The experimental result demonstrates the prototype has good dynamic and static performance, higher efficiency(92%), higher power factor(0.997), and low THD(5.6%)
实验结果表明，样机具有良好的动静态性能，效率高达92%，功率因数高达0.997，而THD仅有5.6%。
There are many disadvantages for the conventional AC/DC convert, such as higher current harmonic and lower power factor.
传统AC/DC变换器往往具有电流谐波高、网络功率因数低等缺点。
Compared with the conventional TIG welding machine, this new inverter proves to have much higher efficiency and power factor, less volume and weight, and especially, more precise parameter control.
该焊机由于采用了中频逆变技术，使其效率和功率因数都有较大幅度的提高，不但减小了体积，减轻了重量，而且具有比传统TIG焊机更精密的控制、调节性能等。
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