Multi-pulse AC–DC converter fed SVM controlled NPC inverter based VCIMD

• Published in: IET power electronics 2018-11, Vol.11 (14), p.2204-2214
• Main Authors: Kant, Piyush, Singh, Bhim
• Format: Article
• Language: English
• Subjects: 12‐pulse AC–DC converter; AC‐DC power convertors; controlled neutral point; harmonic distortion; high‐pass filter; high‐pass filters; IEEE‐519 standard; induction motor drive; induction motor drives; machine vector control; medium power applications; medium power rating applications; modified SVM strategy; multipulse AC–DC converter fed space vector modulation; negative small vectors; neutral point voltage balancing; NPC inverter based vector control; positive vectors; power harmonic filters; power quality; power supply quality; PWM invertors; Research Article; SVM controlled NPC inverter; three‐level NPC inverter
• ISSN: 1755-4535; 1755-4543; 1755-4543
• DOI: 10.1049/iet-pel.2018.5084

A multi-pulse AC–DC converter fed space vector modulation (SVM) controlled neutral point clamped (NPC) inverter based vector control induction motor drive (VCIMD) is proposed here for medium power rating applications. To improve the power quality at supply side, a 12-pulse AC–DC converter is used and to meet the IEEE-519 standard, a high-pass filter is also used along with it. A three-level NPC inverter is utilised on the motor side to enhance the required performances of an induction motor drive (IMD). A modified SVM strategy is proposed to balance the capacitor voltages of the NPC inverter and to switch this inverter at very low switching frequency. The neutral point voltage balancing is achieved by the time adjustment between positive and negative small vectors. The model of proposed IMD is developed using the Simulink/MATLAB platform, and simulated response is validated with test results on a developed prototype in the laboratory to demonstrate its usefulness for medium power applications.