Efficient Torque Control for WRIM with Optimized PWM Logic
Reduction of Torque Ripple in Double Inverter Fed Wound Rotor Induction Machine
Tags: IIT Delhi, India, Consumer Goods & Services, Energy & Environment
A system has been developed to reduce torque ripple in a double inverter-fed wound rotor induction machine (WRIM) by modifying the pulse width modulation (PWM) sequence. The control system generates optimized switching logic for the stator and rotor side inverters, effectively minimizing torque fluctuations. This method works across different stator-to-rotor turn ratios and operates without frequency constraints. The technology enhances machine performance, improving efficiency in applications like pumps, compressors, small fans, and mixers in residential, commercial, and industrial settings. A functional prototype has been developed and tested in a laboratory environment.
IP Type or Form Factor: Patent Granted; Device; Software & Algorithm
TRL: 4 - minimum viable product built in lab
Industry or Tech Area: Home Appliances & Consumer Electronics; Energy Efficiency
