Control module for static frequency changer or converter bridge for commutation of electric motor currents has pulse source providing switching pulses for series switches in each converter path dependent on rotor position

摘要

The control module (CRT) has a pulse source (PG) providing switching pulses for 2 series switches in each bridge path of the frequency converter bridge (UM), in dependence on the rotor position of the electric motor (MO), for controlling the output voltages supplied to the motor windings by varying the pulse width of the switching pulses. Also included are Independent claims for the following: (a) a frequency converter bridge for an electric motor; (b) a ventilator module with an electric drive motor supplied via a frequency converter bridge