负载阻抗匹配的目的是为了使感应加热电源能够输出额定功率、提高效率。
Load matching is intended to make induction heating power to the rated output power, and improve efficiency.
这是因为电励磁的同步电动机可通过调节励磁电流来改变其磁场和功率因数，使输出的机械特性与负载特性相匹配。
Synchronous motor excitated magnet by direct current can make output mechanism specialities matched load specialities by means of adjusting exciting current to change magnetic field and power factor.
针对超声波电源需要解决的频率控制、功率控制和负载匹配三大重要技术问题分别进行了深入分析。
Three major technical issues related to ultrasonic power's performance are considered in this paper: including the frequency control, power control and load matching.
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