Patent 8395340 was granted and assigned to Dyson (company) on March, 2013 by the United States Patent and Trademark Office.
A control system for an electric machine, the control system including a current controller and a drive controller. The current controller includes an input, an output, a comparator and a latch. The comparator sets the latch when a voltage at the input exceeds a threshold, and the latch outputs an overcurrent signal when set. The drive controller then resets the latch after a predetermined period of time.