Description
The iron core of a diesel generator is the core electromagnetic component, composed of laminated high-permeability silicon steel sheets, undertaking the critical roles of magnetic field conduction and energy conversion. Its design directly influences power generation efficiency, temperature rise, and noise level. Modern iron cores adopt laser cutting or etching processes to ensure lamination precision, reduce eddy current loss and hysteresis loss, and enhance overall energy efficiency. The iron core must feature high magnetic permeability, low iron loss, and anti-saturation properties to adapt to the high-torque working conditions of diesel engines.
Working Principle
· Electromagnetic Induction: The diesel engine drives the rotor to rotate, generating an alternating magnetic field within the iron core.
· Magnetic Circuit Closure: The iron core forms a closed magnetic circuit, concentrating magnetic field energy and cutting the stator windings.
· Electric Energy Generation: Magnetic field changes induce current in the windings, converting mechanical energy into electrical energy.
The low-loss design of the iron core (<1.5W/kg) ensures an energy conversion efficiency of over 95%.
Main Applications
· Industrial Power Supply: Backup power for factories and mines to ensure continuous production.
· Emergency Power: Uninterruptible power systems (UPS) for hospitals and data centers.
· Mobile Equipment: Power cores for ships and engineering vehicles.
· New Energy Complementation: Combined with solar/wind energy to form hybrid power supply systems.
Specification Parameters Table
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Parameter
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Standard Value
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Remarks
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Material
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Cold-rolled silicon steel sheet (Type 50WW350)
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0.5mm thickness, coated with insulation
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Outer Diameter of Iron Core
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200–1200mm
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Suitable for 5kW–2000kW generators
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Lamination Factor
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≥95%
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Reduces air gaps and enhances magnetic permeability
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Iron Loss (50Hz)
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≤2.0W/kg
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Specified by GB/T 2521
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Operating Temperature
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-40°C to +180°C
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H-class insulating material
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Weight
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15kg–800kg
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Positively correlated with power
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FAQ
Q1: Why must silicon steel sheets be used for the iron core?
A1: Silicon steel sheets contain 3%-5% silicon, which reduces resistivity and cuts eddy current loss by 70%, making them more efficient than ordinary steel.
Q2: What is the service life of the iron core? How to maintain it?
A2: The service life under normal working conditions is ≥20 years. Regular dust removal and inspection of the insulation coating are required to avoid corrosion in humid environments.
Q3: How to match the iron core size with the generator power?
A3: For every 100kW increase in power, the cross-sectional area of the iron core needs to be expanded by approximately 15%, referring to the magnetic flux density formula (B=μ·H).
Q4: Can aluminum replace the iron core?
A4: No! The magnetic permeability of aluminum is only 1/1000 of that of iron, which cannot effectively conduct the magnetic field.
Q5: What causes loud noise in the iron core?
A5: Loose lamination or damaged insulation leads to vibration, requiring re-tightening or replacement.
Product Tags:
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