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Transformer Core Structure and Function

Yapay zekadan makale özeti

Core Purpose and Design: Core provides mechanical support and magnetic flux path
Core must minimize eddy current and hysteresis losses
Core acts as coupling between primary and secondary windings
Core Material: Made of cold-rolled grain-oriented silicon steel (CRGOS)
CRGOS has high permeability and aging effects
Laminations range from 0.18mm to 0.35mm thickness
Sheets are coated with Carlite for insulation
Core Construction Types: Core type: windings wound around limbs, single or three phases
Shell type: windings encircle middle limbs, more economical
Wound cores have fewer joints, used for 25-2500 kVA transformers
Stacked cores have gaps, circular cross-sections preferred above 10MVA
Corner Joining: Interleaved joints are simplest but least efficient
Mitered joints cut at 45° for smooth flux flow
Core diameter-kVA relationship: D = k(S)1/4