Nowadays, modular multilevel converter (MMC) has become one of the main topics in power electronics for many reasons: low THD, medium to high voltage capability, very high modularity, etc. Though, many low voltage applications could benefit from the modularity and the power quality. Subsequently, the use of such a serial topology at low voltage would require a very small voltage cell for a same number of level which is not practical. An interleaved inverter approach has been developed which allows modular multilevel strategies for low voltage applications. A five-level Packed U-Cell (PUC5) inverter is used to implement the algorithm in addition to Gallium Nitride switches technology. Multilevel voltage waveforms are obtained at the AC point of common coupling (PCC) using a carrier phase shift synchronization between the cells in combination with an interleave inductance. All the control process is decentralized as each cell only requires the grid parameters and the synchronization pulse. Simulation results are presented and experimentation is conducted with two cells in parallel in single phase and standalone mode.
| Date | 24 Apr 2018 |
|---|
| Original language | French |
|---|
| Awarding Institution | - École de technologie supérieure
|
|---|
| Supervisor | Kamal Al-Haddad (Supervisor) & Éric Dubé (Co-supervisor) |
|---|
Labbé, P.-A. (Author),
Al-Haddad (Supervisor) & Dubé (Co-supervisor),
24 Apr 2018Student thesis: Master's thesis › Master in Engineering: Electrical Engineering