重复经颅磁刺激器电容充电技术发展现状

Current progress of capacitor charging techniques for repetitive transcranial magnetic stimulation

经颅磁刺激(TMS)是一种非侵入式、无创无痛的神经检测和治疗技术。其中,重复经颅磁刺激(r TMS)具有调节病变区皮质兴奋性等复杂机制,在神经性疾病治疗研究方面具有巨大潜在价值,已经成为当今的研究热点。电容器充电技术是重复经颅磁刺激的核心技术,直接影响r TMS的性能,研制高效和可靠的电容充电电源成为r TMS技术发展的迫切需求。目前比较成熟的电容器充电技术中,高频开关变换器充电方式较其他方式具有明显的优势,随着电力电子器件的发展已成为当今的主流。本文首先详细介绍了两种高频变换器拓扑结构:PWM变换器和谐振变换器,随后从效率、充电速度、体积等几方面阐述了可用于r TMS系统的电容器充电电源技术的最新研究进展,最后指明了r TMS电源技术未来的发展方向。

Transcranial magnetic stimulation（TMS） is a non-invasive neural detection and treatment technique without causing the subject discomfort. Repetitive transcranial magnetic stimulation（rTMS） which has some complex regulatory mechanisms,such as regulating excitability of cortical areas,has great potential value in therapy research for neurological diseases,and it has become a current research hotspot. The capacitor charging technology is the core of repetitive transcranial magnetic stimulation,directly impacting on the performance of rTMS. Developing highly efficient and reliable capacitor charging power supply（ CCPS） becomes urgent requirements for the advancement of r TMS techniques. With the mushroom growth of power electronic devices,compared with the other two kinds of techniques,high frequency switching converter has become current mainstream. Firstly two topologies of high frequency converter,PWM converter and resonant convertor,are introduced in detail,and then the latest research progress of capacitor charging power supply,which is able to be applied in r TMS system,is expounded from efficiency,charging speed,volume and so on. In the end,the future development direction of capacitor charging power supply for r TMS system is indicated.