Patent ID: 11888418
Assignee: HAMILTON SUNDSTRAND CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A proportional integrator for control of a motor drive arranged to be connected in parallel with one or more other motor drives to drive a common load, the proportional integrator comprising:
means to receive an input command signal and to compare with a local measured signal from the motor drive and to output a local control signal for that motor drive, wherein the input command signal is a speed reference signal and the local measured signal is a local speed signal; and
means for adding a correction factor to the proportional integral function, the correction factor selected to balance the integral term dependent on a total of current reference commands from the motor drive and all motor drives connected in parallel with the motor drive, in use;
wherein the input command signal is a current reference signal and the local measured signal is a measured current signal, and wherein the global input signal is a global voltage reference based on a local voltage reference from the motor drive and all motor drives connected in parallel with the motor drive, in use.