Mf dc inverter

MFDC stands for Mid-Frequency Direct Current. MFDC welding uses power inverters to convert your AC power supply into inverted high-frequency power output. AC welding (alternating current) reverses its direction many times per second. A 60-hertz current will change its polarity 60 times every second.

Resistance welding with direct current (DC) using inverter technology (MFDC) reduces costs by improving quality, reducing maintenance, and increasing productivity. Switching from traditional alternative current (AC) to DC with inverters also reduces a range of facilities costs and improves the process.

Medium (till 1000Hz) Frequency Inverter Welders use millisecond pulse width modulation (switching) technology with closed-loop feedback to control the weld energy in sub-millisecond increments. Three phase input current is full wave rectified to DC and switched at 1kHz to produce an AC current at the primary of the welding transformer.

Like every welding technology, an Inverter (also often referred to as Mid-Frequency Direct Current ) has it's place. Many plants across the world have learned that an Inverter has many superior properties that make it worth the added upfront cost.

Transistor DC units tend to be larger and heavier than other resistance welding power supply technologies. Three Phase Inverter DC utilizes three-phase balanced input. Current is in full wave form rectified to DC and switch to 1000Hz or higher to produce AC supply to primary transformer. The current is rectified into DC for welding afterwards.

The weight and size of the MF transformer is only 1/3 of the AC type transformer. Suitable for robot welding system. Be able to weld material like aluminum, galvanized steel, etc. with good welding performance. Especially suitable for three-layer plate welding, ultrathin material welding and precision welding.