Testing inverter driven electric motor shut-off path

Details Testing inverter driven electric motor shut-off path Testing inverter driven electric motor shut-off path

2006-12-22

2009-06-09

Ip, Paul (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S276000, C318S434000, C318S400280, C324S762010

Reexamination Certificate

active

07545111

ABSTRACT:
A method for testing electric motor shut-off including injecting current into an electric motor, applying at least one of a short or an open to the electric motor for a predetermined length of time, calculating the rate of decay of the current and comparing rate of the decay with a predetermined decay criteria. In one implementation, a predefined sequence of opening and short circuiting the electric motor is used, and the shut-off path tests for the motor three phases can be verified with one test.

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