Cummins Diesel Generator Permanent Magnet Installation

During operation, the alternator of a Cummins diesel generator generates a magnetic field, which spreads around the unit. This may cause interference if there are other frequency converters or magnetic-field-carrying electrical devices nearby, disrupting the generator or surrounding equipment. Many customers find this issue perplexing.

When installing a Cummins diesel generator, manufacturers first check for other electrical devices in the machine room. If present, installing a permanent magnet on the generator is recommended to prevent mutual interference and ensure a stable operating environment. If no such devices exist, permanent magnet installation depends on customer needs.

Key Advantages of Adding Permanent Magnets to Cummins Diesel Generators

1.Simplified Structure & Enhanced Reliability: Eliminates excitation windings, brushes, and collector rings, reducing risks of burnout, wire breakage, and wear for more reliable performance.

2.Superior Low-Speed Performance: Delivers higher output power and stable electricity generation at idle speeds.

3.Energy Efficiency: Conventional excited generators average ~50% efficiency within typical speed ranges, while permanent magnet generators achieve 75%–80% average efficiency, saving energy.

4.Battery Protection: Uses switched rectification and voltage regulation with low-current pulse charging, avoiding overcurrent damage and extending battery lifespan.

5.Reduced Interference: No brushes, collector rings, or sparking during operation minimizes radio interference and improves overall unit efficiency.

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