The principle and schematic diagram of closed-loop control of Siemens SM150 medium-pressure inverter pwm rectifier

The input voltage of the AC side can reach 3300 volts. It adopts a double PWM three-level back-to-back structure with diode midpoint clamp position.

Voltage level

The voltage of the incoming line on the AC side can reach 3300 volts.

Structural characteristics

Adopt a double PWM three-level back-to-back structure with diode midpoint clamp position type

Main power device

The main power device is an IGCT with a rated voltage of 4500 volts/4000 amps.

Control principle

This article mainly introduces the PWM rectifier control part of SM150...