US 12,341,462 B2
Motor alignment control
John Emmanuel Atienza Tan, Antipolo (PH); Jhaebhee Mark Quiroz Calderon, Pasig (PH); Emmanuel Belen Antonio, Santo Tomas (PH); and John Henry Rementilla Puente, Cambridge (GB)
Assigned to POWER INTEGRATIONS, INC., San Jose, CA (US)
Filed by POWER INTEGRATIONS, INC., San Jose, CA (US)
Filed on Apr. 19, 2024, as Appl. No. 18/640,843.
Application 18/640,843 is a continuation of application No. 17/706,203, filed on Mar. 28, 2022, granted, now 11,996,795.
Prior Publication US 2024/0291406 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02P 6/26 (2016.01)
CPC H02P 6/26 (2016.02) 23 Claims
OG exemplary drawing
 
12. A system controller for aligning a motor drive system for a motor, comprising:
an input configured to receive a phase current sense signal representative of a phase current of the motor,
wherein the system controller is configured to perform operations comprising:
beginning an alignment sequence;
sampling the phase current sense signal;
comparing a sample of the phase current sense signal to a previous sample of the phase current sense signal;
tracking a maximum value of the phase current sense signal in response to the comparing of the sample to the previous sample of the phase current; and
comparing the maximum value of the phase current sense signal to the sample of the phase current sense signal;
detecting a decrease in the phase current sense signal in response to comparing the maximum value to the sample;
ending the alignment sequence in response to detecting the decrease; and
an output configured to transmit control signals to control operation of the motor drive system.