Back to results
US 11,456,690 B2Granted
Pulse-controlled inverter with a variable speed-dependent switching frequency
Assigneeebm-papst Mulfingen GmbH & Co. KG
InventorMarco Weckert
Life of this patent
Estimating the term…
Abstract
A pulse-controlled inverter with a variably controlled switching frequency for generating a sinusoidal alternating current for a motor. A control device is provided to control the switching frequency fswitch of the pulse-controlled inverter as a function of the speed n of the motor.
Claims13
A pulse-controlled inverter with variably controlled switching frequency for generating a sinusoidal alternating current for a motor comprising:
- a control device is provided and designed as intended to regulate the switching frequency fswitch of the pulse-controlled inverter as a function of the speed n of the motor,
- wherein the switching frequency fswitch of the pulse-controlled inverter is directly coupled to the detected speed of the operated motor, and
- wherein the switching frequency fswitch of the pulse-controlled inverter is controlled according to a step function having one or more steps based on the speed n of the coupled motor, wherein a fixed switching frequency fswitch,i of the pulse-controlled inverter is set for a predetermined speed range ni.
A pulse-controlled inverter with variably controlled switching frequency for generating a sinusoidal alternating current for a motor comprising:
- a control device is provided and designed as intended to regulate the switching frequency fswitch of the pulse-controlled inverter as a function of the speed n of the motor,
- wherein the switching frequency fswitch of the pulse-controlled inverter is directly coupled to the detected speed of the operated motor, and
- wherein the switching frequency fswitch of the pulse-controlled inverter is controlled according to a non-linear function as a function of the speed n of the coupled motor.
Dependencies are inferred from the claim text.