US 12,766,973 B2 · Method for determining a resolver offset

Abstract

A computer system is provided. The computer system comprises processing circuitry configured to: for each one of a pre-set positive speed value and a pre-set negative speed value: controlling the speed of an electrical machine to the pre-set speed value, short circuiting the electrical machine, and determining d,q currents and angular velocity of a rotor of the electrical machine during deceleration from the pre-set speed value, and wherein the processing circuitry is further configured to: determining a resolver offset based on the determined d, q currents and the determined angular velocity of the rotor.

Claims18

Dependent claims

A computer system comprising processing circuitry configured to:

for each one of a pre-set positive speed value and a pre-set negative speed value:
control the speed of an electrical machine to at least one of the pre-set speed values, short circuit the electrical machine, and determine d, q currents and angular velocity of a rotor of the electrical machine during deceleration from the at least one pre-set speed value, and wherein the processing circuitry is further configured to:
determine a resolver offset based on the determined d, q currents and the determined angular velocity of the rotor as a constant angular resolver offset and a speed-dependent angular resolver offset.

Dependencies are inferred from the claim text.

Method for determining a resolver offset

Life of this patent

Method for determining a resolver offset

Life of this patent

Abstract

Claims18