VFD Harmonics Calculator
VFD Pulse Count
kVA
V
%
MVA
Isc/IL Ratio: 500.0
Fundamental Current: 120.3 A
THDi28.6%
IEEE 519 ComplianceFAIL
K-Factor14.4
Neutral Multiplier1.00x
Harmonic Spectrum vs IEEE 519 Limits
Non-Compliant Harmonics
H519.00% (limit: 12.0%)
H713.57% (limit: 12.0%)
H137.31% (limit: 5.5%)
H175.59% (limit: 5.5%)
H253.80% (limit: 2.0%)
H293.28% (limit: 2.0%)
H313.06% (limit: 2.0%)
H352.71% (limit: 2.0%)
H372.57% (limit: 1.0%)
H412.32% (limit: 1.0%)
H432.21% (limit: 1.0%)
H472.02% (limit: 1.0%)
H491.94% (limit: 1.0%)
Filter Recommendation
Install passive LC harmonic filter tuned to 5th harmonic (250 Hz at 50 Hz / 300 Hz at 60 Hz). Consider a multi-stage filter targeting harmonics 5, 7, 11 for comprehensive mitigation.
TDD Limit (IEEE 519)15.0%