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.
传统的可调整线性电源在输出电压低时，电源的大部分额定功率耗费在电源内部，变换效率很低，而且体积庞大笨重。
At low output voltage, the majority of the rated power of traditional adjustable linear power supply is wasted in the internal power supply and the conversion efficiency is low with huge volume.
另外，本文还就异步电机在非额定状态下运行时，输出功率的计算公式及如何实现效率优化等问题进行了讨论。
Moreover, this text discuss the calculation formula of the output power when motor is working at unrated circulation and how to realize excellent efficiency.
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