Research On The Technology Of High Frequency Inductive Heat Power Supply

With the high frequency induction heating power supply application Range Extension, the main topology circuits and the load-matching method of the traditional current-source inverter and voltage-source inverter are not suit for the new wider using, furthermore, the effects of the noises in practical industrial processes, which makes it difficult to phase locked. The power device can't work in the soft-switching, increased the power loss, reduced the reliability of the system, because of the above factors.First, the principle of the induction heating is studied, and then the technologies of the main topology circuits, load-matching method and phase locked-loop are investigated in depth, based on which the improved current-source inverter topology, CLC Load-Matching plan, anti-noise interference phase locked-loop are proposed, at the same time, experiments are performed to testify the advantages in performance .those research results are convenient to the engineering.