Design of Induction Heating System under Multi-loadsCondition

• Main Authors: Rong-Zong Syu, 許榮宗
• Other Authors: Jin-Maun Ho
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/34157334395683922048

碩士 === 中原大學 === 電機工程研究所 === 95 === Abstract Because of environmental consciousness, compared with conventional electric heating and gas heating which a large part of heat energy is lost, the induction heating has many advantages such as cleanliness, high-speed heating, high safety and better heating quality. On the other aspect, with advances of the latest power semiconductor devices, the switches of inverter can operate in higher frequency ranges, this bring the induction-heating systems to reach small, compact, and high efficient . In this study, a load series resonant induction heating system with voltage source full bridge inverter has been constructed and tested. The system can reach reducing switching losses, component stresses, and electromagnetic interference of power semiconductor devices. Since the characteristics of load change with variations of temperature, a Phase Locked Loop (PLL) technology has been adopted. By this, the heating system can operate in the most efficient state. Additionally, this research proposes a temperature control by temperature-sensing incorporating with phase-shift Pulse-Width-Modulated (PWM) technology. Finally, the operation characteristics and efficiency of the induction heating system are measured and analyzed.