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Nonlinear Continuous Time Control of a Bidirectional Coupled-Inductor Cuk Converter
Joan MAJO Luis MARTINEZ Alberto POVEDA Luis Garca de VICUA Francisco GUINJOAN Antonio F. SANCHEZ Jean Claude MARPINARD Max VALENTIN
IEICE TRANSACTIONS on Communications
Publication Date: 1992/11/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Telecommunications Energy Systems and Switching Power Converters)
nonlinear control, large-signal, converter dc-dc, coupled-inductor,
Full Text: PDF(682.9KB)>>
Under conditions of order reduction, a nonlinear control of a bidirectional coupled-inductor Cuk converter suitable for large-signal applications is presented. The converter is accurately modelled as a second order bilinear system and the conditions established for local stability. The nonlinear control law which is implemented by means of one analog divider, standard operational amplifiers and a pulse-width modulator. As a result, the output variable follows proportionally the reference signal, thus allowing the obtention of different types of power waveforms in the converter output. Experimental results verify the theoretical predictions.