Special Electrical Machines
Poly-phase AC Machines:
COMPUTATIONS AND CIRCLE DIAGRAMS
SINGLE-PHASE MOTORS
ALTERNATORS,SYNCHRONOUS MOTOR
SPECIAL MACHINES
- Poly-phase AC Machines
- Classification of A.C. Motors
- Construction of A.C Motor
- Phase-wound Rotor
- Production of Rotating Field
- Three-phase Supply
- Relation Between Torque and Rotor Power Factor
- Starting Torque of induction motor
- Torque, Rotor E.M.F. and Reactance Under Running Conditions
- Condition for Maximum Torque Under Running Conditions
- Relation Between Torque and Slip
- Full-load Torque, Starting torque and Maximum Torque
- Torque/Speed Curve
- Current/Speed Curve of an Induction Motor
- Plugging of an Induction Motor
- Complete Torque/Speed Curve of a Three-Phase Machine
- Measurement of Slip
- Power Stages in an Induction Motor
- Torque, Mechanical Power and Rotor Output
- Induction Motor Torque Equation
- Analogy with a Mechanical Clutch and D.C. Motor
- Sector Induction Motor
- Magnetic Levitation
- Induction Motor as a Generalized Transformer
- Equivalent Circuit of the Rotor and Induction Motor
- Power Balance Equations
- Circle Diagram for a Series Circuit
- Circle Diagram for the Approximate Equivalent Circuit
- Determination of G0 and B0
- Blocked Rotor Test
- Construction of the Circle Diagram
- Starting of Induction Motors
- Starting of Slip-ring Motors
- Starter Steps
- Crawling and Cogging or Magnetic Locking
- Double Squirrel Cage Motor
- Speed Control of Induction Motors
- Three-phase A.C. Commutator Motors
- Three-phase A.C. Commutator Motors
- Standard Types of Squirrel-cage Motors
- Types of Single-Phase Motors
- Single-phase Induction Motor
- Double-field Revolving Theory
- Making Single-phase Induction Motor Self-starting
- Equivalent Circuit of a Single-phase Induction Motor–Without Core Loss
- Types of Capacitor–start Motors
- Capacitor Start-and-Run Motor
- Shaded-pole Single-phase Motor
- Repulsion Type Motors
- Repulsion Principle
- Compensated Repulsion Motor
- A.C. Series Motors
- Universal Motor
- Speed Control of Universal Motors
- Unexcited Single-phase Synchronous Motors
- Basic Principle and Stationary Armature of Alternator
- Details of Construction
- Damper Windings, Speed and Frequency
- Armature Windings, Concentric or Chain Windings and Two-Layer Winding
- Wye and Delta Connections,Short-pitch Winding : Pitch factor/chording factor
- Distribution or Breadth Factor or Winding Factor or Spread Factor
- Equation of Induced E.M.F.
- Factors Affecting Alternator Size
- Alternator on Load
- Synchronous Reactance and Vector Diagrams of a Loaded Alternator
- Voltage Regulation and Determination of Voltage Regulation
- Synchronous Impedance Method
- Rothert's M.M.F. or Ampere-turn Method
- Zero Power Factor Method or Potier Method
- Operation of a Salient Pole Synchronous Machine
- Parallel Operation of Alternators and Synchronizing of Alternators
- Synchronizing Current
- Alternative Expression for Synchronizing Power
- Parallel Operation of Two Alternators
- Effect of Unequal Voltages
- Time-period of Oscillation
- Maximum Power Output
- Stepper Motors
- Types of Stepper Motors
- Variable Reluctance Stepper Motors
- Multi-stack VR Stepper Motor
- Permanent-Magnet Stepping Motor
- Hybrid Stepper Motor
- Permanent-Magnet DC Motor
- Low-inertia DC Motors
- Permanent-Magnet Synchronous Motors
- Applications of Synchros
- Control Differential Transmitter and Receiver
- Switched Reluctance Motor
- The Resolver
- Servomotors