Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2009-06-16
2011-12-13
Ip, Paul (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S400320, C318S400330, C318S701000, C318S802000
Reexamination Certificate
active
08076881
ABSTRACT:
A system. The system includes a first module, a second module communicably connected to the first module, a third module communicably connected to the first module, and a fourth module communicably connected to the third module. The first module is configured for determining an angle. The angle is defined by a first rotating reference frame having an axis aligned with a permanent magnet flux of a permanent magnet motor, and a vector of a motor magnetizing flux of the permanent magnet motor. The second module is configured for defining a second rotating reference frame having an axis aligned with the vector, and for transforming a two-phase set of direct currents from the first rotating reference frame to the second rotating reference frame. The first and second rotating reference frames are synchronized. The third module is configured for generating a first direct current reference signal associated with the second rotating reference frame. The fourth module is configured for generating a second direct current reference signal associated with the second rotating reference frame. The first and second desired direct current reference signals are orthogonal.
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Hall David J.
Krefta Mark P.
Curtiss-Wright Electro-Mechanical Corp.
Ip Paul
Reed Smith LLP
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