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Energies

   
Inicio  /  Energies  /  Vol: 8 Núm: 6Pages4 Par: June (2015)  /  Artículo
ARTÍCULO
TITULO

Current Mode Control for LLC Series Resonant DC-to-DC Converters

Jinhaeng Jang    
Syam Kumar Pidaparthy and Byungcho Choi    

Resumen

Conventional voltage mode control only offers limited performance for LLC series resonant DC-to-DC converters experiencing wide variations in operational conditions. When the existing voltage mode control is employed, the closed-loop performance of the converter is directly affected by unavoidable changes in power stage dynamics. Thus, a specific control design optimized at one particular operating point could become unacceptable when the operational condition is varied. This paper presents a new current mode control scheme which could consistently provide good closed-loop performance for LLC resonant converters for the entire operational range. The proposed control scheme employs an additional feedback from the current of the resonant tank network to overcome the limitation of the existing voltage mode control. The superiority of the proposed current mode control over the conventional voltage mode control is verified using an experimental 150 W LLC series resonant DC-to-DC converter.

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MATERIAS
INFRAESTRUCTURA

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