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

Claim 8:
9. 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 a line voltage provided to the switching circuit to produce a first voltage signal, to sense a current of the motor to generate a current signal, to transform the first voltage signal according to an ABC-dq0 transformation at a first angle to generate a component signal, to scale the component signal, and to transform the scaled component signal according to a dq0-ABC transformation at a second angle to generate load-side line-to-neutral voltage signals for respective phases; and
wherein the control circuit is configured to generate a second voltage signal by processing the load-side line-to-neutral voltage signals responsive to the current signal to compensate for switching by the switching circuit.