Armature Reaction :: DC Generator Part 4

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Armature Reaction

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Armature Reaction

• Armature Flux
• Geometric Neutral Axis (GNA)
• Magnetic Neutral Axis (MNA)
• Brush Shifting

1. Cross Magnetization
2. Demagnetization

Methods of reducing armature reaction

1. Pole stacking
2. Pole chamfering
3. Pole cross slotting
4. Compensating winding

Demagnetizing Ampere Turns/ Pole
Cross Magnetizing Ampere Turns