Method and apparatus for reducing a current break in a leg that

Details Method and apparatus for reducing a current break in a leg that Method and apparatus for reducing a current break in a leg that

1989-04-14

1991-03-05

Smith, Jr., David

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

H02P 540, H02K 1910

Patent

active

049980530

ABSTRACT:
A method for reducing a current break in a leg of a three-phase block current-fed synchronous machine that is not participating in a commutation while the currents in the other two legs are commutating. A triangular high frequency sampling voltage from a pulse frequency generator of a control unit for the converter that feeds the synchronous machine is always shorted at the beginning of the commutation for a predetermined synchronization time. The torque ripple of a three-phase feed drive is reduced using this method and the circuit arrangement for carrying out the method.

REFERENCES:
patent: 4565956 (1986-01-01), Zimmermann et al.
patent: 4581569 (1986-04-01), Fujioka et al.
patent: 4714878 (1987-12-01), Steinigweg
patent: 4761599 (1988-08-01), Yasunobo et al.
patent: 4777414 (1988-10-01), Storath et al.

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