I. Analysis of Harmonic Sources and Characteristics Harmonics in AC systems are primarily generated by their core component—Variable Frequency Drives (VFDs/VSDs)—used to drive compressors, chilled water pumps, cooling tower fans, etc. Main Harmonic Sources: Central AC Units: Large centrifugal or screw compressor drive VFDs are the highest power and primary harmonic sources. Pumps ...
The market's preference for the model of "sampling on the high-voltage side and mitigation on the low-voltage side" is not accidental. It is the optimal solution determined by a combination of factors including technical feasibility, economic efficiency, safety, and mitigation effectiveness. The logic behind this can be understood with a simple analogy: A doctor performs a "blood te...