Abstract: In a polyphase machine, being either a motor or a generator, there is provided a stator core having main stator windings and control windings. In the example of a squirrel cage induction motor these windings are wound about the stator core and the main windings have a capacitor connected in series with each such winding. In a three phase motor the control windings wound on the stator have currents in each phase which are substantially in phase at no load with the currents of the corresponding radially adjacent the main windings. Such currents become out of phase with their main winding currents as the load increases. The control windings are wound in an opposite sense to the corresponding main windings such that at low load the net flux density is low and as the load increases the flux density increases.

Abstract: In a polyphase machine, being either a motor or a generator, there is provided a stator core having main stator windings wound about the stator core and main windings having a capacitor connected in series with each winding of the core. Switches are provided for each winding, and a trigger source for the switches operates with the capacitor and windings to ensure sequential current flow in opposite directions across the windings. Variable frequency pulses from a trigger results in a variable speed machine. With control windings wound on the stator, oppositely to the main windings there are currents in each phase which are substantially in-phase at no load with the currents of the corresponding radially adjacent the main windings. Such currents become out of phase with their main winding currents as the load increases. At low load the net flux density is low and as the load increases the flux density increases.

Abstract: A polyphase motor is disclosed in which each coil of the stator winding of, for example, a squirrel cage induction motor, is connected in series with a capacitor so that the capacitor, together with the input voltage, causes the stator core to periodically switch from a nonsaturated to a saturated condition and vice-versa so that the flux density is maintained at a uniform high level. A second set of stator coils may be provided which serves to provide increased starting torque and improve the overall operating characteristics of the motor.

Abstract: A polyphase motor is disclosed in which each coil of the stator winding of, for example, a squirrel cage induction motor is connected in series with a capacitor so that the capacitor, together with the input voltage, causes the stator core to periodically switch from a nonsaturated to a saturated condition and vice-versa so that the flux density is maintained at a uniformly high level. A control winding is provided to generate magnetic flux in the stator to vary the volt-second capacity of the magnetic material of the stator in accordance with varying line, load or other selected conditions. The current in the control winding can be externally controlled or may be provided by a feedback winding wound on the stator.

Abstract: A motor is disclosed in which the main stator winding of, for example, a squirrel case inducting motor, is connected in series with a capacitor so that the capacitor, together with the input voltage, causes the stator core to periodically switch from a nonsaturated to a saturated condition and vice-versa so that the flux density is maintained at a uniform high level. A second stator winding is provided in parallel with the first stator winding and capacitor which second winding serves as the phase winding and causes the motor to operate as a balanced split phase motor having a high efficiency over a broad range of operating points.

Abstract: A motor is disclosed in which a control winding is provided to generate magnetic flux in the stator to vary the volt-second capacity of the magnetic material of the stator in accordance with varying line, load or other selected conditions. The current in the control winding can be externally controlled or may be provided by a feedback winding wound on the stator.

Abstract: A motor is disclosed in which the stator winding of, for example, a squirrel cage induction motor, is connected in series with a capacitor so that the capacitor, together with the input voltage, causes the stator core to periodically switch from a nonsaturated to a saturated condition and vice-versa so that the flux density is maintained at a uniform high level. A second stator winding may be provided in parallel with the first stator winding and capacitor which second winding serves to provide increased starting torque and improve the overall operating characteristics of the motor. Also disclosed is an embodiment in which an inverter is employed to permit the motor to be operated from a DC source.