Torque Ripple Cancellation Algorithm Involving Supply Voltage Limit Constraint
First Claim
1. A system for reducing a torque ripple cancellation command, the system comprising:
- a current regulator that provides motor voltage commands to a motor;
a torque ripple cancellation module that generates a torque ripple cancellation command based on input currents to the current regulator;
a ramp-down command generator module that provides a ramp-down command to the torque ripple cancellation module, the ramp-down command is based on a voltage saturation indicator; and
a voltage saturation indicator generation module that generates a voltage saturation indicator signal, the voltage saturation indicator is based on a supply voltage signal and a motor voltage command.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for reducing a torque ripple cancellation command is provided and includes a current regulator that provides motor voltage commands to a motor, and a torque ripple cancellation module that generates a torque ripple cancellation command based on input currents to the current regulator. A ramp-down command generator module that provides a ramp-down command to the torque ripple cancellation module is also provided. The ramp-down command is based on a voltage saturation indicator, and a voltage saturation indicator generator that generates a voltage saturation indicator signal. The voltage saturation indicator signal is based on a supply voltage signal and a motor voltage command.
14 Citations
12 Claims
-
1. A system for reducing a torque ripple cancellation command, the system comprising:
-
a current regulator that provides motor voltage commands to a motor; a torque ripple cancellation module that generates a torque ripple cancellation command based on input currents to the current regulator; a ramp-down command generator module that provides a ramp-down command to the torque ripple cancellation module, the ramp-down command is based on a voltage saturation indicator; and a voltage saturation indicator generation module that generates a voltage saturation indicator signal, the voltage saturation indicator is based on a supply voltage signal and a motor voltage command. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method for reducing a torque ripple cancellation command, the method comprising:
-
providing motor voltage commands to a motor; generating a torque ripple cancellation command based on input currents; providing a ramp-down command to the torque ripple cancellation module, the ramp-down command is based on a voltage saturation indicator and a motor voltage command; and providing a voltage saturation indicator signal, the voltage saturation indicator signal is based on a supply voltage signal and a motor voltage command. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification