Induction Motor Drive with H-Bridge Cascaded Converter

This work presents an innovative control approach for Power Factor Correction (PFC) in a three-phase PWM AC chopper. It employs the HBCC technique to drive a three-phase squirrel cage Induction Motor (IM) and supports both soft starting and speed control modes. What sets this strategy apart is its remarkable simplicity, reliability, high efficiency, and cost-effectiveness, achieved by minimizing the number of power semiconductor switches in the power circuitry. The three-phase PWM AC chopper is built using only four IGBTs, and a new closed-loop control methodology is devised, utilizing just two gate pulses to manage these four IGBTs.

Autorentext

Raja Reddy Duvvuru, Associate Professor, Department of EEE, Malla Reddy Engineering College, Hyderabad.Dr.V.Madhusudhan Reddy, Professeur, Département EEE, Malla Reddy Engineering College, Hyderabad.