Sensorless motor braking system

A control system for an electric motor, the system comprising:

• a motor control circuit for generating a motor control signal;
• a braking mechanism for adjusting the motor control signal to augment motor losses when the motor control circuit is operating in a braking mode, the braking mechanism including—
• a difference component for receiving a first signal containing motor reference speed information, for receiving a second signal containing actual speed information, and for generating a third signal containing information indicating a difference between the reference speed and the actual speed;
• and
• an integrating component for integrating the third signal and for generating a fourth signal representing the integrated third signal.

A motor control system comprising:

• control circuitry configured to generate a first control signal according to a target voltage and to generate a second control signal according to a target current;
• a first braking mechanism for modifying the first control signal to maximize motor losses;
• a second braking mechanism for modifying the second control signal to maximize motor losses;
• and
• a controller for switching operation of the motor control system between generating the first control signal and the second control signal.