Non-linear robust control of a series resonant DC/DC converter for bio-medical applications

Rangan, V. Kasturi; Helmicki, Arthur J.; Nebrigić, D.; Melvin, David; Glos, David L.

doi:10.1109/cca.1996.558981

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Separate papers address further engineering and design analysis issues for the transformers (21) and their control systems (22).…”

Section: Methodsmentioning

confidence: 99%

In Vivo Comparison of Two Enteric‐Pouch Power Transformers for Circulatory Support

Dl²,

Nebrigić

et al. 1997

Artificial Organs

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A defunctionalized ileal pouch is thin-walled (1-2 mm), well perfused (blood flow, 0.3-1.0 ml/g/min), and tactile-insensitive. If fixed within the abdominal wall and provided with a miniature stoma for primary wire entry, the heat dissipating capacity and achievable geometries could facilitate small efficient intra-to extracorporeal power transformers with virtually complete magnetic flux containment. Two transformers (A, weighing 102 gm with dual ferrite cores, intraluminal primary and extraluminal secondary each with 10 turns on its own crescentic ferrite core, 90 kHz, coupling coefficient k = 0.90-0.96; and B, 68 gm, a single flexible torroidal magnetic metallic tape core with attached 11 turn primary and free 14 turn serosal secondary, 14.7 kHz, k = 0.99) met the electrical and anatomic requirements. Each was implanted (minilaparotomy, coil-pouch fixation within abdominal musculature) in 4 dogs for 14-21 days to test the operative feasibility, electrical function, warming, and flux containment. For canine testing, wires were tunneled to a chewing-inaccessible site. Neither tissue necrosis, infection, provokable interference from contiguous metal, nor coil displacement were observed; secretions were retained in Group A pouches only. The mean power transmissions for the transformers were A: 24.90 & 1.50 W and B: 24.92 & 0.89 W, after operation for 7 days or more. The mean efficiencies were A: 75.6 * 0.1% total DCIDC, 96.2% coils and B: 80.4 + 0.1% total DC/DC, 96.2% coils. The peak skin surface magnetic fluxes for transformers A and B, both trivial at 1.7 and 1.2 G, respectively, were similar. Warming was 0.62 k 0.30"C in Group A and 0.73 f 0.19"C in Group B. The probability values were p < 0.5 (NS) for DC/DC efficiency and p > 0.10 (NS), for A versus B in all other areas of comparison. Observations for both were encouraging. Transformer B, with less mass, lower frequency, higher efficiency, and intrinsic invulnerability to displacement, was selected for longer term evaluation.

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“…Separate papers address further engineering and design analysis issues for the transformers (21) and their control systems (22).…”

Section: Methodsmentioning

confidence: 99%

In Vivo Comparison of Two Enteric‐Pouch Power Transformers for Circulatory Support

Dl²,

Nebrigić

et al. 1997

Artificial Organs

View full text Add to dashboard Cite

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Long Life Single Stage PFC/SLC Converter driving LEDs

Heidinger¹

2019

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Non-linear robust control of a series resonant DC/DC converter for bio-medical applications

Cited by 2 publications

References 9 publications

In Vivo Comparison of Two Enteric‐Pouch Power Transformers for Circulatory Support

In Vivo Comparison of Two Enteric‐Pouch Power Transformers for Circulatory Support

Long Life Single Stage PFC/SLC Converter driving LEDs

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