Photos
Book
Collection
Videos
Virtual Tours
Pin It Share

Emerson Repulsion Start Induction Run AC Motor


The Emerson 1901 ½ HP Single Phase AC motor.


The repulsion-start induction-run motor, starts as a repulsion motor and runs as an Induction motor.  The advantage of this starting scheme provided greater starting torque than a split phase motor could provide.  The repulsion start motor rotor is wound similar to a direct current armature.  The stator is energized creating an alternating magnetic field that runs through the rotor and induces a current in the rotor windings.  The commutator brushes are short-circuited, and the currents induced in the armature coils set up poles on the armature surface.  The brushes are set so that the poles are slightly out of line with the stator poles, and the mutual repulsion between like poles on the stator and armature produces the torque.  For more views of the motor and and a description of the starting sequence please watch our video on our video page or on you tube.

View our video on you tube.

 

 

Categories: Motors Collection
Tags: Motors

Author: ephf

Edmonton Power Historical Foundation is a non-profit society dedicated to preserving the history of electric power in the City of Edmonton and the Province of Alberta, for the education and entertainment of current and future generations.

Edmonton Power Historical Foundation

Hours of operation 2024

We are located on the grounds of the Leduc West Antique Museum. Travel 5 miles west of Leduc on Highway 39. Go north on Range Road 260 (Cohne Dale Road) for about 800 metres and the museum will be on your right. Our museum is now closed for the season, but 2023 was a great year and we are looking forward to an even better 2024. Here are the dates for the major events at Leduc West, when the  Edmonton Power Historical Foundation Museum will also be open:
Spring Swap Meet May 25 & May 26, 2024
LWAS Annual Exposition July 20 & July 21, 2024
Fall Harvest September 7 & September 8, 2024

 

Leave us a message

 
 
Top