Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1987-06-12
1988-10-11
Shoop, Jr., William M.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318769, 363150, 363148, H20P 126
Patent
active
047774215
ABSTRACT:
A single-phase to three-phase converter for starting and running a single, three-phase, load carrying induction motor having first, second and third Y-wound stator windings from a single phase power supply comprising a connector for connecting the input conductors to the converter to a source of single-phase alternating current, a connector for connecting the output conductors from the converter to the three-phase induction motor and adapted to connect one single-phase input conductor to the first stator winding and the other single-phase input conductor to the second stator winding, a bank of run capacitors connected between the first powered stator winding and the third unpowered stator winding to develop a voltage in the third winding at a phase angle different from the phase angles in the first and second powered windings, a potential-type relay comprising a set of normally closed contacts and a winding to open them, the windings connected between the second and third stator winding, a slave relay comprising a set of normally open contacts and a winding to close them, the slave relay winding connected between the first stator winding and the potential relay winding through a set of normally closed potential relay contacts and a bank of start capacitors connected between the third unpowered stator winding and one of the slave relay open contacts adapted to produce immediate capacitor-phase shifted starting power to the third stator winding.
REFERENCES:
patent: 2593987 (1952-04-01), Courtney et al.
patent: 3201673 (1965-08-01), Williford et al.
patent: 3202896 (1965-08-01), Lewus
patent: 3673480 (1972-06-01), Johnstone
patent: 4656575 (1987-04-01), West
Murphey John J.
Shoop Jr. William M.
Young Brian
LandOfFree
Phase converter for 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 Phase converter for motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase converter for motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1960116