Controller for motor

Details Controller for motor Controller for motor

2007-03-21

2009-06-16

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Armature circuit control

C318S801000, C318S809000, C318S810000, C318S811000, C318S812000

Reexamination Certificate

active

07548038

ABSTRACT:
A controller for a motor is capable of reducing the amount of energization required to operate a motor under a predetermined condition, the motor having two rotors disposed around a rotating shaft. The controller includes an induced voltage constant command value determiner which determines an induced voltage constant command value (Ke_c) of a motor such that a difference (ΔVp) between a target voltage circle radius (Vp_target) and a magnitude (Vp) of the vector sum of a d-axis voltage command value and a q-axis voltage command value of the motor decreases, a rotor phase difference acquirer and a rotor phase difference command value determiner which change a rotor phase difference on the basis of the Ke_c, and a field weakening current correction value calculator which determines a field weakening correction current ΔId_vol on the basis of ΔVp and adds the determined ΔId_vol to the d-axis current command value in the case where Vp cannot be reduced to Vp_target or less by reducing Ke_c to a lower limit of a rotor phase difference changing range.

REFERENCES:
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patent: 6774591 (2004-08-01), Arimitsu et al.
patent: 6879125 (2005-04-01), Akatsu
patent: 2003/0062784 (2003-04-01), Arimitsu et al.
patent: 2002-204541 (2002-07-01), None

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