Primary side control of load voltage for transcutaneous energy transmission

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• 作者：Yang Fu ; Liang Hu ; Xiaodong Ruan ; Xin Fu
• 关键词：Transcutaneous energy transmission ; Primary side control ; Artificial heart
• 刊名：Journal of Artificial Organs
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：19
• 期：1
• 页码：14-20
• 全文大小：2,212 KB
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• 作者单位：Yang Fu (1)
  Liang Hu (1)
  Xiaodong Ruan (1)
  Xin Fu (1)
  
  1. The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Zheda Road 38, Hangzhou, 310027, China
  
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Surgery
  Cardiac Surgery
  Biomedical Engineering
  Orthopedics
  Nephrology
  Hepatology
  
• 出版者：Springer Japan
• ISSN：1619-0904

文摘

Transcutaneous energy transmission (TET) is considered as a good way to wirelessly power the implanted devices in human bodies. The load voltage provided from the TET to the implanted device should be kept stable to ensure the device working well, which however, is easily affected by the required power variation for different body movements and coil-couple malposition accompanying skin peristalsis. Commonly, the load voltage applied onto the device should be measured and feedback for power is regulated by implanting sensing and communication units into the body, which causes additional energy cost, increased size and weight of the implanted device. This paper takes the TET for artificial heart as an example to propose a novel primary side control method of the load voltage for TET, which does not require any additional implanted components. In the method, sensing coils are used to measure the malposition between the transmitter coil (TC) and receiver coil, and the magnitude of the TC current outside the human body. The measurement results are used to estimate the load voltage inside the body through calculation, whose value provide a base to develop a PI control system to regulate the input power of TET for the load voltage stability. The proposed method is experimentally validated on an actual TET for artificial heart by varying its load in a wide range under serious coil-couple malposition. With applying the primary side control, the variation of the load voltage is reduced to only 25 % of that without the control.