What is Harmonic Distortion?
Harmonic distortion occurs when unwanted frequencies are introduced into an electrical system, typically caused by non-linear loads such as variable frequency drives (VFDs), UPS systems, LED lighting, and certain industrial machinery. These harmonics distort the voltage and current waveforms, leading to reduced power quality.
Why It Matters
Left unchecked, harmonics can:
- Overheat transformers and cables
- Reduce the efficiency of motors and drives
- Cause nuisance tripping in circuit breakers
- Shorten equipment lifespan
- Increase operational costs
Common Causes of Harmonics
- Variable Frequency Drives (VFDs) in manufacturing
- Uninterruptible Power Supplies (UPS) in data centers
- Energy-efficient lighting systems
- Inverter-based renewable energy systems
How to Measure Harmonics
Using a power quality analyzer, engineers can measure Total Harmonic Distortion (THD) in a system. A THD value above recommended limits (as per IEEE 519 standards) indicates the need for mitigation.
Wave Tronics Solutions
At Wave Tronics, we provide:
- Active Harmonic Filters to dynamically remove harmful harmonics
- Passive Filters for targeted harmonic frequencies
- Custom-designed filtering systems for specific industrial applications
Conclusion
Harmonic distortion is a silent efficiency killer. By addressing it early, you can protect your equipment, reduce downtime, and improve overall energy efficiency.