Device for determining the parameter values for stator resistanc

Details Device for determining the parameter values for stator resistanc Device for determining the parameter values for stator resistanc

1981-09-08

1983-12-27

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318805, 324158MG, H02P 540

Patent

active

044233671

ABSTRACT:
Apparatus is disclosed wherein parameter values for the stator resistance, the main inductance and the stray inductance of an asynchronous machine is detected without using information about the rotor position. Thereby the apparatus consists of an EMF-forming circuit, an arithmetic control circuit, an arithmetic model circuit, and a control circuit. All circuits are coupled to form an overall model circuit designed according to a closed loop circuit to simulate the operational conditions of an asynchronous machine. In a balanced position of the control circuit the output signals of the control circuit represent the actual parameter values to be determined.

REFERENCES:
patent: 3909687 (1975-09-01), Abbondanti
patent: 3909688 (1975-09-01), Blaschke et al.
patent: 4282473 (1981-08-01), Dreiseitl et al.

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