Electric motor control device

Details Electric motor control device Electric motor control device

2011-01-04

2011-01-04

Benson, Walter (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary and secondary circuits

C318S727000, C318S778000, C318S779000

Reexamination Certificate

active

07863853

ABSTRACT:
An excitation current processor of a current controller processes the excitation current corresponding to the magnetic flux instruction from the magnetic flux instruction processor. It multiplies this excitation current with a boost coefficient to obtain an excitation current instruction. Here, the boost coefficient is determined based on the difference obtained by subtracting the magnetic flux estimation value processed by the magnetic flux processor based on the excitation current feedback from the voltage conversion device from the magnetic flux instruction input from the magnetic flux instruction processor. Further, the boost coefficient can be found from the function of time from the start of the rise of the magnetic flux.

REFERENCES:
patent: 5659235 (1997-08-01), Yamada et al.
patent: 6275000 (2001-08-01), Nishimura
patent: 61-199487 (1986-09-01), None

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