Welding inverters
Inverter units appeared on the market during the second half of the 1970s. In a primary-
switched inverter unit, the 50 Hz mains supply is first rectified and then, using power
semiconductors, is turned back into AC at a higher frequency, usually in the range
100 kHz. This reduces the weight of the transformer and inductor to a fraction of what is
needed for a 50 Hz unit, making the power unit small and portable. Low losses result in
high efficiency, to the order of 80-90 %. The high working frequency also allows the
unit to be controlled at a speed that is comparable with the rapid processes occurring in
connection with droplet transfer in the arc. Such units can therefore have excellent
performance. In comparison with traditional power sources, inverter units offer the
following advantages:
Low weight and small size
Good weldiig performance
Several welding methods can be used with the same power source
High efficiency
Supplied By RIHUI Ceramic Welding Backing
Date: 2023-04-10 hits: 508 Return
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