Abstract
A novel single power hybrid asymmetrical multilevel converter (SPHAMC) topology is proposed. By adding an assistant leg to control the neutral-point voltage independently, the presented converter conquers the difficulties of controlling the neutral-point voltage and the sub-converter capacitor voltages in traditional SPHAMCs. The related control strategies are studied in this paper. In order to ensure the stability of the sub-converter capacitor voltages, a PI regulator is employed to control the main converter output voltage. Redundant states selection (RSS) and duty cycle modulation (DCM) methods are implemented to regulate the sub-converter capacitor voltages during each output voltage period. The simulation results as well as experimental ones illustrate the validity and efficiency of the proposed topology and control strategies.
| Original language | English |
|---|---|
| Pages (from-to) | 1477-1485 |
| Number of pages | 9 |
| Journal | International Journal of Applied Electromagnetics and Mechanics |
| Volume | 33 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - 2010 |
Keywords
- Multilevel converter
- control strategy
- hybrid asymmetrical
- single power
- topology
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