Design of A2DOF Controller with Smith Predictor for LLC Current-Resonant DC-DC Converters

Tekehiro Suzuki; Kohji Higuchi; Kamon Jirasereeamornkul

doi:10.4028/www.scientific.net/AMM.781.422

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 781Design of A2DOF Controller with Smith Predictor...

Design of A2DOF Controller with Smith Predictor for LLC Current-Resonant DC-DC Converters

Abstract:

LLC current-resonant converters have greater non-linear characteristics as compared to conventional DC-DC converters. Thus controlling LLC converters is difficult. In particular, the influence of an input delay time isn’t negligible at heavy load. In this paper, an A2DOF (Approximate 2-Degree-Of Freedom) controller with Simith predictor is proposed to compensate the input delay time of LLC current-resonant DC-DC converter. Experimental studies using a microprocessor for the controller demonstrate that this type of digital controller is effective to suppress the influences of the input delay time and the output variations at the sudden load change.

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Periodical:

Applied Mechanics and Materials (Volume 781)

Pages:

422-426

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.781.422

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Online since:

August 2015

Authors:

Tekehiro Suzuki*, Kohji Higuchi, Kamon Jirasereeamornkul

Keywords:

Approximate 2DOF, Dc-Dc Converter, Digital Robust Control, Input Delay Time, LLC Current-Resonant, Micro-Processor, Smith Predictor

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References

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