Why Filter Third Harmonics on the Neutral Line? Enhancing Power Quality and Efficiency Introduction Third harmonics, a type of harmonic distortion commonly generated by non-linear loads, frequently flow on the neutral line and create power quality challenges in electrical systems. Left unmanaged, these harmonics can lead to overheating, decreased system efficiency, and equipment dama...
Why is CT Selection the Core of AHF System Performance? The current transformer (CT), as the "sensing organ" of the active harmonic filter (AHF), directly affects the accuracy of harmonic detection and the dynamic response speed. If the CT is not properly selected, the following problems may occur: Failure of Harmonic Compensation: Low-frequency or high-frequency harmonics are missed in det...
1. Current Transformer (CT) A Current Transformer is an instrument transformer used to measure alternating current (AC) by stepping down high currents to a lower, measurable value. Key Functions: Current Measurement: Steps down high primary current (e.g., 1000A) to a standardized secondary current (e.g., 5A or 1A) for meters and relays. Isolation: Provides galvanic isolation be...
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