当电弧炉电气系统在串联谐振点和并联谐振点附近时，均会出较大谐波电流，而串联谐振对系统的影响更大一些。

The arc furnace electric system will make appearance of more harmonic current at the series resonant point and the parallel resonant and influence of series resonant is larger for the system.

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本文研究了串联谐振、并联负载的准谐振零电流开关电源。

This paper researched the quasi-resonant zero-current switching power source of series-resonant and parallel-load.

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