REPULSION-TYPE MOTORS There are three general types of repulsion motors: the repulsion motor; the repulsion- start, induction-run motor; and the repulsion-induction motor. These three types of motors differ in their construction, operating characteristics, and industrial applications. REPULSION MOTOR Construction A repulsion motor has the following basic components: 1. A laminated stator core; one winding of […]
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Alternating current fundamentals
Single-Phase Motors : Repulsion-type motors, Repulsion motor , Repulsion-start, induction-run motor , Repulsion–induction motor and Alternating current series motor .
REPULSION-TYPE MOTORS There are three general types of repulsion motors: the repulsion motor; the repulsion- start, induction-run motor; and the repulsion-induction motor. These three types of motors differ in their construction, operating characteristics, and industrial applications. REPULSION MOTOR Construction A repulsion motor has the following basic components: 1. A laminated stator core; one winding of […]
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Single-Phase Motors : Capacitor-start, induction-run motor , Capacitor-start, capacitor-run motor and Multispeed motor .
CAPACITOR-START, INDUCTION-RUN MOTOR Construction Physically, the capacitor-start, induction-run motor is similar to the resistance-start, induction-run motor. However, the capacitor-start motor has a capacitor connected in series with the starting windings. Generally, the capacitor is mounted in any convenient external location on the motor frame. In some cases, the capacitor is mounted inside the motor housing. […]
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Single-Phase Motors : Capacitor-start, induction-run motor , Capacitor-start, capacitor-run motor and Multispeed motor .
CAPACITOR-START, INDUCTION-RUN MOTOR Construction Physically, the capacitor-start, induction-run motor is similar to the resistance-start, induction-run motor. However, the capacitor-start motor has a capacitor connected in series with the starting windings. Generally, the capacitor is mounted in any convenient external location on the motor frame. In some cases, the capacitor is mounted inside the motor housing. […]
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Single-Phase Motors : Introduction , Single-phase induction motors and Resistance-start, induction-run motor.
Single-Phase Motors INTRODUCTION There are a number of types of single-phase motors. The types covered in this unit are the single-phase induction motor, the repulsion motor, the repulsion-induction motor, the series motor, and the shaded-pole motor. Three-phase motors generally perform better than single-phase motors. However, in many instances, only single-phase service is avail- able. Most […]
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Single-Phase Motors : Introduction , Single-phase induction motors and Resistance-start, induction-run motor.
Single-Phase Motors INTRODUCTION There are a number of types of single-phase motors. The types covered in this unit are the single-phase induction motor, the repulsion motor, the repulsion-induction motor, the series motor, and the shaded-pole motor. Three-phase motors generally perform better than single-phase motors. However, in many instances, only single-phase service is avail- able. Most […]
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The Synchronous Motor: Selsyn differential system.
SELSYN DIFFERENTIAL SYSTEM A selsyn differential system consists of a transmitter, a differential, and a receiver, Figure 17–17. The differential selsyn resembles a miniature wound-rotor induction motor. There are three rotor windings, usually connected in wye. The windings are brought out through three slip rings to external terminals R1, R2, and R3. The stator windings […]
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The Synchronous Motor: Selsyn differential system.
SELSYN DIFFERENTIAL SYSTEM A selsyn differential system consists of a transmitter, a differential, and a receiver, Figure 17–17. The differential selsyn resembles a miniature wound-rotor induction motor. There are three rotor windings, usually connected in wye. The windings are brought out through three slip rings to external terminals R1, R2, and R3. The stator windings […]
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The Synchronous Motor: Starting large synchronous motors , Synchronous motor ratings, Small single-phase synchronous motors , Selsyn motors and Operation .
STARTING LARGE SYNCHRONOUS MOTORS The earlier part of this unit described how a synchronous motor is started. In general, the starting current for synchronous motors is less than that for squirrel-cage induction motors having the same horsepower and speed ratings. In most cases, it is preferred to start a synchronous motor at full voltage. Motors […]
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The Synchronous Motor: Starting large synchronous motors , Synchronous motor ratings, Small single-phase synchronous motors , Selsyn motors and Operation .
STARTING LARGE SYNCHRONOUS MOTORS The earlier part of this unit described how a synchronous motor is started. In general, the starting current for synchronous motors is less than that for squirrel-cage induction motors having the same horsepower and speed ratings. In most cases, it is preferred to start a synchronous motor at full voltage. Motors […]
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