Harmonic Filters & Sizing
Harmonic Filters & Sizing Analysis
Overview
Harmonic filters are extensively used to mitigate harmonic problems.
A properly designed harmonic filter can prevent the harmonic current from injecting into the system, or it can provide a low impedance path at the tuned frequency to remove a parallel resonance. The Harmonic Filter editor provides all the practical and popular filter structures for you to choose from.
Harmonic Filters & Sizing Software Key Features
- Harmonic Filter design and sizing of multiple filter types based on IEEE Std. 1531-2020
- Harmonic filter sizing based on power factor correction, minimum cost, or minimum operation objective
- Automatic harmonic filter overloading checking & alert
- Preview filter behavior by plotting existing and newly sized filter impedances vs. the harmonic order
Built-in Harmonic Filter Types
- By-Pass
By-pass frequency characteristic
High-Pass Damped
High-pass with damped frequency characteristicHigh-Pass Undamped
High-pass with undamped frequency characteristicSingle-Tuned (Notch)
Single-tuned frequency point3rd Order Damped
Special high-pass damped filter where the inductance is replaced with a series LC Circuit to provide zero losses at the fundamental frequency and therefore avoiding parallel resonance- 3rd Order C-Type
Special high-pass undamped filter where the inductance is replaced with a series LC Circuit to provide zero losses at the fundamental frequency and therefore avoiding parallel resonance
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The integration of electric vehicles (EVs), PV systems, battery energy storage systems (BESS), and more has presented us with exciting opportunities and challenges. One such challenge is the need for unbalanced network harmonic analysis, especially when dealing with single-phase charging vehicles and inverter controls.
Learn how to size passive harmonic filters as part of harmonic analysis. The following filter types include expanded sizing capabilities: single-tuned (notch), high-pass damped, 3rd order damped, and 3rd order C-type.
Impact of Harmonics on Performance of Over-Current Relays
This Paper investigates the impact of power system harmonics on the performance of over-current relays.
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