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GOVERNMENT COLLEGE OF ENGINEERING
CHANDRAPUR
Presentation by
Mr . Mohan Mehar
Guided By
Prof. D.V. Rojatkar Sir
Leakage Compensation Of
TRANSCUTANEOUS TRANSFORMER
CONTENT
Introduction
Proposed transcuteneous energy transfer scheme
Analysis of the Proposed Scheme
Determination of the Control Region
Design of the system
Control of the System
Advantages
Challanges
Conclusion
Referances.
INTRODUCTION
Transcutaneous transformer
Proposed Scheme for high Gv at variable load and K
Turns Ratio should be uniy
Analysis of the Proposed Scheme
• Gv and compensated frequency (w0)
• Gv and coupling coefficient (k)
• Determination of Control Region
For k=0.1
For k=0.4
For convertor Wr=1
For V0 Gain is function of Wr
Design of the SystemV0=24V I0min=0.5A Iomax=2.0A
Parameter Magnitude Specify
Size, Geometry, Core
Ferroxcube Pot Core 6656
3C8 Ferrite
OD 2.6 in, thickness 1.1 in
Air gap: 10–20 mm
Misalignment: 0–10 mm.
Quality Factor Q 2 to 8 Should be low to be least sensitive to GV
Comp.R.W0 120KHz for small size and high efficiency
Ll1 and Ll263.5µH each for T.R.=1 and
k=0.265
C1 and C2 27 nF each for T.R.=1 and k=0.265
Advantages
Increased Gv for variable load and K
Reduced Ll and Im.
High efficiency (90-98%) high power transmission (12-48W)
No Biological effect and infection
Minimum Configuration in thorax
Reliable
ZVSand ZCS
Applicable for wireless transmission
Challanges
High Cost
Thermal imapct limits usable coil
geometry
No. of Heartbeat
Conclusion
According to NCHS, 7,00,000 cardiovascular victims peryr.
33,600 TAH implant/yr
900 LVAS/yr
270/1000 lives can be saved.
Control Region for operating frequency determined.
Design procedure for reduced Ll and Im established.
No Biological effect and infection
Applicable for wireless transmission
[1] A. Ghahary and B. H. Cho, “Design of a transcutaneous energy
transmission system using a series resonant converter,” in IEEE Power
Electronics Specialists Conf. Rec., 1990, pp. 1–8.
[2] J. C. Schuder and H. E. Stephenson, “Energy transport to a coil
which
circumscribes a ferrite core and is implanted within the body,” IEEE
Trans. Bio-Med. Eng., vol. BME-12, nos. 3 and 4, pp. 154–163, 1965.
[3] J. C. Schuder, J. H. Gold, and H. E. Stephenson, “Ultra high power
electromagnetic energy transport into the body,” IEEE Amer. Soc. Artif.
Int. Organs, vol. 17, pp. 406–410, 1971
Referances