Patent ID: 9083277
Filing Date: 2015-07-14
Classification: H02P

Abstract:
1. A control device for a direct-current electric motor, comprising: a transistor having a first current conducting electrode coupled to a first pole of a power source, a second current conducting electrode coupled to a second pole of the power source via a winding of the motor, and a control electrode; and an electronic control unit comprising: a divider having a first input for receiving a signal of a predetermined power limit value P a selector having a first input coupled to the output of the divider, a second input for receiving a signal of a predetermined current value I a summing device having a first input coupled to the motor for receiving a signal of a current value I a control device having an input coupled to the output of the summing device and an output coupled to the control electrode of the transistor for controlling the transistor in response to the signal of the current error e wherein the current limit value I