Operating control device and method for wound-rotor induction ma

Details Operating control device and method for wound-rotor induction ma Operating control device and method for wound-rotor induction ma

1992-06-23

1993-03-02

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Secondary circuit control

318811, 318823, 318732, H02P 540

Patent

active

051912732

ABSTRACT:
This invention proposes an operating control device and method for a winding type induction machine that ensures that the harmonic components naturally present in the primary voltage of a winding type induction machine, do not correspond to the antiresonance point of the impedance characteristic of the transmission system to which the winding type induction machine is connected. Those corresponding harmonic components are eliminated from the primary winding of the winding type induction machine by applying appropriate voltage command values to a PWM controlled inverter if there is distortion of the primary voltage or if the transmission system is being changed over.

REFERENCES:
patent: 3426260 (1969-02-01), Lee et al.
patent: 3439245 (1969-04-01), Perdue
patent: 4364004 (1982-12-01), Bourbeau
patent: 4388579 (1983-06-01), Ellis
patent: 4437051 (1984-03-01), Moto et al.
patent: 4617675 (1986-10-01), Ashikaga et al.

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