Rectification (AC → DC):

The single-phase 220V AC input first passes through a rectifier bridge and filter capacitors, where it is converted into smooth DC power.

Inversion (DC → AC):

The DC power is then supplied to a three-phase inverter bridge built with IGBTs (Insulated Gate Bipolar Transistors).

A high-speed DSP microprocessor controls the IGBTs with precise timing and control algorithms. Through PWM (Pulse Width Modulation) technology, the DC power is converted into three-phase AC power.

Output:

After inversion and modulation, the converter provides a stable three-phase 380V, sine-wave output. The microprocessor continuously controls the system to maintain balanced and stable three-phase output voltage.

The converter can be used for a wide range of three-phase equipment, depending on the equipment type, motor characteristics and required capacity.

Typical Applications