A Discontinuous PWM Method for Balancing the Neutral Point Voltage in Three-Level Inverter-Fed Variable Frequency Drives

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Author Ben-Brahim, L. en_US
Available date 2009-12-28T07:21:44Z en_US
Publication Date 2008 en_US
Citation Ben-Brahim, L., "A Discontinuous PWM Method for Balancing the Neutral Point Voltage in Three-Level Inverter-Fed Variable Frequency Drives," Energy Conversion, IEEE Transactions on , vol.23, no.4, pp.1057,1063, Dec. 2008 en_US
URI http://dx.doi.org/10.1109/TEC.2008.2001435 en_US
URI http://hdl.handle.net/10576/10511 en_US
Abstract The paper describes a new discontinuous carrier-based pulsewidth modulation (PWM) method for use in variable frequency drives (VFD) driven by three-level inverters. The method introduces three different switching patterns for the full range of operating speeds. Depending on the actual operating speed, the proposed algorithm is developed to select the most suitable PWM switching pattern that improves the VFD performance. This results in low imbalance in the DC-link capacitor voltage, and low current distortions without increasing switching losses. Theory, simulation, and experimental results are presented. en_US
Language en en_US
Publisher IEEE en
Subject Discontinuous pulsewidth modulation en_US
Subject Energy saving; Gate turn-off thyristor (GTO) en_US
Subject Neutral point (NP) voltage en_US
Subject Neutral point clamped (NPC) en_US
Subject Pulsewidth modulation (PWM) en_US
Subject Three-level inverter en_US
Subject Variable frequency drives (VFD) en_US
Title A Discontinuous PWM Method for Balancing the Neutral Point Voltage in Three-Level Inverter-Fed Variable Frequency Drives en_US
Type Article en_US


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