Research of a Novel Full-Digital Control ZVZCS Full-Bridge PWM DC / DC Converter Based on ARM7

Lin Tang; Xing Qiao Liu; Guang Yu Qiu

doi:10.4028/www.scientific.net/AMR.462.819

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 462Research of a Novel Full-Digital Control ZVZCS...

Research of a Novel Full-Digital Control ZVZCS Full-Bridge PWM DC / DC Converter Based on ARM7

Abstract:

A new full digital control method has been proposed. This method employed an advanced main circuit topology combining with an ARM MCU. Using the state space averaging method and following the method deriving the small-signal model of Buck converter, the small-signal characteristics model of DC/DC converter can be derived. Using no steady error quadratic optimal control method, the problem of PID parameters is transformed into solving optimal feedback coefficient matrix, the digital controller of full-bridge DC/DC converter can adjust the parameters online. The power supply can realize leading leg’s ZVS and lagging leg’s ZCS in a big load range. The whole system has concise hardware structure, reliable control method and good man-machine interface, so it has high practical value.

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Periodical:

Advanced Materials Research (Volume 462)

Pages:

819-825

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.462.819

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Online since:

February 2012

Authors:

Lin Tang, Xing Qiao Liu, Guang Yu Qiu

Keywords:

ARM, Digital Control, Quadratic-Optimal, ZVZCS

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