B31-500-12-AV

The B31 intelligent inverter unit is an assembly of a three-phase power inverter based on IGBT transistors, electrolytic filter capacitors and a control/protection circuit for the inverter and load.

The unit is designed for use as part of electric motor control converters, pulse transformers, induction heating systems and other systems with a powerful active inductive load.

The block performs the following functions:

- switching of power transistors in accordance with the logical control signals;

- formation of "dead" switching time;

- blocking the simultaneous activation of the half-bridge transistors;

- control of the inverter current with the output of an analog signal of the current value;

- overcurrent protection with a response threshold of 2 x Imax;

- overheating protection;

- over-voltage protection of the inverter;

- protection against undervoltage of the control circuit;

- output of status signals for protection operation by current, voltage, temperature;

- output of a ready status signal at a supply voltage corresponding to the norm;

- control of the phase current with the output of a galvanically isolated signal proportional to the current;

- the unit provides galvanic isolation of control circuits from power circuits with a strength of at least 4000 V (DC).