Abstract
Pulse width modulation (PWM) converters generate switching common-mode voltages (CMVs) across the load terminals. These voltages cause common-mode currents, leading to bearing failure in motor loads and electromagnetic interference problems. This paper presents a generalized carrier-based PWM technique for open-end winding motor drives that completely eliminates switching CMV. The proposed method is applicable to both dual two-level voltage source inverter and dual matrix converter-based open-end winding drives. Detailed analysis shows that the carrier-based method requires significantly less computation compared to the corresponding space vector implementation. This paper also outlines the relationship between the two implementations. The carrier-based method is shown to achieve superior performance in terms of resource requirements and execution time when implemented on a field-programmable gate array-based real-time control platform. Simulation and experimental results have been presented to validate the proposed method.
Original language | English (US) |
---|---|
Article number | 6797924 |
Pages (from-to) | 1471-1487 |
Number of pages | 17 |
Journal | IEEE Transactions on Power Electronics |
Volume | 30 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2015 |
Bibliographical note
Publisher Copyright:© 1986-2012 IEEE.
Keywords
- AC motor drive
- carrier-based modulation
- common-mode voltage (CMV)
- dual two-level inverter
- dualmatrix converter (MC)
- open-end winding drive
- pulse width modulation (PWM)