A Fault-Tolerant Dual Three-Level Inverter Configuration for Multipole Induction Motor Drive With Reduced Torque Ripple

Nallamekala, K K and K, Siva Kumar (2016) A Fault-Tolerant Dual Three-Level Inverter Configuration for Multipole Induction Motor Drive With Reduced Torque Ripple. IEEE Transactions on Industrial Electronics, 63 (3). pp. 1450-1457. ISSN 0278-0046

Full text not available from this repository. (Request a copy)


Multilevel inverters are gaining more attention in ac drive application due to their many attractive features. In the case of conventional neutral-point-clamped (NPC) or flying capacitor multilevel inverter configurations, active switches are connected in series to produce multilevel output voltage waveform. Therefore, if any one switch fails, the entire configuration has to be shut down; this will reduce the reliability of the system. A dual three-level inverter configuration for induction motor drive is proposed in this paper to improve reliability of the system. This topology is developed by feeding four-pole induction motor stator winding with four conventional two-level inverter modules. A level-shifted carrier-based third harmonic injection pulsewidth-modulation technique is used to produce the gating signals for the proposed configuration. By providing proper phase shift between carrier waves, multilevel voltage waveform is produced across the total motor phase winding, and first center band harmonics are also canceled. Thereby, the torque ripple will be considerably reduced compared with conventional NPC five-level inverter-driven induction motor drive. Finite-element analysis (FEA) is used to estimate the torque ripple when induction motor is supplied by the proposed configuration and conventional five-level NPC inverter configuration to show the effectiveness of the proposed converter. The proposed configuration is simulated using MATLAB/Simulink and experimentally verified using a laboratory prototype with a 5-hp four-pole induction motor drive.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Item Type: Article
Uncontrolled Keywords: Multilevel inverter; multi-pole-pair induction motor drive; reliability issues; third harmonic injection pulsewidth modulation (PWM); torque ripple
Subjects: Others > Electricity
Others > Engineering technology
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 18 Mar 2016 04:51
Last Modified: 18 Mar 2016 04:51
URI: http://raiith.iith.ac.in/id/eprint/2244
Publisher URL: http://dx.doi.org/10.1109/TIE.2015.2495281
OA policy: http://www.sherpa.ac.uk/romeo/issn/0278-0046/
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 2244 Statistics for this ePrint Item