The nearest three virtual space vector PWM - a modulation for the comprehensive neutral-point balancing in the three-level NPC inverter
- 1 June 2004
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Power Electronics Letters
- Vol. 2 (1), 11-15
- https://doi.org/10.1109/lpel.2004.828445
Abstract
This letter presents a new modulation approach for the complete control of the neutral-point voltage in the three-level three-phase neutral-point-clamped voltage source inverter. The new modulation approach, based on the virtual space vector concept, guarantees the balancing of the neutral-point voltage for any load (linear or nonlinear) over the full range of converter output voltage and for all load power factors, the only requirement being that the addition of the output three-phase currents equals zero. The implementation of the proposed modulation is simple according to the phase duty-ratio expressions presented. These expressions are only dependent on the modulation index and reference vector angle. The performance of this modulation approach and its benefits over other previously proposed solutions are verified experimentally.Keywords
This publication has 11 references indexed in Scilit:
- Optimized space vector switching sequences for multilevel invertersIEEE Transactions on Power Electronics, 2003
- A neutral-point potential balancing algorithm for three-level NPC inverters using analytically injected zero-sequence voltagePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Comparative study of multilevel topologies: NPC, multicell inverter and SMC with IGBTPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Analysis of variation of neutral point potential in neutral-point-clamped voltage source PWM invertersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Neutral point control for multi-level inverters: theory, design and operational limitationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- New feedforward space-vector PWM method to obtain balanced AC output voltages in a three-level neutral-point-clamped converterIEEE Transactions on Industrial Electronics, 2002
- Multilevel inverters: a survey of topologies, controls, and applicationsIEEE Transactions on Industrial Electronics, 2002
- A comprehensive study of neutral-point voltage balancing problem in three-level neutral-point-clamped voltage source PWM invertersIEEE Transactions on Power Electronics, 2000
- PWM Control Method for NPC Inverters with Very Small DC-Link Capacitors.IEEJ Transactions on Industry Applications, 1995
- A New Neutral-Point-Clamped PWM InverterIEEE Transactions on Industry Applications, 1981