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A Five-Level Inverter Scheme with Common-Mode Voltage Elimination by Cascading Conventional Two-Level and Three-Level NPC Inverters for an Induction Motor Drive
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| Author(s) |
MONDAL Gopal; TEKWANI Pragneshkumar; LEVI Emil; K Gopakumar |
| Abstract |
Common-mode voltage generated by the PWM inverter causes shaft voltage, bearing current and ground leakage current in induction motor drive system, resulting in an early motor failure. This paper presents a common-mode elimination scheme for a five-level inverter with reduced power circuit complexity. The proposed scheme is realised by cascading conventional two-level and conventional NPC three-level inverters in conjunction with an open-end winding three-phase induction motor drive and the common-mode voltage (CMV) elimination is achieved by using only switching states that result in zero CMV, for the entire modulation range. |
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| Filename: | 0004-epe2007-full-15045701.pdf |
| Filesize: | 535.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2008-01-11 by System |
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