Source impedance measurement for motor control

Details Source impedance measurement for motor control Source impedance measurement for motor control

1996-07-17

1998-01-06

Ro, Bentsu

Electricity: motive power systems

With signals, meters, recorders or testing devices

324153, 324771, G01R 3136

Patent

active

057059055

ABSTRACT:
A power inverter assembly for a three-phase motor includes a resistor of known resistance which is capable of being switched in between the positive and negative DC bus lines that supply power to the power control electronics. When the resistor is switched in, a voltage drop across the bus lines is observed. The magnitude of this voltage drop is then used to determine a percent impedance value which indicates whether the source impedance is sufficient.

REFERENCES:
patent: 3976868 (1976-08-01), Lane
patent: 4042830 (1977-08-01), Kellenbenz et al.
patent: 5329222 (1994-07-01), Gyugyi et al.
patent: 5345200 (1994-09-01), Reif

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