Inverter protected against fault currents, especially for motor control

摘要

The invention relates to a multi-phase inverter equipped with current sensors and with a processing and control circuit. A first current sensor (44) is associated with the high (14H) or low (14L) channel on the DC energy source side (11). A second current sensor (45) is associated with high and low conductors (42H, 42L) specific to free wheel diodes. A third current sensor (46 or 46a) may also be present in order to detect the earth leakage currents. Application to motor controls. IMAGE