Inventors:
Robert Quincy Elliott - Cary NC, US
Michael Scott Britton - Fuquay Varina NC, US
Mark Andrew Sporer - Apex NC, US
Assignee:
Caterpillar S.A.R.L. - Geneva
International Classification:
H02H 7/08
US Classification:
361 29, 361 23, 361 31, 318430, 318268, 318772, 318784, 323208, 323209, 323276
Abstract:
A method of controlling in-rush current to a DC motor is disclosed. The method may include operating the DC motor in a first mode including applying back-EMF across a relay coil to maintain the relay in an open configuration when the back-EMF is below a predetermined voltage. The method may also include operating the DC motor in a second mode including applying the back-EMF across the relay coil to maintain the relay in a closed configuration when the back-EMF is equal to or above the predetermined voltage.