Abstract

This paper reports a resonant snubber for the neutral-point-clamped (NPC) inverter using the auxiliary resonant commutated pole inverter (ARCPI) technique. The proposal guarantees zero-voltage switching of the main switches and zero-current switching of the auxiliary switches without incurring any voltage or current spikes across or through the main switches and without being subjected to any modulation constraints. The operation principle of the ARCPI NPC inverter is illustrated. A simple method dealing with the static overvoltage problem of the inner switches is described. Commutation durations and current stresses in the basic ARCPI circuit are analyzed. The results enable mathematical understanding and practical designing of the basic ARCPI circuit. In particular, the self-balancing quality and controlling possibility of the DC center potential in the basic ARCPI circuit are investigated. The proposal is verified by a 3 kW half-bridge ARCPI NPC inverter laboratory prototype.

Keywords

SnubberInverterCommutationOvervoltageVoltageInductorRLC circuitElectrical engineeringResonant inverterGrid-tie inverterComputer sciencePoint (geometry)Control theory (sociology)Electronic engineeringTopology (electrical circuits)EngineeringCapacitorMathematicsMaximum power point tracking

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Publication Info

Year
2000
Type
article
Volume
36
Issue
2
Pages
586-595
Citations
45
Access
Closed

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Xiaoming Yuan, G. Orglmeister, Ivo Barbi (2000). ARCPI resonant snubber for the neutral-point-clamped inverter. IEEE Transactions on Industry Applications , 36 (2) , 586-595. https://doi.org/10.1109/28.833777

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DOI
10.1109/28.833777