Single-wire current-share paralleling of current-mode-controlled DC power supplies

Lin, Chang-Shiarn; Chen, Chern‐Lin

doi:10.1109/41.857958

Cited by 60 publications

(4 citation statements)

References 21 publications

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“…As for output-series systems, the Applied Mechanics and Materials Vol. 339 main voltage sharing methods are shared duty ratio method, master-slave set method, average voltage method [12,13]. However methods using hardware control usually complicate the system structure, and are not easy to be implemented.…”

Section: Controlling Methods For the Systemmentioning

confidence: 99%

Research on Controlling Method of High-Power Electromagnetic Transmitter Power Supply

2013

AMM

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High-power electromagnetic transmitter power supply is an important part of deep geophysical exploration equipment, especially in complex environments, where how to control the high accuracy and stable output of the power supply as well as the redundancy safety of the system become the key issue in its designing. A triple-loop control including inner current loop, outer voltage loop and load current forward feedback and a digitalized voltage/current sharing control method are proposed for the realization of the rapid, stable and highly accurate output of the system. System simulation and field geological exploration experiments demonstrate the effectiveness of the control method which could ensure both the systems excellent stability and the outputs accuracy.

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Section: Controlling Methods For the Systemmentioning

confidence: 99%

Research on Controlling Method of High-Power Electromagnetic Transmitter Power Supply

2013

AMM

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“…The resonant current in each phase is indicative of the different load levels in different phases, and the series resonant capacitor is adjusted by the SCC to ensure uniform current-sharing across all phases. The current-sharing problem has been thoroughly studied, and various current-sharing methods have been proposed, such as the droop control method [89][90] , average current method [91] , and master slave control method [92] . These methods ensure that data center applications achieve accurate current sharing while maintaining a wide input voltage range and that the interleaved modular structure enables low stress on the output capacitor.…”

Section: Modular Structurementioning

confidence: 99%

A Review of Isolated Bidirectional DC-DC Converters for Data Centers

Chen,

Zhang,

et al. 2023

Chin. J. Electr. Eng.

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In today's fast-paced, information-driven world, data centers can offer high-speed, intricate capabilities on a larger scale owing to the ever-growing demand for networks and information systems. Because data centers process and transmit information, stability and reliability are important. Data center power supply architectures rely heavily on isolated bidirectional DC-DC converters to ensure safety and stability. For the smooth operation of a data center, the power supply must be reliable and uninterrupted. In this study, we summarize the basic principle, topology, switch conversion strategy, and control technology of the existing isolated bidirectional DC-DC converters. Subsequently, existing research results and problems with isolated bidirectional DC-DC converters are reviewed. Finally, future trends in the development of isolated bidirectional DC-DC converters for data centers are presented, which offer valuable insights for solving engineering obstacles and future research directions in the field.

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“…El control s'ha realitzat utilitzant un esquema de control democràtic, que decideix el corrent de cada mòdul segons la mitja de mòduls actius. Els harmònics de corrent que eliminen de la xarxa són subministrats a parts iguals per cada un dels filtres actius connectats [Chang00] [Matas03]. S'utilitza una línia de control comú a tots els convertidors, que porta la informació necessària per tal de repartir els corrents de forma equitativa, se'l denomina "bus de compartició de càrrega" (current sharing).…”

Section: Control Democràticunclassified

Aplicació de tècniques de control no lineal per a convertidors electrònics de potència amb consignes variables en el temps

Miret Tomàs

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El principal objetivo de esta Tesis ha sido establecer nuevas estrategias de control para convertidores de potencia simples y paralelizados, que siguen consignes variables en el tiempo. En la Tesis Doctoral se propone una metodología para la síntesis de controladores basados en la linealització por realimentación usando el promediado de estados del convertidor. Esta técnica presenta la ventaja de conseguir controladores sencillos de implementar y que no necesitan sensado de corriente. Esta técnica se ha probado con éxito obteniendo resultados satisfactorios para el caso de seguimiento de señal en convertidores CC/CA y CA/CC, y en la paralelización de estos convertidores. Los objetivos de la investigación han sido los siguientes: a) La síntesis de controladores basados en el modo deslizante y la linealización por realimentación. b) La aplicación de estas estrategias de control para onduladores, filtros activos y rectificadores con elevado factor de potencia. c) La extensión de estos controles a sistemas modulares formados por diversos convertidores en paralelo. d) La simulación de los controles y verificación experimental de los mas representativos, implementándolos digitalmente en una DSP. Estos objetivos se han desarrollado y han quedado plasmados en la redacción de esta Tesis Doctoral y en las diversas publicaciones que se citan en la bibliografía particular de los autores. La metodología que hemos usado en nuestra investigación se puede desglosar en los siguientes puntos: 1. Modelado del convertidor o sistema de convertidores. 2. Síntesis de los controladores utilizando las técnicas de control seleccionadas para cada casuística. 3. Simulación del sistema, obteniendo así sus características dinámicas, a la vez que se valida el controlador. 4. Verificación experimental de los resultados de simulación. Las diferentes fases de la Tesis se han desarrollado siguiendo aproximadamente el orden de los capítulos del documento: El primer capítulo expone el alcance de la Tesis y el estado del arte en la tecnología de control de los sistemas que se trataran. En el segundo capítulo se exponen las ideas del seguimiento en la teoría del control. En el tercer capítulo se desarrolla la teoría básica del control no lineal, haciendo especial énfasis en el control en modo deslizante y el control de linealización por realimentación, que serán aplicados a diversos tipos de convertidores electrónicos de potencia. En el cuarto capítulo se aplican las técnicas de control no lineal a los rectificadores con elevado factor de potencia. En el quinto capítulo se trata de los onduladores y se desarrollan diversos controles no lineales para su control. En el sexto capítulo se trata de los filtros activos correctores de la distorsión harmónica de la corriente de red y diversos controles aplicados. En el séptimo capítulo se trata del diseño de controles para la paralelización de convertidores de potencia con consignas variables en el tiempo. El último capítulo aborda las conclusiones de la Tesis y los futuros caminos para la investigación en este campo abiertos por la Tesis doctoral. The main objective of this Thesis was obtain new control strategies for simple power converters and for converters in parallel. We propose a methodology to synthesize controllers based in feedback linearization, using the converter state averaging. This technique presents the advantage of obtain simple implementation controllers, and that avoids the use of current sensors. This technique was successfully used in this work, with satisfying results for AC/DC converters and DC/AC converters. Good performance was obtained too in the control of multi-module systems, composed of some converters in parallel. The research objectives of the Thesis are the following: a) The controller synthesis, using sliding mode control and feedback linearization. b) The application of this control strategies to inverters, active filters and rectifiers with unity power factor. c) The extension of this controls to modular systems. d) The controller simulation and experimental verification, implementing the control in a DSP platform. Our research methodology was: a) The converter modeling. b) The controller synthesis, using the optimal control techniques for each purpose. c) The system simulation, obtaining its dynamic characteristics to validate the controller. d) The experimental verification of the simulation results. The different stages of the Thesis were developed following approximately the chapter's order of the Thesis document: The first chapter exposes the objectives of the Thesis. The state of the art in the control technology for the converters to study is presented too. The second chapter explains the main objectives in the control theory for signal following converters. The third chapter develops the basic non-linear control theory, with special emphasis in sliding mode control and feedback linearization control. In the fourth chapter the non-linear techniques are used for unity power factor rectifier control synthesis. In the fifth chapter we develop some non-linear controllers for inverters. In the sixth chapter some active filter controls are designed. In the seventh chapter we develop non-linear controllers for power converters in parallel. The conclusions and future perspectives are exposed in the last chapter.

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Single-wire current-share paralleling of current-mode-controlled DC power supplies

Cited by 60 publications

References 21 publications

Research on Controlling Method of High-Power Electromagnetic Transmitter Power Supply

Research on Controlling Method of High-Power Electromagnetic Transmitter Power Supply

A Review of Isolated Bidirectional DC-DC Converters for Data Centers

Aplicació de tècniques de control no lineal per a convertidors electrònics de potència amb consignes variables en el temps

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