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http://dx.doi.org/10.5370/JEET.2010.5.2.290

Adaptive Carrier-based PWM for a Four-Switch Three-Phase Inverter under DC-link Voltage Ripple Conditions  

Nguyen, Tuyen D. (Dept. of Electrical Engineering, University of Ulsan)
Lee, Hong-Hee (Dept. of Electrical Engineering, University of Ulsan)
Nguyen, Hoang M. (Dept. of Electrical Engineering, University of Ulsan)
Publication Information
Journal of Electrical Engineering and Technology / v.5, no.2, 2010 , pp. 290-298 More about this Journal
Abstract
This paper proposes an adaptive carrier-based pulse width modulation (PWM) method for a four-switch three-phase (4S3P) inverter under dc-link voltage ripple conditions. The proposed method guarantees balanced output currents despite of the existence of the voltage oscillations across two dc-link capacitors. And also, this new approach achieves a linear over-modulation with calculation time reduction. Simulation and experimental results are given to validate the feasibility of the proposed method.
Keywords
Adaptive carrier-based PWM; Four-switch inverter; Low cost inverter; Over-modulation;
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