Abstract
This paper proposes a 3 kW single-phase bi-directional multi-level converter for energy storage applications. The proposed topology is based on the H-bridge structure with four switches connected to the DC-link. A simple phase opposition disposition PWM method that requires only one carrier signal is also suggested. The switching sequence to balance the capacitor voltage is considered. The topology can be extended to a nine-level converter or a three-phase system. The operating principle of the proposed converter is verified through a simulation and an experiment.
Original language | English |
---|---|
Pages (from-to) | 499-506 |
Number of pages | 8 |
Journal | Journal of Power Electronics |
Volume | 14 |
Issue number | 3 |
DOIs | |
State | Published - May 2014 |
Keywords
- Multi-level converter
- Power conditioning system
- PWM strategy
- Renewable energy sources