VFD Harmonic Mitigation in Cleanroom and Data Center HVAC: IEEE 519 Compliance and Field Diagnostics
Variable frequency drives are the dominant actuator in modern precision HVAC systems. They deliver the speed-modulated airflow that sustains differential pressure cascades in cleanrooms and the variable cooling capacity that tracks fluctuating server load in data centers. Yet the same six-pulse rectifier front end that makes a VFD energy-efficient is also a non-linear load that … Read more