DEVICE FOR FAILURE DETECTION IN STEP ELECTRIC DRIVE Russian patent published in 2014 - IPC H02P8/34 H02P8/36 

FIELD: electricity.

SUBSTANCE: invention refers to electric engineering and can be applied in systems with electric step drive based on three-phase, four-phase and six-phase step drives. Effect is extension of functional capabilities due to enabled switching and halt modes for motors with different number of phase windings, step motor operating in alternate cycling mode controlled by switching mode selection buses, and due to automatic failure detection during step motor operation by comparing codes of actual motor power supply, generated by known limit sensors of phase current and voltage with reference codes of backup data channel. In addition, failure detection device for electric step drive features second joint data output of reference switching combinations, digital comparator, new functional links listed in materials of the application.

EFFECT: broader functional capabilities.

2 dwg, 2 tbl