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Título del libro: Ieee Energy Conversion Congress And Exposition: Energy Conversion Innovation For A Clean Energy Future, Ecce 2011, Proceedings
Título del capítulo: Digital control implementation to reduce the cost and improve the performance of the control stage of an industrial switch-mode power supply

Autores UNAM:

Autores externos:

Idioma:
Inglés
Año de publicación:
2011
Palabras clave:

Analog controls; BOOST converter; Control stage; Controlled system; Digital control; Digital controllers; Fixed frequency; Industrial power; Input voltage ranges; Input voltages; Optimized designs; Output-voltage ranges; Series resonant; Stable operation; Switch-mode power supplies; Variable frequencies; Cost reduction; DC-DC converters; Digital control systems; Electric converters; Energy conversion; Shape memory effect; Controllers


Resumen:

The main objective of this work is the design and implementation of the digital control stage of a 280W AC/DC industrial power supply in a single low-cost microcontroller to replace the analog control stage. The switch-mode power supply (SMPS) consists of a PFC boost converter with fixed frequency operation and a variable frequency LLC series resonant DC/DC converter. Input voltage range is 85VRMS-550VRMS and the output voltage range is 24V-28V. A digital controller is especially suitable for this kind of SMPS to implement its multiple functionalities and to keep the efficiency and the performance high over the wide range of input voltages. Additional advantages of the digital control are reliability and size. The optimized design and implementation of the digital control stage it is presented. Experimental results show the stable operation of the controlled system and an estimation of the cost reduction achieved with the digital control stage. © 2011 IEEE.


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