Motor drive control with a single current sensor using space...

Details Motor drive control with a single current sensor using space... Motor drive control with a single current sensor using space...

2007-12-11

2007-12-11

Donovan, Lincoln (Department: 2837)

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

Analog armature control

C318S810000, C318S811000, C318S606000

Reexamination Certificate

active

11006460

ABSTRACT:
A drive system for a three phase brushless AC motor that is operative to optimize a transistor switching pattern to improve power output while allowing current measurement in all of the phases using a single sensor. This is achieved by defining a voltage demand vector where more than two states are required to meet a minimum state time requirement determined by the single sensor and calculating three or more state vectors that produce the demand vector while still allowing single current sensing.

REFERENCES:
patent: 4888533 (1989-12-01), Gotoh et al.
patent: 5486743 (1996-01-01), Nagai
patent: 2003/0173946 (2003-09-01), Liu et al.
patent: 1 096 659 (2001-05-01), None
patent: 1 289 632 (1972-09-01), None
patent: 2 246 674 (1992-02-01), None

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