Abstract
This paper analyzes the performance of a three-phase converter architecture with a reduced common mode voltage to be used in electric motor drives. Starting from the classical three-phase bridge architecture, two additional switches are inserted in the DC link, in order to decouple the source from the load during the freewheeling intervals. Ad-hoc modulation strategies are introduced and evaluated against the classical three-phase space vector modulation. Three main parameters are analyzed: common mode voltage, efficiency and reliability. Experimental measurements on a converter prototype are used to evaluate the common mode performance. The efficiency in the case of Si-IGBT and SiC-MOSFETs is experimentally evaluated. Reliability analysis performed with a Coffin-Mason model showed that the higher efficiency offered by the SiC devices allows for a marked extension of the lifetime.
| Original language | English |
|---|---|
| Article number | 1922 |
| Journal | Energies |
| Volume | 12 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2019 |
Keywords
- Common-mode voltage
- Electric vehicle
- Leakage current
- Motor drive
- Pulse width modulated inverter
- Pulse-width modulation
- Space vector
ASJC Scopus subject areas
- Control and Optimization
- Energy (miscellaneous)
- Engineering (miscellaneous)
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
- Building and Construction
- Fuel Technology
- Renewable Energy, Sustainability and the Environment
