Voltage mode control with phase advancing for position...

Details Voltage mode control with phase advancing for position... Voltage mode control with phase advancing for position...

2008-01-29

2008-01-29

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Load control

C318S432000, C318S434000

Reexamination Certificate

active

11122687

ABSTRACT:
A method and system for controlling an electric machine using voltage mode control comprising: receiving a voltage command, the voltage command corresponding to a voltage control command for a position control loop, the position control loop configured to control a position of the electric machine; receiving a motor velocity signal; and determining a q-axis current. The method also includes computing a d-axis current to supplement the torque if a magnitude of a voltage supply for exciting the electric machine is not sufficient to provide a torque corresponding to the q-axis current, otherwise establishing the d-axis current at about zero; and generating command voltages for controlling the electric machine corresponding to the q-axis current and the d-axis current.

REFERENCES:
patent: 7053581 (2006-05-01), Chen et al.
patent: 2005/0212471 (2005-09-01), Patel et al.
patent: 2005/0285556 (2005-12-01), Chen et al.

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