Single-phase motor starters

Details Single-phase motor starters Single-phase motor starters

1996-11-07

2000-04-11

Martin, David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318781, 318794, H02P 142

Patent

active

060491884

ABSTRACT:
For a three-winding motor, a starting capacitor bank provides balanced currents in the windings, a high starting torque, and unity power-factor current in the single-phase supply line. A run-capacitor bank provides full-load balanced currents and a leading power-factor in the single-phase supply line. The method is applicable to a star or wye winding connection, to a delta winding connection, and to a Semihex.TM. winding connection.

REFERENCES:
patent: 4066937 (1978-01-01), Pfarrer et al.
patent: 4378520 (1983-03-01), Ford
patent: 4642545 (1987-02-01), Lewus
patent: 4675565 (1987-06-01), Lewus
patent: 4792740 (1988-12-01), Smith
patent: 4862053 (1989-08-01), Jordan et al.
patent: 5017853 (1991-05-01), Chmiel
patent: 5252904 (1993-10-01), Nanos
patent: 5300870 (1994-04-01), Smith
patent: 5545965 (1996-08-01), Smith

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