Method and control system for controlling a brushless electric motor

摘要

The method involves influencing modulation depth (A) with a compensation factor (k) for disturbance value compensation such that a product of intermediate circuit-direct current (DC) voltage (Uzk) and a resulting intermediate circuit-current (Izk) is kept constant in the intermediate circuit (6). Intermediate circuit-voltage is monitored with respect to size of an alternating component. The compensation factor for reducing the compensation is changed in case of reaching or exceeding preset limit values (Uzkac.max1) until an actual alternating component is lowered to or below the limit values. An independent claim is also included for a control system for brushless electronically commutated electric motor.