Name
Title | ||
|---|---|---|
A novel control method for neutral point clamped inverters with a single Z-source network |
Abstract | ||
|---|---|---|
The Z-source neutral point clamped (NPC) inverters can realize buck-boost energy conversion with all satisfying advantages of the three-level inverters. A significant problem related to this topology is the fluctuation of the neutral-point potential (NP). However, the previous modulation techniques for this topology cannot achieve the considerate stable voltage. In this paper, based on the analysis of the relationship among the shoot-through duty cycle and the NP voltage, the average NP current, switching frequency capacitor value, a new feed-forward compensator by modifying the shoot-through duty cycle which can improve to balance the NP voltage balancing is proposed. Meanwhile, in consideration of a low voltage gain caused by the NP voltage balance method, a new control method based on a maximum constant boost control method is proposed, which brings the benefits in both high voltage gain and low-frequency ripple. The considerate stable NP voltage and the high voltage gain have been proven in simulation and through experimental results from a prototype converter. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/IECON.2014.7048640 | IECON |
Keywords | Field | DocType |
capacitor switching,invertors,power convertors,voltage control,np current,np voltage balancing stability,npc inverters,buck-boost energy conversion,feed-forward compensator,high voltage gain,low-frequency ripple,maximum constant boost control method,modulation techniques,neutral point clamped inverters,neutral-point potential,shoot-through duty cycle,single z-source network,switching frequency capacitor value,three-level inverters,z-source neutral point clamped (npc) inverter,balance the neutral-point potential (np) voltage | Capacitor,Control theory,Duty cycle,Voltage,Control engineering,Modulation,Low voltage,Engineering,Ripple,High voltage,Voltage divider | Conference |
ISSN | Citations | PageRank |
1553-572X | 0 | 0.34 |
References | Authors | |
2 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| xiangyang xing | 1 | 5 | 5.73 |
| alian chen | 2 | 3 | 3.20 |
| weisheng wang | 3 | 15 | 2.16 |
| Chenghui Zhang | 4 | 268 | 38.20 |
| vahid najmi | 5 | 0 | 0.34 |