Case Study

Mitigate VFD Harmonic

VFD Harmonic

Abstract - VFD Harmonic forced a power plant to shutdown due to power quality failure. Starting with drive tripping it blasted switch gear, bus bar & electrical panel. This IPP with a 25mw, 11kV, 50Hz power plant and 5000TCD sugar milling unit had completed its first anniversary without harmonic problem. But during 2nd year's operation, it started-off with a massive blast of a 6300A Air Circuit Breaker (ACB). It was at the incomer of an electrical panel. The 415V PCC panel was supplying to sugar plant's process load.

Increase Productivity through Harmonic Solution

Increase Productivity

Abstract- Harmonic solution is an engineer's approach to total productive maintenance (TPM) to Increase Productivity. No stoppage. No breakdown. No quality rejection. A 3500 TCD sugar milling unit was operating at 3000 TCD due to frequent drive stalling problem with dc mill motor. To increase productivity and sugar recovery, it installed a 2000A passive tuned harmonic filter in 2010, at a 3MW 415V Turbine Generator (TG).

Solve VFD Drive Failure

VFD Drive Failure

Abstract:- An ACSR conductor manufacturing plant was facing high incidence of DC motor and AC VFD Drive Failure due to bad power quality and high harmonic distortion. The company is a world leader in non-ferrous metal industry. It manufactures ACSR conductors for HV and EHV power transmission and distribution lines. It had been facing a high incidence of operational problem across its plants A and B. It affected all electrical and electronic equipment with its conductor making process.