Control system for two-phase reversible motor

H - Electricity – 02 – P

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

318/52, 318/60

H02P 23/00 (2006.01) H02P 1/44 (2006.01)

Patent

CA 1117587

CONTROL SYSTEM FOR TWO-PHASE REVERSIBLE MOTOR Abstract: By closing a series-connected first solid state switch, such as a triac, AC line voltage is applied directly to the first of two field windings of a two-phase reversible AC induction motor to drive the motor in one of its two directions. The shifted phase voltage, appearing at the other or second field winding, has a magnitude of about twice that of the line voltage and is employed to supply gate current to the first solid state switch over a cross-coupling circuit. Conversely, when motor rotation in the opposite direction is desired a second solid state switch or triac is rendered conductive to apply the AC line voltage directly to the second field winding, the gate current for the second solid state switch being derived from the high magnitude shifted voltage appearing at the first winding. Since the gating voltage is phase displaced (by approximately 90°) with respect to the AC voltage applied to the main terminals of the gated triac, the gating voltage will have a relatively high instantaneous amplitude each time the applied AC voltage crosses its a-c axis, namely, goes through zero amplitude. As a result, the triac will be immediately regated at the start of each half cycle. In effect, the triac will be DC gated.

316214

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Control system for two-phase reversible motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control system for two-phase reversible motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system for two-phase reversible motor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-905148

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.