Control apparatus for AC motor

Details Control apparatus for AC motor Control apparatus for AC motor

1996-11-19

1998-03-31

Ip, Paul

Electricity: motive power systems

Induction motor systems

Primary circuit control

318804, 318805, H02P 2100, H02P 540

Patent

active

057342512

ABSTRACT:
A control apparatus for conducting a variable speed control of an AC motor by controlling an M-axis component and a T-axis component of a current flowing through the AC motor. The control apparatus comprises: M-axis current regulator for executing proportional plus integral computation on a difference between an actual value of the M-axis component and an M-axis current reference value to obtain an M-axis proportional value and an M-axis integration value, and for determining an M-axis voltage reference value by adding the M-axis proportional value to the M-axis integration value; T-axis current regulator for executing proportional plus integral computation on a difference between an actual value of the T-axis component and a T-axis current reference value to obtain a T-axis proportional value and a T-axis integration value, and for determining a T-axis voltage reference value by adding the T-axis proportional value to the T-axis integration value; and a renewal coefficient computing device for computing a vector sum of the M-axis voltage reference value and the T-axis voltage reference value, and determining a renewal coefficient for renewing the M-axis integration value and the T-axis integration value based on the relation between the vector sum and a predetermined output voltage limit value.

REFERENCES:
patent: 3895275 (1975-07-01), Rostad
patent: 4887015 (1989-12-01), Kurakake et al.
patent: 4926105 (1990-05-01), Mischenko et al.
patent: 5272429 (1993-12-01), Lipo et al.
patent: 5334923 (1994-08-01), Lorenz et al.
patent: 5532570 (1996-07-01), Tajima et al.

Affiliated with

Also associated with

Rating

Control apparatus for AC motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control apparatus for AC motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control apparatus for AC motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-54641