AC motor speed control apparatus

Details AC motor speed control apparatus AC motor speed control apparatus

1986-10-30

1988-06-14

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318768, 318779, 318800, 363 79, 363 80, 363 97, 363160, H02P 126, H02P 142, H02P 318, H02P 528

Patent

active

047514477

ABSTRACT:
The present invention discloses a speed control apparatus for an AC motor which vector-controls, for example, a drive current of the AC motor such as an induction motor, synchronous motor and AC commutator motor with a feedback current control loop providing an inverter utilizing a semiconductor element for power amplification such as power transistor and compensates for non-linear current characteristic of the drive current generated by dead time resulting from ignition delay of a semiconductor element with a current compensation control element provided within the current control loop, thereby controlling the rotation speed and command response speed of an AC motor.

REFERENCES:
patent: 4555755 (1985-11-01), Kurosawa et al.

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