2/6 pole single-phase induction motor having shared windings
AssigneeEmerson Electric Co.
InventorRenyan William Fei
Life of this patent
Estimating the term…
Abstract
A multi-speed single-phase induction motor including a stator having a main winding selectively adapted for 2n-pole operation and 6n-pole operation, where n is an integer. The main winding includes a plurality of coil sets. The motor is configured to energize at least one of the coil sets during 2n-pole operation and during 6n-pole operation.
Claims29
A multi-speed single-phase induction motor comprising a stator, the stator including a main winding selectively adapted for 2n-pole operation and 6n-pole operation, where n is an integer, the main winding including at least a first winding portion and a second winding portion, the first winding portion and the second winding portion each including one or more coil sets, the motor being configured to electrically connect the first winding portion and the second winding portion in series during one of the 2n-pole operation and the 6n-pole operation, and to electrically connect the first winding portion and the second winding portion in parallel during the other of the 2n-pole operation and the 6n-pole operation, wherein current flows through all the coil sets of the first winding portion in a first direction when the first winding portion and the second winding portion are connected in series, and through all the coil sets of the first winding portion in a second direction opposite the first direction when the first winding portion and the second winding portion are connected in parallel.
A multi-speed single-phase induction motor comprising a stator, and a plurality of switches including a first single-pole, single throw switch and a first single-pole, double throw switch, the stator including a main winding selectively adapted for 2n-pole operation and 6n-pole operation, where n is an integer, the main winding including at least a first winding portion and a second winding portion, the motor being configured to electrically connect the first winding portion and the second winding portion in series during one of the 2n-pole operation and the 6n-pole operation, and to electrically connect the first winding portion and the second winding portion in parallel during the other of the 2n-pole operation and the 6n-pole operation using only the first single-pole, single throw switch and the first single-pole, double throw switch.
A multi-speed single-phase induction motor comprising a stator, the stator including a main winding selectively adapted for 2n-pole operation and 6n-pole operation, where n is an integer, the main winding including at least a first winding portion and a second winding portion, the first winding portion having substantially the same number of effective turns as the second winding portion, the first winding portion having a different number of actual turns than the second winding portion, the motor being configured to electrically connect the first winding portion and the second winding portion in series during one of the 2n-pole operation and the 6n-pole operation, and to electrically connect the first winding portion and the second winding portion in parallel during the other of the 2n-pole operation and the 6n-pole operation.
Dependencies are inferred from the claim text.