Method for identifying an overload current of an electric drive

Details Method for identifying an overload current of an electric drive Method for identifying an overload current of an electric drive

2006-10-17

2006-10-17

Ip, Paul (Department: 2837)

Electricity: motive power systems

Limitation of motor load, current, torque or force

C318S254100, C318S599000

Reexamination Certificate

active

07122984

ABSTRACT:
The invention relates to Method to detect a sluggishness or the blocking of an electric drive (3), which is triggered via a power semiconductor component (7). The electric drive (3) can be operated in both a partial load range (PWM timing signal<100%) as well as in a full load range (PWM timing signal=100%), but always as a function of the timing of the PWM signal (29, 30). An evaluation circuit (37) is connected with a micro-controller (25). Pulses generated within a time interval are detected in the evaluation circuit (37) from the current I flowing via the first power semiconductor component (7) and the number of detected pulses A1*, A2* are compared with a to-be-expected number of pulses A1, A2.

REFERENCES:
patent: 4873453 (1989-10-01), Schmerda et al.
patent: 5245523 (1993-09-01), Juzswik
patent: 5708343 (1998-01-01), Hara et al.
patent: 5710495 (1998-01-01), Skelton
patent: 5742142 (1998-04-01), Witt
patent: 5811948 (1998-09-01), Sato et al.
patent: 6054823 (2000-04-01), Collings et al.
patent: 6414459 (2002-07-01), Borho et al.
patent: 6512346 (2003-01-01), Yoshimura
patent: 6759820 (2004-07-01), Karwath
patent: 6825625 (2004-11-01), Karwath et al.
patent: 6891342 (2005-05-01), Nakamura et al.
patent: 6960896 (2005-11-01), Shu et al.
patent: 2003/0015979 (2003-01-01), Karwath
patent: 2005/0134244 (2005-06-01), Sanzo et al.
patent: 19732094 (1999-01-01), None
patent: 19732098 (1999-01-01), None
patent: 0572162 (1993-12-01), None

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