Design of a transcutaneous power regulator for artificial hearts

Kam Cheung Tang; Siu Chung Wong; Chi Kong Tse

doi:10.1109/PEDG.2010.5545916

Design of a transcutaneous power regulator for artificial hearts

Kam Cheung Tang, Siu Chung Wong, Chi Kong Tse

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

4 Citations (Scopus)

Abstract

Recently, a high efficiency transcutaneous power regulator for artificial heart with PWM-PLL control has been proposed in the literature. In this paper, a new method of sensing the output voltage inside the human body utilizing the same power transcutaneous transformer as signal transmission media is introduced. The feedback signal is modulated in the secondary at a frequency band above the PWM-PLL cut-off frequency and below the converter switching frequency. In this way, the feedback signal can be demodulated from the primary current measured. A SPICE macromodel for the resonant converter is developed to help designing the control loop and the selection of modulation-demodulation frequency banks. Hardware prototype using single-chip DSP together with analog filters was built and control software was implemented as DSP program codes. PLL switching frequency locking function is done by using on-chip analog comparator, it saves extra hardware for PLL control. The voltage loop control algorithm uses a modified PI controller with input voltage feed-forward and output loading estimation.

Original language	English
Title of host publication	2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010
Pages	89-95
Number of pages	7
DOIs	https://doi.org/10.1109/PEDG.2010.5545916
Publication status	Published - 17 Sept 2010
Event	2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010 - Hefei, China Duration: 16 Jun 2010 → 18 Jun 2010

Conference

Conference	2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010
Country/Territory	China
City	Hefei
Period	16/06/10 → 18/06/10

Keywords

Digital control
Phase-locked loop (PLL)
Resonant converter
Transcutaneous power control

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

More information

10.1109/PEDG.2010.5545916

Cite this

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title = "Design of a transcutaneous power regulator for artificial hearts",

abstract = "Recently, a high efficiency transcutaneous power regulator for artificial heart with PWM-PLL control has been proposed in the literature. In this paper, a new method of sensing the output voltage inside the human body utilizing the same power transcutaneous transformer as signal transmission media is introduced. The feedback signal is modulated in the secondary at a frequency band above the PWM-PLL cut-off frequency and below the converter switching frequency. In this way, the feedback signal can be demodulated from the primary current measured. A SPICE macromodel for the resonant converter is developed to help designing the control loop and the selection of modulation-demodulation frequency banks. Hardware prototype using single-chip DSP together with analog filters was built and control software was implemented as DSP program codes. PLL switching frequency locking function is done by using on-chip analog comparator, it saves extra hardware for PLL control. The voltage loop control algorithm uses a modified PI controller with input voltage feed-forward and output loading estimation.",

keywords = "Digital control, Phase-locked loop (PLL), Resonant converter, Transcutaneous power control",

author = "Tang, {Kam Cheung} and Wong, {Siu Chung} and Tse, {Chi Kong}",

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Tang, KC, Wong, SC & Tse, CK 2010, Design of a transcutaneous power regulator for artificial hearts. in 2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010., 5545916, pp. 89-95, 2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010, Hefei, China, 16/06/10. https://doi.org/10.1109/PEDG.2010.5545916

Design of a transcutaneous power regulator for artificial hearts. / Tang, Kam Cheung; Wong, Siu Chung; Tse, Chi Kong.

2nd International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2010. 2010. p. 89-95 5545916.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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Design of a transcutaneous power regulator for artificial hearts

Abstract

Conference

Keywords

ASJC Scopus subject areas

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