In electrical circuits high current means higher failure probabilities and higher losses. All current on a parallel resonance converter is much lower in comparison with serial resonance converter. The serial resonance current is approx. 5 times more than the parallel one. Therefore, in serial resonance when high powers are needed, it is necessary to work close to the limit current values of thyristors.

On the other hand, the spare parts cost for parallel resonance converters are far cheaper than the alternative one.