Circuit for forming an electrical quantity which is proportional

Details Circuit for forming an electrical quantity which is proportional Circuit for forming an electrical quantity which is proportional

1977-07-25

1978-10-10

Rubinson, Gene Z.

Electricity: motive power systems

With flywheel or massive rotary member

318189, 318227, H02P 736

Patent

active

041198930

ABSTRACT:
A circuit for forming an electrical quantity which is proportional to a flux component of a rotating field machine permitting an accurate measurement of the flux component during the starting up of the rotating field machine, the machine having for this purpose, two windings of which the first winding is suited for excitation and the second winding for taking off a voltage induced by the excitation, the circuit including an integrator preceded by an adder to which are fed as input variables the phase current, the time derivative of the same, the phase voltage of the rotating field machine, and the induced voltage, with a null regulator which can be switched on via an auxiliary switch after the excitation is switched on connected into the feedback path of the integrator, and a quantity proportional to the flux component taken off at the output of the integrator.

REFERENCES:
patent: 3512067 (1970-05-01), Landau
patent: 3593083 (1971-07-01), Blaschke
patent: 4041361 (1977-08-01), Cornell
patent: 4044284 (1977-08-01), Plunkett et al.

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