초록 ▼

A multi-channel motor winding configuration providing low harmonic distortion and a PWM inverting controller for this type of winding configuration are disclosed. The motor winding configuration includes a plurality of individually insulated conductors wound in a group through the stator slots of a

A multi-channel motor winding configuration providing low harmonic distortion and a PWM inverting controller for this type of winding configuration are disclosed. The motor winding configuration includes a plurality of individually insulated conductors wound in a group through the stator slots of a synchronous or induction type alternating current (AC) motor. Depending on the winding configuration, the group of conductors may constitute a portion of or the entire current carried by one phase of a single or polyphase motor. The PWM controller for this type of winding configuration connects each conductor in the group to its own dedicated set of power switching devices in an H-bridge configuration. The H-bridge configuration is powered by a direct current (DC) or rectified AC source. The power switching devices are switched on and off in sequence with the duration each switching device remains on being proportional to the difference between the total current in the group of conductors and a predefined target current waveform that is desired for each phase of the motor or portion of a phase.

대표청구항 ▼

[ I claim:] [1.]1. A multi-channel electromagnetic winding arrangement comprisingan electromagnetic winding comprising at least one phase, each of the at least one phase comprising at least two channels including means for generating different current waveforms for each channel, each channel compris

[ I claim:] [1.]1. A multi-channel electromagnetic winding arrangement comprisingan electromagnetic winding comprising at least one phase, each of the at least one phase comprising at least two channels including means for generating different current waveforms for each channel, each channel comprising at least one conductor wherein each conductor in each channel is electrically isolated from conductors in other channels,at least one switching means controlling each channel and dedicated thereto, andcontrol means for controlling the switching means so as to produce a composite current waveform from the different current waveforms generated by each channel.