Method for operating an electric motor
AssigneeSchaeffler Technologies AG & Co. KG
InventorsErhard HODRUS, Christian Eberle, Alexander Rosch
Life of this patent
Estimating the term…
Abstract
A method for operating an electric motor having a stator and a rotor that can rotate relative to said stator while varying a rotor position, and a rotor position sensor for determining the rotor position, wherein injection signals are also used to estimate the rotor position, wherein if the rotor position sensor fails or if a rotor position sensor error is detected, the electric motor continues to be operated without a rotor position sensor using the estimated rotor position.
Claims14
A method for operating an electric motor having a stator and a rotor that can be rotated relative to said stator while varying a rotor position, and a rotor position sensor for determining the rotor position, the method comprising:
- using injection signals to estimate the rotor position, and using the estimated rotor position to continue to operate the electric motor if the rotor position sensor fails or if a rotor position sensor error is detected.
Dependencies are inferred from the claim text.