High-Frequency Inverter Technique (HFDC)

Unlike the medium-frequency inverters which are of a similar design, high-frequency inverters allow driving of the power semiconductors of the inverter, however, not with 1 kHz but with 20 kHz, which means that the clock rate is 20 times higher. The use of HFCD systems improves, therefore, the quality of the welding current considerably.

The fundamental differences between high-frequency inverters and other power sources (alternating current, medium-frequency) are as follows:

3-phase balanced system load, no phase shifts
very low residual ripple of the welding current (40 kHz ripple)
smallest controllable unit of time ½ period = 0,025 milliseconds
suitable also for extremely short welding times
uninterrupted energy input into the weld nugget
ultrasmall, light-weight transformers (integrated into the SPATZH6000 housing)
highly appropriate for small part- and micro joining tasks

Our solutions:
Depending on the necessary welding power and the intended interface equipment, there are the high-frequency power sources SPATZH300, SPATZH300plus, SPATZH6000 as well as SPATZH6000plus and, for high-current applications, the DragSPATZ families to choose from.