| Summary: | 碩士 === 國立成功大學 === 電機工程學系碩博士班 === 100 === Electromagnetic tumor hyperthermia is a therapeutic method providing an alternative magnetic field using a high-frequency induction heating machine that can heat magnetic substances around tumor cells. If the magnetic substance is heated up to between 42℃and 45℃, it can destroy the tumor cells. The main objective of this thesis is to design a real-time variable-powered heating system that can control the current on the applicator. In addition, this system will detect the current feedback signal and stability control. The core of the system is based on a high-speed microcontroller using variable frequency and calculate boundary to control a full-bridge series-resonant circuit. The system provided a GUI program for user that can set system parameters and real-time monitor the state of the system. The experimental results show that the system can generate fixed and accurate current on the output, and the working frequency within the preset frequency bands in the range between 35 kHz and 250 kHz. In addition, the current can be control in the preset-value with variant less than +/- 10 A (peak to peak).
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