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Jean-Christophe Crebier

Bio: Jean-Christophe Crebier is an academic researcher from University of Grenoble. The author has contributed to research in topics: Power semiconductor device & Gate driver. The author has an hindex of 23, co-authored 148 publications receiving 1950 citations. Previous affiliations of Jean-Christophe Crebier include Grenoble Institute of Technology & Commissariat à l'énergie atomique et aux énergies alternatives.


Papers
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Journal ArticleDOI
TL;DR: In this article, a next-to-next balancing technique for series-connected cells of rechargeable lithium-ion batteries is presented and its design and operating limitations are analyzed, and the experimental results of the balancing operation of a pack of eight cells connected in series are demonstrated.
Abstract: Voltage balancing between series-connected cells of rechargeable lithium-ion batteries is important for battery life, autonomy, and safety. Active balancing is the designated choice for applications that are sensitive to energy losses and maximized autonomy. First, a well-known next-to-next balancing technique is presented and its design and operating limitations are analyzed. Then, the paper focuses on an evolution of the converter's architecture offering better performances while being more compact, requiring fewer and smaller filtering needs and still, being simple to implement. The experimental results of the balancing operation of a pack of eight cells connected in series show demonstrative and satisfactory results.

173 citations

Journal ArticleDOI
TL;DR: In this article, an innovative any cell(s) to any cell (s) active balancing converter for lithium battery stack management is presented, based on multiphase converter legs connected to each lithium battery potential.
Abstract: In this paper, an innovative any cell(s) to any cell(s) active balancing converter for lithium battery stack management is presented. Based on multiphase converter legs connected to each lithium battery potential, it is able to transfer energy from any cell(s) to any cell(s). First, a basic “natural” balancing control strategy is presented. Then, based on the perspective of a high level of integration, an interleaved topology is proposed as an evolution of the converter for the downsizing of the passive components. It is explained how the large increase in the number of components is compensated by the high level of integration obtained for the given converter topology. Simulation and experimental results are provided to demonstrate the interest of the converter for active balancing of lithium-based battery stacks.

155 citations

Journal ArticleDOI
TL;DR: The proposed topology eliminates the multiple maximum power point peaks common to partial shading in PV modules by equalizing the overall energy of the PV module through the use of only one inductive storage element.
Abstract: This paper studies a photovoltaic (PV)-module-embedded power-electronics topology derived from a battery equalizer. The proposed topology eliminates the multiple maximum power point peaks common to partial shading in PV modules. The topology does so by equalizing the overall energy of the PV module through the use of only one inductive storage element. A theoretical study is carried out to describe the physical equations of the topology. Based on it, a prototype is designed and built. It is tested with a partially shaded PV module, raising its power output by nearly 40% at best. The results are compared to similar topologies dedicated to mitigate partial shading in PV applications.

150 citations

Proceedings ArticleDOI
06 Mar 2011
TL;DR: In this article, the authors presented a new technique for next-to-next balancing that improves on the conventional technique by offering better performances while being simpler to implement and showed an important reduction of the size of the magnetic coupler while maintaining efficiency at a level above 90%.
Abstract: Voltage balancing between series-connected cells of rechargeable lithium-ion batteries is important for battery life, autonomy and security. Active balancing is the designated choice for applications that are sensitive to energy losses. A well-known next-to-next balancing technique is presented and its design and operating limitations are analyzed. This paper then presents a new technique for next-to-next balancing that improves on the conventional technique by offering better performances while being simpler to implement. Experimental results show an important reduction of the size of the magnetic coupler while maintaining efficiency at a level above 90%.

82 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present an approach to continuous variable design optimization of a power electronics converter, where the objective is to minimize the total component cost, given practical constraints on these design variables and system responses.
Abstract: This paper presents an approach to continuous variable design optimization of a power electronics converter. The objective of the optimization approach is to minimize the total component cost. The methodology is illustrated with the design of a boost power factor correction front-end converter with an input electromagnetic interference filter. The system design variables are first identified. The relevant system responses and component costs are then expressed as a function of these design variables. Finally, by using mathematical optimization techniques, the design variable values that minimize the total system component cost are obtained, given practical constraints on these design variables and system responses.

80 citations


Cited by
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Journal ArticleDOI
TL;DR: This paper presents an exhaustive review of three-phase improved power quality AC-DC converters configurations, control strategies, selection of components, comparative factors, recent trends, their suitability, and selection for specific applications.
Abstract: Solid-state switch-mode rectification converters have reached a matured level for improving power quality in terms of power-factor correction (PFC), reduced total harmonic distortion at input AC mains and precisely regulated DC output in buck, boost, buck-boost and multilevel modes with unidirectional and bidirectional power flow. This paper deals with a comprehensive review of improved power quality converters (IPQCs) configurations, control approaches, design features, selection of components, other related considerations, and their suitability and selection for specific applications. It is targeted to provide a wide spectrum on the status of IPQC technology to researchers, designers and application engineers working on switched-mode AC-DC converters. A classified list of more than 450 research publications on the state of art of IPQC is also given for a quick reference.

1,691 citations

01 Jan 1992
TL;DR: In this paper, a multilevel commutation cell is introduced for high-voltage power conversion, which can be applied to either choppers or voltage-source inverters and generalized to any number of switches.
Abstract: The authors discuss high-voltage power conversion. Conventional series connection and three-level voltage source inverter techniques are reviewed and compared. A novel versatile multilevel commutation cell is introduced: it is shown that this topology is safer and more simple to control, and delivers purer output waveforms. The authors show how this technique can be applied to either choppers or voltage-source inverters and generalized to any number of switches.<>

1,202 citations

Journal ArticleDOI
TL;DR: In this article, three-phase power factor correction (PFC) rectifier topologies with sinusoidal input currents and controlled output voltage are derived from known single-phase PFC rectifier systems and/or passive 3-phase diode rectifiers, and their functionality and basic control concepts are briefly described.
Abstract: In the first part of this paper, three-phase power factor correction (PFC) rectifier topologies with sinusoidal input currents and controlled output voltage are derived from known single-phase PFC rectifier systems and/or passive three-phase diode rectifiers. The systems are classified into hybrid and fully active pulsewidth modulation boost-type or buck-type rectifiers, and their functionality and basic control concepts are briefly described. This facilitates the understanding of the operating principle of three-phase PFC rectifiers starting from single-phase systems, and organizes and completes the knowledge base with a new hybrid three-phase buck-type PFC rectifier topology denominated as Swiss Rectifier. Finally, core topics of future research on three-phase PFC rectifier systems are discussed, such as the analysis of novel hybrid buck-type PFC rectifier topologies, the direct input current control of buck-type systems, and the multi-objective optimization of PFC rectifier systems. The second part of this paper is dedicated to a comparative evaluation of four rectifier systems offering a high potential for industrial applications based on simple and demonstrative performance metrics concerning the semiconductor stresses, the loading and volume of the main passive components, the differential mode and common mode electromagnetic interference noise level, and ultimately the achievable converter efficiency and power density. The results are substantiated with selected examples of hardware prototypes that are optimized for efficiency and/or power density.

679 citations

Journal ArticleDOI
TL;DR: In this article, the authors derived new expressions for specific on-resistance in power semiconductor devices, such as heterojunction MOSFETs, using GaN and compared these new expressions to the previous literature.
Abstract: An advantage for some wide bandgap materials, that is often overlooked, is that the thermal coefficient of expansion (CTE) is better matched to the ceramics in use for packaging technology. It is shown that the optimal choice for uni-polar devices is clearly GaN. It is further shown that the future optimal choice for bipolar devices is C (diamond) owing to the large bandgap, high thermal conductivity, and large electron and hole mobilities. A new expression relating the critical electric field for breakdown in abrupt junctions to the material bandgap energy is derived and is further used to derive new expressions for specific on-resistance in power semiconductor devices. These new expressions are compared to the previous literature and the efficacy of specific power devices, such as heterojunction MOSFETs, using GaN are discussed.

477 citations