HF-Active-Vs-Passive-Harmonic-Filter

2. Power flow Harmonic flow Harmonic Flow in Power System • How Harmonics Flow? • Being a Current Source, it flows in the opposite direction from downstream load to all branches in the upstream power system. • By Ohm’s Law, it flows across all paths in the power system based on each path’s relative impedance. Along its flow path, two-events happen. • Firstly, the downstream equipment and cables, designed for 50.60Hz absorbs these high-frequency harmonics causing excessive stress to themselves. It causes equipment failure, high running temp, tripping and malfunction. The super tuned filter by creating a short-circuit path diverts the harmonics and troubleshoots the problem. • Secondly, the grid being relatively a lower impedance path absorbs the remaining harmonics leftover by the downstream plant and machinery. The Active Harmonic Filter prevents these harmonics from going over to the grid. Grid Supply PCC 415V Bus MCC Grouped Non-Linear Load (NLL) Linear & NLL

3. Power flow Harmonics Harmonic Flow Vs Active Filter • What Active Harmonic Filter Does • AHF is a Voltage Source Load that generates negative harmonics to cancel harmonics coming from the load. It allows only a small harmonics, within limit, to the grid. • Being a Load, it consumes Active Power. OEM catalogues claim min 3% power losses which are measured at the favorable Lab condition only. • AHF needs a stable Voltage Source and thus susceptible to voltage fluctuation. Many OEM void warranty on higher voltage variations. Installing AHF at downstream MCC does not remove further downstream harmonics from Load. It provides harmonics relieve only to the cable in-between MCC and PCC. Grid Supply PCC 415V Bus MCC Active Filter Grouped Non-Linear Load (NLL) Linear & NLL

4. Power flow Harmonic flow Harmonic Flow Vs Super Tuned • Why Passive Harmonic Filter is Super Tuned? • It alters the dynamics of the harmonic flow by creating a Short-Circuit path for the flow of harmonic frequencies like 250Hz for 5th harmonics etc. • The load harmonics now, instead of getting absorbed in the downstream loads, are diverted as soon as it’s produced through this short-circuit path into the filter, thus solving equipment failures, tripping, and malfunctions. It allows only a small harmonics within a limit over to the grid, meeting the IEEE 519 harmonic standard, for both voltage and current harmonics. • By relieving the downstream equipment from the burden of harmonic absorptions, it eliminates that need for costly derating saving CAPEX and equipment footprint cost. • It saves OPEX cost in the manifold. Firstly it eliminates harmonics naturally and allowing full load plant operation sustainably. Secondly, it troubleshoots failures and thirdly it enhances energy efficiency. • The harmonious operation from the optimum power quality results in lesser end-product quality rejections which we have tracked up to 50% savings on Six-Sigma Scale. Grid Supply PCC 415V Bus Super Tuned MCC Xl – Xc =0 Short-Circuit Grouped Non-Linear Load (NLL) Linear & NLL

5. THD –Voltage & Current Filter -ON |------------------Filter –OFF ----------------------| Filter -ON

6. Harmonics–Voltage & Current Filter -OFF Filter -ON

7. Waveform –Voltage & Current Filter -OFF Filter -ON

8. Acknowledgement Thank You Merci Beaucoup