Abstract
This paper presents a neutral-point deviation and ripple compensating control method applied to a three-level neutral-point-clamped (NPC) converter. The neutral-point deviation and its harmonic components are analyzed with a focus on the average current flowing through the neutral-point of the dc link. This paper also proposes a control scheme compensating for the neutral-point deviation and dominant harmonic components under generalized unbalanced grid operating conditions. The positive and negative sequence components of the switching functions and ac input currents are employed to accurately explain the behavior of three-level NPC converter. Simulation and experimental results are presented to verify the validity of the proposed method.
| Original language | English |
|---|---|
| Article number | 8737770 |
| Pages (from-to) | 4944-4955 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Industry Applications |
| Volume | 55 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2019.09.1 |
Keywords
- Generalized unbalanced grid operating
- neutral-point current (NPC)
- neutral-point deviation
- positive and negative sequence components
- ripple compensating control algorithm
- three-level neutral-point clampled converter
Quacquarelli Symonds(QS) Subject Topics
- Engineering - Mechanical
- Computer Science & Information Systems
- Engineering - Electrical & Electronic
- Engineering - Petroleum
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