Publication: Diseño, construcción y caracterización de un convertidor reductor síncrono con drivers aislados y control digital
Loading...
Identifiers
Publication date
2012-12
Defense date
2012-12-17
Authors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
Impact
Export
Abstract
El presente proyecto consiste en la realización del diseño eléctrico y físico de un convertidor CC/CC en funcionamiento como reductor síncrono. Al ser síncrono el convertidor, necesitará un circuito de mando para controlar los interruptores. Estos circuitos, también llamados drivers, serán módulos separados del convertidor proporcionando un aislamiento galvánico entre las etapas de control y de potencia, de manera que puedan ser utilizados en una estructura de convertidores modulares con conexión en serie de varios convertidores. Las señales de control de los interruptores serán implementadas mediante una FPGA. Para ello se diseñará un código en VHDL para simular su funcionamiento mediante el software Modelsim, y se adaptará con Xilinx ISE para su configuración en la FPGA. Para comprobar el correcto funcionamiento del diseño se realizarán varias pruebas en lazo abierto, así como en lazo cerrado, donde la realimentación permitirá fijar una tensión de salida determinada variando el ciclo de trabajo de las señales del convertidor. ______________________________________________________________________________________________________________
This final project consists of performing the electrical and physical design of a DC/DC converter operating as a synchronous buck converter. A synchronous converter needs a control circuit to establish the timing when a switch must be on or off. These circuits, also known as drivers, are modular designed so they can provide a galvanic isolation between the control unit and the power unit. This allows the usage of the drivers in a structure of modular converters connected in series. The control signals of the switches will be implemented by a FPGA. For this purpose it is necessary to design a VHDL code with Modelsim software, and afterwards the programming of the FPGA will be done with Xilinx ISE. In order to verify the proper operating of the system, it is important to test it in open loop and close loop, in which the output voltage could be fixed varying the duty cycle of the signals of the converter.
This final project consists of performing the electrical and physical design of a DC/DC converter operating as a synchronous buck converter. A synchronous converter needs a control circuit to establish the timing when a switch must be on or off. These circuits, also known as drivers, are modular designed so they can provide a galvanic isolation between the control unit and the power unit. This allows the usage of the drivers in a structure of modular converters connected in series. The control signals of the switches will be implemented by a FPGA. For this purpose it is necessary to design a VHDL code with Modelsim software, and afterwards the programming of the FPGA will be done with Xilinx ISE. In order to verify the proper operating of the system, it is important to test it in open loop and close loop, in which the output voltage could be fixed varying the duty cycle of the signals of the converter.
Description
Keywords
Electrónica de potencia, Convertidores de potencia, Reductor síncrono