Harness, Dickey & Pierce, P.L.C.
3T-Y winding connection for three phase multiple-speed motor
A three-phase, multi-speed electric induction motor assembly is configured to include a controller to change motor speeds. The motor assembly includes a stator core assembly, a pair of main winding coil groups corresponding with each phase, and a pair of selectable extra winding coil groups corresponding with each phase. During the lower-speed operation, the controller connects a first set of three leads to a power source such that only the main coil groups are energized. During the higher-speed operation, the controller connects a second set of three leads to the power source such that both the main coil groups and the selectable extra coil groups are energized.
Emerson Electric Co.
H H H H
H02K H02P H02P H02K
inventional inventional inventional inventional
Xin Vincent P. Pingshan
Li Fargo Cao