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Class 318/529 - Selectively energized


Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which means are provided for energizing
No. of patents: 9
Last issue date: 05/14/2002


NumberTitleIssue Date
6388356Methods and apparatus for controlling electromagnetic flux in dynamoelectric machines
A method of adjusting speed and torque of a dynamoelectric machine is disclosed. The machine includes a main winding, and a divided winding each configured to generate a plurality of poles. The method includes the steps of energizing the main winding and ...
05/14/2002
5905322Coil structure for adjusting the speed of ceiling fan motors
A spread adjusting motor for a ceiling fan with coils that distribute an even magnetic field for the fan rotor to eliminate the interval noises from the current. The main feature of the coils is that they use a skip or pass through winding process for the...
05/18/1999
5412298Motor control circuit having series or compound excitation during starting and shunt excitation during normal running
A motor control circuit provides series or compound excitation during starting and shunt excitation during normal running. A switch responsive to the motor speed, the armature current, the armature EMF, or the like, includes terminals connected to the ser...
05/02/1995
5410231Auxiliary power supply circuit for a series motor
A compound series motor includes a series field winding, armature, and auxiliary power supply connected in parallel with the series winding. The drop in armature current through the series field winding may be reduced by connecting an auxiliary field wind...
04/25/1995
5408165Device comprising a multiphase load, a static converter and inductance coils
The device comprises inductance coils (6) which are each allocated to one phase and which are wound around a common magnetic core in the same direction and with the same number of windings. One each of the inductance coils (6) is connected to one each of ...
04/18/1995
4511831Speed control of a D.C. electric motor
A novel stator assembly, D.C. electric motor, and method of controlling the speed of the motor is described. The stator assembly includes a pair of field poles, each having a field coil wound around a shank portion, a plurality of separately excitable fie...
04/16/1985
4370603Shunt field control apparatus and method
A field shunt operation for a chopper controlled series DC propulsion motor in the power mode is provided in response to a desired torque request, when a predicted value of the resulting shunt field motor current is determined to be no greater than the kn...
01/25/1983
4346335Speed control of a D.C. electric motor
A novel stator assembly, D.C. electric motor, and method of controlling the speed of the motor is described. The stator assembly includes a pair of field poles, each having a field coil wound around a shank portion, and a plurality of separately excitable...
08/24/1982
4019106Motor speed control
A switch for speed control of an electric motor driven vehicle employs a combination of resistance switching, field weakening and voltage switching. A mechanical switch assembly has a speed switch and a voltage switch that are interconnected so that the v...
04/19/1977
 
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