.