Patent ID: 11863091
Assignee: EATON INTELLIGENT POWER LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A reduced voltage soft starter (RVSS) comprising:
a switching circuit configured to selectively couple an AC power source to a motor; and
a control circuit configured to sense voltages provided to the RVSS to produce first voltage signals, to sense phase currents of the motor to generate respective phase current signals for respective phases, to generate respective load-side line-to-neutral voltage signals for respective phases, to detect when the phase currents are within detection windows around zero current levels responsive to the phase current signals, and to notch the load-side line-to-neutral voltage signals based on the phase current signals to generate respective notched line-to-neutral voltage signals representative of respective line-to-neutral voltages of the motor.