Alfred Rufer

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Related publications (215)

DC-DC Converter based on the Asymmetric Multistage Stacked Boost Architecture with Feed-Forward Control for Photovoltaic Plants

Alfred Rufer, Gina Kristin Steinke, Georgios Mademlis

A new feed-forward control technique for a DC-DC step-up converter based on the asymmet-ric Multistage Stacked Boost Architecture (MSBA) is presented in this paper. The proposed closed loop control scheme can provide improved accuracy in the steady-state o ...

2016

Control Method and Prototyping of the Multistage Stacked Boost Architecture (MSBA)

Alfred Rufer, Gina Kristin Steinke

This paper includes a look into the resonant phenomena of the Multistage Stacked Boost Architecture and a dedicated control method for the MSBA converter to handle these resonances. A linearized fast feed-forward control relying on the feedback of the outp ...

Ieee2016

Energetic Macroscopic Representation (EMR) and control scheme for the asymmetric 4-stage MSBA

Alfred Rufer, Gina Kristin Steinke

The Multistage Stacked Boost Architecture (MSBA) is a non-isolated step-up converter topology intended for renewable energy generation systems or distribution networks. In previous papers the functionality and intended applications for this topology have b ...

2016

Control of the Actively Balanced Capacitive Voltage Divider for a Five-Level NPC Inverter - Estimation of the Intermediary Levels Currents

Alfred Rufer, Nicolas Cherix, Nelson William Koch

This article addresses the control of a Multistage Stacked Boost Architecture (MSBA) feeding a five-level NPC inverter in a grid-tied application. A suitable control strategy was previously presented, in which estimated/reconstructed intermediary currents ...

2016

Dead time and non-linearities compensation for CHB multi-level converters with integrated ESS feeding EV’s ultra-fast charging stations

Alfred Rufer

This paper deals with a compensation technique for non-linear behaviour of single phase modular multi-level power converter, feeding electric vehicle fast charging station with split integrated energy storage system. The proposed method calculates the volt ...

2016

Gas Turbine: Optimization of Energy Production and High Efficiency by Using Power Electronics

Alfred Rufer, Aziza Benaboud

The use of gas turbines in the power generation industry has been increasing. Their demand represents more than 50% of the world market of thermal power plants. Electric power generators using gas turbines as power sources are connected to the turbines thr ...

Elsevier Science Bv2016

Energetic Macroscopic Representation of A Linear Reciprocating Compressor Model

Alfred Rufer, François Gallaire, Mahbod Heidari, Philippe Barrade

This article introduces the energetic macroscopic representation (EMR) as approach for the dynamic nonlinear modeling of a reciprocating air compressor. EMR has been introduced recently for research development in complex electromechanical systems and is b ...

Elsevier2015

A flexible and robust power management mechanism based on single-phase Modular Multilevel Converter with integrated energy storage elements

Alfred Rufer, Rosa Martel Danoary Tsirinomeny

This paper deals with a power management mechanism using Modular Multilevel Converter (MMC) with integrated energy storage elements, the typical use of which could be a grid-interface for a photovoltaic park or a charging park for electric vehicles. In com ...

2015

A Five-Level NPC Photovoltaic Inverter with an Actively Balanced Capacitive Voltage Divider

Alfred Rufer

A new five-level photovoltaic Inverter is presented, implemented by associating a Multistage Stacked Boost Architecture (MSBA) with a 5-level NPC inverter. Ahead of the MSBA conversion stage, a conventional boost converter allows the operation of the PV ce ...

2015

Challenges and Solutions Towards the Ultra Fast Charging of EV's

Alfred Rufer

2015

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DC-DC Converter based on the Asymmetric Multistage Stacked Boost Architecture with Feed-Forward Control for Photovoltaic Plants

Alfred Rufer, Gina Kristin Steinke, Georgios Mademlis

2016

Control of the Actively Balanced Capacitive Voltage Divider for a Five-Level NPC Inverter - Estimation of the Intermediary Levels Currents

Alfred Rufer, Nicolas Cherix, Nelson William Koch

2016

Dead time and non-linearities compensation for CHB multi-level converters with integrated ESS feeding EV’s ultra-fast charging stations

Alfred Rufer

2016

A flexible and robust power management mechanism based on single-phase Modular Multilevel Converter with integrated energy storage elements

Alfred Rufer, Rosa Martel Danoary Tsirinomeny

2015