SOL-ARK 15K-2P HYBRID INVERTER Inverter High Frequency Buzz
System Nominal
The high-pitched buzz is a result of magnetostriction in the power inductors and transformer windings. This occurs when the magnetic flux from high-frequency Pulse Width Modulation (PWM) causes microscopic physical deformations in the core materials. This acoustic resonance is a standard engineering byproduct of high-capacity DC-to-AC conversion and is most audible under heavy electrical loads.
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