Method and apparatus for current regulating in a voltage-injecti

Details Method and apparatus for current regulating in a voltage-injecti Method and apparatus for current regulating in a voltage-injecti

1994-07-08

1995-11-14

Martin, David S.

Electricity: motive power systems

Constant motor current, load and/or torque control

318800, 318808, H02P 700

Patent

active

054670004

ABSTRACT:
The present invention provides a current regulating method and associated apparatus for a voltage-injecting converter, wherein a flux-producing current component and a torque-producing current component of an actual current vector are regulated to corresponding components of a required current vector, whereby a precontrol variable is superimposed on each controller manipulated variable. According to the invention, the torque-producing controller manipulated variable acts on the flux-producing controller manipulated variable with delay as a function of a frequency variable, thereby providing a current regulating method which combines the advantages of two-component current regulation and active current regulation. This dual-action current regulation advantageously operates without requiring a structural switch between the two forms of current regulation.

REFERENCES:
patent: 5151853 (1992-08-01), Tatara et al.
patent: 5270498 (1993-12-01), Tanahashi

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