Shubhankar Kapoor

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About

Shubhankar Kapoor is a leading figure in power systems engineering, whose work has fundamentally shaped how industrial plants manage power quality in the age of variable-frequency drives. His research centers on the intricate interactions between pulse-width modulation (PWM) sources and plant power system harmonics, with a particular focus on the unintended consequences of modern power electronics. Kapoor’s seminal 2002 paper, “Effect of two-level PWM sources on plant power system harmonics,” which has garnered 30 citations, delivered a critical warning to the industry: even low-distortion two-level PWM sources can dangerously compromise voltage-sensitive electronic equipment when sharing a common electrical bus. This finding challenged prevailing assumptions and forced a re-evaluation of plant electrical design practices. Kapoor’s major contribution lies in demonstrating that harmonic mitigation is not solely about reducing distortion at the source, but about understanding system-level interactions. His work remains a cornerstone for engineers designing robust power systems, ensuring that the efficiency gains from PWM drives do not come at the cost of operational reliability.