Controlled current inverter and motor control system

Details Controlled current inverter and motor control system Controlled current inverter and motor control system

1978-04-10

1980-10-28

Truhe, J. V.

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

318722, 318723, 318758, 318759, 318801, 318802, 318803, H02P 528, H02P 318, H02P 736

Patent

active

042309794

ABSTRACT:
A controlled current inverter system forms the basis of an a.c. motor drive system for furnishing the motor load with a variable frequency, variable magnitude a.c. current from an inverter which is supplied from a variable d.c. current source by way of a d.c. link including an inductor. Torque is the control parameter employed in the system and the motor speed and torque are controlled through the control of motor flux and motor current, by maintaining a controlled ratio between the direct and quadrature motor currents, through separate control paths to the d.c. source and the inverter. A third control path functioning on the difference between the desired and actual motor flux serves as a modifier to the main control paths to improve overall operation and control. Means associated with the basic control paths provide for dynamic braking of the motor.

REFERENCES:
patent: 3805135 (1974-04-01), Blaschke
patent: 3919609 (1975-11-01), Klautschek et al.
patent: 4044285 (1977-08-01), Plunkett et al.
patent: 4088935 (1978-05-01), D'Atre et al.

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