1. Voltage Balancing Control of Three-Level Active NPC Converter Using SHE-PWM.
- Author
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Pulikanti, Sridhar R., Dahidah, Mohamed S. A., and Agelidis, Vassilios G.
- Subjects
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ELECTRIC potential , *CASCADE converters , *ELECTRICAL harmonics , *ELECTRONIC modulation , *ELECTRIC switchgear , *PULSE width modulation , *CAPACITORS - Abstract
This paper presents a neutral point voltage control strategy for the three-level active neutral point clamped (ANPC) converter using selective harmonic elimination pulsewidth modulation (SHE-PWM). The control strategy introduces a small change in the switching angles, which varies the duty cycle of the zero-level switching state, controls the neutral point current and, therefore, the neutral point voltage. The decision to vary a given switching angle takes into account the polarity of the output currents and the voltage across the lower dc-link capacitor. The effectiveness of the proposed strategy is verified through extensive simulation studies and experimentally validated using a low power laboratory prototype. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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